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Case Study: Leaking HVAC Cooling Tower Repair at Production Facility in USA

A leaking HVAC cooling tower undergoes repair at a production facility in the USA

Chill out, Sylmasta have got this – leaking cooling tower repair restores efficiency to HVAC system

After several failed repair attempts, a leaking HVAC cooling tower at a production facility is sealed within a matter of hours using a combination of Superfast Aqua PW Epoxy Putty and Industrial Metal Rapid 5 Minute Epoxy Paste.

Case Study Data


Site
Production facility
Location
United States
Repair Type
Leak repair
Defect
Leaking cooling tower in HVAC system

Products Used


Superfast Aqua PW Epoxy Putty
Fast working epoxy putty specially formulated for high-strength adhesion to wet and underwater surfaces

Industrial Metal Rapid Epoxy Paste
Epoxy paste with a 60-minute functional cure for quickly rebuilding significant areas of damage

Case Study PDF


Case Study Details


Temperature control at the production facility was provided by a HVAC system. Water which had absorbed heat from inside the building was pumped to a cooling tower located on the roof.

This warmed water was exposed to air inside the tower, leading to heat being rejected into the atmosphere via evaporation. The re-cooled water was then pumped back into the building and the whole process repeated.

After water was seen leaking from the cooling tower, the HVAC system was shut off, and the tower drained and accessed. A long crack was discovered in the floor, with significant amounts of concrete either side having crumbled away.

With the effectiveness of the HVAC system determined by the amount of water cooled, any loss from the tower through leakage was extremely damaging to efficiency.

The manufacturer of the HVAC system admitted they had never seen a fault like this before. Several repair attempts were made using their normal tried-and-tested methods, but these failed before they contacted a Sylmasta distributor for advice.

Because the tower floor was still saturated with water, Superfast Aqua PW Epoxy Putty was used to fill the crack. Superfast Aqua PW is specially formulated for high underwater adhesion.

Whereas other repair compounds might have struggled to form an effective bond, Aqua PW easily adhered to the wet concrete.

After the surface had been prepared via grinding with an abrasive disc, the putty was mixed by hand and forced into the crack. It hardened within 20 minutes, curing to form a solid material which sealed along the entire leak area.

With the leak sealed, attention turned to repairing the significant damage left where the concrete floor had crumbled away, using Industrial Metal Rapid 5 Minute Epoxy Paste.

Industrial Metal Rapid was chosen for its fast 60-minute functional cure time, which would enable the cooling tower to go back into service more quickly than if standard grade Industrial Metal were used.

The epoxy paste was mixed using a putty knife before being used to rebuild the missing floor around the crack. It filled the damaged area with a smooth, metallic-like material offering excellent corrosion resistance to further enhance the sealing power of Aqua PW.

Within three hours of the leaking cooling tower repair starting, the HVAC system was operating at full efficiency again. Impressed by the ease and speed of the repair, the HVAC manufacturer is now using Sylmasta products for a wider range of applications.

If you have an application you would like to enquire about, then please get in touch

Call: +44 (0)1444 831 459
Email: sales@sylmasta.com

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Case Study: Restoration of Clan MacGregor Dalmally Burial Stones Dated 1390-1528

Clan MacGregor Dalmally Burial Stones Restoration featuring a custom coloured Sylmasta AB Original Epoxy Putty

Customised coloured putty restoration puts Clan MacGregor Dalmally Burial Stones back on display for first time in 400 years

Sylmasta manufacture a specialist version of AB Original Epoxy Putty colour-matched to RAL 7037, helping the Clan MacGregor Dalmally Burial Stones go on display inside Glenorchy Parish Church following restoration for the first time in 400 years.

Case Study Data


Site
Church
Location
Scotland
Repair Type
Burial stones restoration
Defect
Pieces missing from base of burial stones

Products Used


Sylmasta AB Original Epoxy Putty
Super-strength epoxy putty which bonds to all materials, filling in and rebuilding large areas of damage

Case Study PDF


Case Study Details


In 1996, the Clan Gregor Society discovered that seven burial stones sunk into the ground in the churchyard of the Glenorchy Parish Church at Dalmally, near Loch Awe, Scotland, belonged to the ancient chiefs of Clan MacGregor.

The stones were originally placed around the high altar of the church to mark the burial spots of clan chiefs. The oldest belonged to John Macgregor of Glenurquay, who was buried on the north side of the High Altar of the original church in 1390. The most modern came from 1528.

Clan MacGregor fell from favour in the early 1600s. The name was banned by King James VI of Scotland following a particularly bloody bout of violence. It was one of his last acts before travelling to London to take up the British crown following the death of Elizabeth I.

The attempted erasure of Clan MacGregor by King James left them with no castle to call their own and the destruction of almost all their historical objects. The Dalmally Stones are therefore one of the few surviving examples of medieval heritage relating to the ancient Clan, whose proscription lasted 170 years.

It is believed the burial stones were removed from the high altar in 1615 when the church was rebuilt as part of The Reformation. They were taken outside and used to cover other grave plots in the churchyard.

By the time the Clan Gregor Society realised their importance, the burial stones had been on the ground for more than 350 years. Erosion, dirt ingress and other forms of damage as the stones sunk over the course of three centuries had left them in desperate need of conservation.

And so the Clan Gregor Society put together an ambitions plan to raise, restore and then return the Dalmally Stones to display inside the church.

It would take another 26 years until 2022 for the society to secure permissions from religious bodies, heritage societies, local and national government, as well as raising enough funds to make the project a reality.

After that time-consuming process was completed, Graciella Ainsworth Sculpture Conservation were commissioned to restore the stones. One challenge came from huge chunks missing from the base of the stones, leaving them unable to stand on display.

Sylmasta formulated a specialist version of AB Original Epoxy Putty colour-matched to RAL 7307, which the team at Graciela Ainsworth believed to be the closest match to the stones after they underwent thorough cleaning during the restoration process.

AB Original was then used to create a flat, bottom edge on each stone, so that they could be placed standing inside the church. 30kg of AB Original was sent to Scotland. The putty was kneaded by hand and then applied to rebuild the bottom of each stone.

The two-hour work time of AB Original allowed for careful, precise application without the threat of premature curing. Once set, AB Original formed a ceramic-like material similar to the original stonework in both texture and colour.

After Graciella Ainsworth had completed their restoration of the Dalmally Stones, they were fixed in place inside the church for the first time in 400 years. A dedication ceremony was held as part of a weeklong Clan Gregor celebration, attended by society members who travelled to Scotland from around the world.

The beautiful carvings of knights and delicate patterns decorating the stones – which are considered fine examples of the Loch Awe School – can now be fully appreciated and are preserved for future generations to admire.

AB Original has since been used by Graciella Ainsworth in similar applications, including creating supporting shoes for a series of display pieces at the New Perth Museum.

Sylmasta’s investment in the latest epoxy putty stick manufacturing technology at their site in the United Kingdom means other colour-customised putties can be quickly and easily made for future conservation and restoration projects depending on client requirements.

If you have an application you would like to enquire about, then please get in touch

Call: +44 (0)1444 831 459
Email: sales@sylmasta.com

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Case Study: Landscaping Materials Company Repair & Protect Warehouse Metal Pallets

Ceramic Brushable Blue Epoxy Coating is used to repair metal pallets damaged by impact, abrasion and wear

Ceramic Brushable Blue helps a landscaping materials supplier lay a path to metal pallets protection

A landscaping materials company use Ceramic Brushable Epoxy Coating to repair and protect metal pallets at their central warehouse left damaged by years of having heavy and abrasive items like driveway paving, garden slabs and natural stones stacked on them.

Case Study Data


Site
Landscaping materials supplier warehouse
Location
United Kingdom
Repair Type
Metal repair and protection
Defect
Metal pallets damaged and worn by storage of abrasive, heavy materials

Products Used


Ceramic Brushable Epoxy Coating
Epoxy coating reinforced with silicon-carbide which protects metal surfaces against wear, abrasion and impact

Case Study PDF


Case Study Details


As one of the biggest suppliers of landscaping materials in the United Kingdom, the company had a vast central warehouse storing items which were then sent to distributors around the country.

These materials included driveway paving, garden slabs, kerbs, edges, porcelain, natural stone and bricks. All were stacked and stored on metal pallets.

The weight of these materials, their abrasive nature and the impact from moving them on and off the metal pallets meant that over time, the metalwork began to show visible signs of wear.

Removing all existing pallets from the warehouse and installing replacements would have been a time-consuming and expensive task.

The landscaping company therefore contacted a mechanical engineering specialist who used and distributed Sylmasta products for advice. They suggested Ceramic Brushable Blue Epoxy Coating to repair the metal pallets in the warehouse.

Ceramic Brushable is reinforced with silicon-carbide for hardness and an ultra-smooth finish. It is painted onto parts and surfaces to create an outer layer with extreme resistance to abrasion, corrosion, chemical attack, cavitation, erosion and pitting.

Ceramic Brushable Blue was painted onto the top parts of the metal pallet which came into contact with landscaping materials

Two coatings of Ceramic Brushable were applied to the top part of the pallets which the landscaping materials sat on. It cured to form a hardened shell, protecting the original metalwork against abrasion and impact damage caused by the materials.

Initially, only a few pallets were treated as a trial run to test the performance of Ceramic Brushable. Six months later and there were no visible signs of damage to any of the coatings applied during the trial.

Metal pallets in a landscaping materials supplier warehouse are coated with Ceramic Brushable Epoxy to repair them after impact and abrasion damage
Once cured, Ceramic Brushable formed a silicon-carbide reinforced layer which was ultra-smooth and offered high resistance against impact and abrasion

Satisfied with the performance of Ceramic Brushable, the landscaping company purchased 10kg to repair and protect more metal pallets throughout the warehouse.

They are also now considering opting for a two-layer wear indicator coating, whereby a topcoat of Ceramic Brushable Green or Black is applied over the existing Blue.

When the Blue layer begins to show through, it will indicate a new topcoat of Green or Black is required to maintain suitable protection levels for the pallet.

Having a clear system showing when to reapply Ceramic Brushable will help the company continually extend the lifespan of its metal pallets for years to come.

If you have an application you would like to enquire about, then please get in touch

Call: +44 (0)1444 831 459
Email: sales@sylmasta.com

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Case Study: Classical Composite Order Column Restoration at Former Cinema Built in 1920s

Concrete classic composite order column repair using Sylmasta AB Original Epoxy Putty

Back to the movies – repair of composite order column tops restores a former cinema facade to its 1920s heyday

Heavily damaged composite order column capitals made from concrete are returned to their highly detailed original state in a Sylmasta AB Original Epoxy Putty repair during the renovation of a neoclassical style former cinema in Portsmouth built during the 1920s.

Case Study Data


Site
1920s neoclassical former cinema
Location
Portsmouth
Repair Type
Concrete restoration
Defect
Heavily damaged classical composite order column capitals

Products Used


Sylmasta AB Original Epoxy Putty Stick
Super-strength epoxy putty which bonds to all materials and can be easily carved and shaped to hold intricate details

Case Study PDF


Case Study Details


Renowned local Portsmouth architect Arthur Edward Cogswell designed the building in neoclassic style. It opened in 1921 as a cinema and remained in use as a picture house through several names changes for 52 years, until 1973.

It reopened as a snooker hall in 1976 and played host to budding local Stephen Hendrys and Ronnie O’Sullivans until the 2000s. More recent uses included a martial arts centre, a lounge bar, a short-lived return to snooker and darts, and a karaoke bar.

The uncertainty over what to do with the inside of the building over the past 20 years was reflected by a lack of maintenance and care for the outside.

By the time the karaoke bar heard its final song, the facade had become an untidy mess of different coloured paints peeling away, damaged concrete and broken windows.

An ambitious project was launched to renovate the building for community use. This included restoring the dilapidated facade as close to its original 1920s state as possible.

The most challenging part of the refurbishment was repairing the tops of four composite order columns – known as capitals – which were in a sorry state. Faded red and blue paint was flaking off. Much of the intricate carved detail had crumbled away and been lost.

With its super strength, long work time and ability to hold shape after being carved, Sylmasta AB Original Epoxy Putty proved the ideal repair material to restore the columns.

The columns were first thoroughly cleaned, including using a blowtorch to burn off any remains of old paint. AB Original was then mixed by hand, after which the installers had around two hours to carve the putty into the original style of A.E. Cogswell and apply it to the column before it set.

Because AB Original sets harder than other epoxy putties, it easily held the highly intricate detail needed to match a classic composite order column. Each sculpted piece of AB Original adhered directly to the concrete, forming a permanent bond.

All four columns were repaired in this way before the entire facade was painted a dignified white. The end result was a seamless restoration of each column. AB Original was so effective, it left no trace that a significant repair and rebuild had taken place.

If A.E. Cogswell came back to life and visited his cinema, even he would have struggled to tell the detailing on the columns was not the original work.

The entire renovation project took around 12 months to complete and included modernising the inside of the building. It now serves the local community, looking almost identical from the outside as it did when first opened as a cinema a century ago.

If you have an application you would like to enquire about, then please get in touch

Call: +44 (0)1444 831 459
Email: sales@sylmasta.com

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Case Study: Corroded 30-Metre Section of Sewer Force Main In Underground Vault Repair

A severely corroded sewer force main pipe in Hawaii undergoes repair and refurbishment using the Sylmasta Pipe Refurbishment System

Say aloha to a sewer force main in Hawaii restored from a corroded state by a repair made using the Sylmasta Pipe Refurbishment System

An engineering company in Hawaii refurbish a severely corroded 30-metre section of 450mm ductile iron sewer force main inside an underground vault, rectifying a previous repair attempt which ended up sandblasting a 75mm round hole in the pipe.

Case Study Data


Site
Sewer force main
Location
Hawaii
Repair Type
Pipe repair and refurbishment
Defect
Severely corroded 450mm ductile iron pipe, including 75mm round hole

Products Used


Industrial Metal Epoxy Paste
Metal-filled epoxy paste used to bridge large holes, rebuild weakened pipes and restore surface profile

Liquid Metal Epoxy Coating
Brush applied coating which cures to a hard wearing, metallic surface for protecting pipes against corrosion

SylWrap Pipe Repair Bandage
Composite repair wrap with water activated resin which sets rock hard to encompass pipes with an impact resistant outer sleeve

Case Study PDF


Case Study Details


The 450mm ductile iron pipe inside the vault was the final section of the sewer force main before it discharged into a manhole housing a gravity collection system. Its operating pressure was around 3 bar.

It was installed in the 1970s. Conditions inside the often-flooded vault over a period of nearly 50 years had led to severe exterior corrosion and a significantly weakened pipe.

A recent attempt to add structural strength and protect against further corrosion involved sandblasting the line prior to coating with epoxy. Unfortunately, the contractor failed to realise just how weakened the ductile iron had become.

Sandblasting to clean the pipe subsequently put a 75mm round hole in the top of the sewer between a flange and the concrete wall where the main entered the adjacent manhole. Wastewater could escape through this hole when the line was pressurised.

To seal the leak in the pipe, the contractors ordered a pipe repair clamp specifically fabricated for the line. But because the surface was so badly deformed by corrosion, it was impossible for the clamp to achieve a watertight seal. There were also concerns that tightening the clamp fully would further breach the brittle metalwork.

The contractors contacted Sylmasta for assistance with the corroded sewer main repair. They needed to improve the surface profile of the pipe to make the clamp effective, before refurbishing the entire 30-metre section inside the vault to keep the line operational and protect against further degrading.

Any repair method had to take into account the weakness of the line and the damage already done by sandblasting. Sylmasta therefore recommended using Stages 2, 3 and 4 of their Pipe Refurbishment System.

The hole was attended to first. Wire mesh was used to bridge the gap. Industrial Metal Epoxy Paste was then applied around the entire diameter of the pipe between the flange and the wall, including over the hole. The wire mesh prevented any epoxy paste entering the pipe.

Sandblasting to clean the pipe during a previous repair attempt left a hole in the pipe, through which water could escape when the sewer main was pressurised

Industrial Metal is a two-part epoxy paste used to rebuild weakened metalwork and improve surface condition of pipes. In this application, 5kg of Industrial Metal filled in all imperfections caused by pitting and increased pipe thickness surrounding the hole.

Once cured, Industrial Metal sealed the hole and rebuilt the pipe, leaving it strong enough to withstand the clamp being fitted and smooth enough to ensure a watertight seal could now be achieved.

Industrial Metal could have held the leak of its own accord. The contractors though decided to take a belt and braces approach by also fitting the clamp, seeing as it had been specifically made for this sewer line.

Attention next turned to refurbishing the rest of the corroded sewer main. Loose material was carefully cleaned off using wire brushes before the sewer main was painted with Liquid Metal Epoxy Coating.

10kg of Liquid Metal was used to apply two coatings across the entire 30-metre pipe, the two flanges at either end and the coupling in the middle. Re-coat time was four hours, meaning the application of Liquid Metal took one day.

Liquid Metal cured to create a new, metallic, hard-wearing pipe exterior for the sewer main, providing a shield against corrosion and a waterproof barrier against future leaks.

The final stage of the repair saw the sewer main given further reinforcement using 20 x SYL866HD SylWrap Pipe Repair Bandage. SylWrap Bandage is a composite repair wrap with a water-activated resin.

It was wrapped and smoothed around the whole pipe, curing within minutes to form a rock-hard, impact resistant layer of further protection. Six layers of SylWrap Bandage were used based on the 3 bar operating pressure of the sewer main.

From sealing the hole to reinforcement with SylWrap Bandage, the repair was completed over the course of one week. The contractors were impressed with how easy all three Sylmasta products were to apply given the cramped, wet and dirty conditions inside the vault.

They had originally planned to encase the sewer main in concrete after refurbishment as an additional means of protection. This was no longer deemed necessary once they saw the strength and effectiveness of the repair.

At a total cost of just under $5000 including delivery to Hawaii, refurbishing the corroded sewer force main provided a significant financial saving compared to ripping out the pipe and replacing it.

If you have an application you would like to enquire about, then please get in touch

Call: +44 (0)1444 831 459
Email: sales@sylmasta.com

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Case Study: Narrowboat Engine Heat Exchanger Manifold Hole Repair With Superfast Titanium

A hole in a narrowboat engine heat exhchanger manifold undergoes repair with Superfast Titanium Epoxy Putty Stick

Cool engine heat exchange repair keeps a narrowboat sailing

A narrowboat owner uses Superfast Titanium Epoxy Putty Stick to make a high temperature repair to a 15mm x 15mm hole which appeared in the engine heat exchanger manifold of the vessel.

Case Study Data


Site
Narrowboat
Location
United Kingdom
Repair Type
Heat exchanger manifold repair
Defect
15mm x 15mm hole

Products Used


Superfast Titanium Epoxy Putty
Epoxy putty resistant to 280°C for making repairs to high temperature systems, equipment and parts

Case Study PDF


Case Study Details


The narrowboat had a raw water system for cooling the engine, including a manifold mounted heat exchanger. It worked by pumping canal water into a tank containing a series of pipes on the exhaust manifold.

Inside these pipes ran engine coolant, circulated around the engine block by another pump. The canal water in the tank passed over the pipes, cooling the engine coolant in the same way a fan does in a car. The water was then expelled through the exhaust.

The narrowboat was moored on a canal in Hertfordshire, around 30 miles north of London, when the owner discovered a 15mm x 15mm hole had appeared in the heat exchanger manifold.

A 15mm x 15mm appeared in the engine heat exchanger manifold

They decided to repair the manifold using Superfast Titanium Epoxy Putty Stick. Superfast Titanium was selected because of its high temperature resistance, enabling it to withstand up to 280°C.

Within 24 hours of the narrowboat owner contacting Sylmasta, Superfast Titanium had been delivered to a collection point close to where the vessel was moored.

Before the repair, the narrowboat owner cleaned and rubbed down the heat exchanger manifold to improve adhesion with the epoxy putty. Aluminium mesh was placed over the hole as a precautionary measure to prevent any epoxy putty entering the manifold exchanger.

Aluminium mesh was placed over the hole as a precautionary measure to prevent any Superfast Titanium entering the manifold exchanger

Enough Superfast Titanium to cover the hole was then cut from the stick and kneaded by hand until it turned a uniform, golden brown colour to indicate successful mixing.

The putty was applied over the mesh and surrounding area. It was pushed firmly onto the manifold to ensure maximum contact before being smoothed off with a little water.

Superfast Titanium Epoxy Putty used to seal a hole as part of a narrowboat engine heat exchanger manifold
The hole was sealed by encompassment with Superfast Titanium

Superfast Titanium has a work time of 90 minutes. It reached working strength in eight hours and achieved a full cure after 72 hours.

The narrowboat engine could have gone back into service after eight hours, but the owner was in no rush to set sail again and so remained moored for the full cure time.

If you have an application you would like to enquire about, then please get in touch

Call: +44 (0)1444 831 459
Email: sales@sylmasta.com

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Case Study: Copper Mine Repair Pump Housing Heavily Damaged By River Water Extraction

A copper mine in Bulgaria repair pump housing left heavily damaged after years of extracting water from a nearby river

Copper mine wear repair – refurbishing and protecting pump housing after river water damage

Pump housing at a copper mine left heavily damaged by many years of extracting river water containing sand, silt and other debris, undergoes repair and refurbishment after the cost of replacement was deemed too expensive.

Case Study Data


Site
Copper mine
Location
Bulgaria
Repair Type
Pump housing repair
Defect
Heavily damaged metalwork

Products Used


Ceramic Brushable Epoxy Coating
Epoxy coating reinforced with silicon carbide which sets to an ultra-smooth finish for sealing and protecting parts and surfaces

WearShield Epoxy Paste
Epoxy paste heavily filled with alumina beads used to create an impact resistant shell to protect metalwork in abrasive environments

Case Study PDF


Case Study Details


The pump housing was part of a system which extracted water from a nearby river and transported it around the copper mine, where it was then used in a number of different processes.

Sand, silt, dirt, stones and other debris were all present in the water as it passed through the pump housing. Following years of exposure to the river water, the housing was now suffering from severe corrosion, abrasion and wear damage.

As it appeared the pump housing was beyond repair, the mine sought quotes for fabrication and installation of a replacement part from several companies. When these were deemed too expensive, it was decided to attempt refurbishment.

The pumping house was heavily damaged after years of extracting water from a river

The mine contacted Sylmasta’s approved supplier in Bulgaria. The supplier had recently spent several days completing a comprehensive product training programme at Sylmasta HQ in the United Kingdom, including a module on restoring damaged metalwork.

They recommended using Ceramic Brushable Epoxy Coating and WearShield Epoxy Paste in conjunction to both repair the existing damage and protect the pump housing from further deterioration.

Ceramic Brushable is a ceramic-filled epoxy coating reinforced with silicon carbide. It seals and protects parts, machinery and surfaces by forming an ultra-smooth, hardened layer of protection.

WearShield is an epoxy paste heavily filled with alumina beads and a high resin content. The dense alumina structure of the cured material enables it to offer the ultimate resistance against all types of impact in the most abrasive environments.

The pump housing was taken apart and thoroughly cleaned to remove as much rust, dirt and grime as possible. An initial coating of Ceramic Brushable Blue was painted all over the metalwork using a brush, sealing the original surface.

Once Ceramic Brushable had cured, WearShield was applied on top with a spreader. The composition of WearShield makes it easy to build significant, dense layers of protection quickly. In this case, WearShield cured to form a 30mm thick alumina-reinforced shell over the pump housing.

Because the alumina beads make cured WearShield a slightly rough material, it was decided to topcoat with more Ceramic Brushable. The ultra-smooth, low-friction finish provided by Ceramic Brushable would improve flow through the pump housing, making it more efficient once it went back into service.

Completing the repair took just two days and saved the mine a substantial amount of money, The pump housing will remain in service for many more years thanks to the significant protection provided by WearShield and Ceramic Brushable.

If you have an application you would like to enquire about, then please get in touch

Call: +44 (0)1444 831 459
Email: sales@sylmasta.com

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Case Study: Rotted Wooden Beam Repair in Home Renovation Project

Rotten wooden beam repair made using Sylmasta AB Original Epoxy Putty during a home renovation in Wales

Home facade is made ready for rendering thanks to a rotten wooden beam repair made with Sylmasta AB Original Epoxy Putty

Sylmasta AB Original Epoxy Putty is used to repair a rotted wooden beam, filling in large voids to help create a flat surface which enabled the outside of a home to be rendered as part of a renovation project.

Case Study Data


Site
Residential home
Location
Wales
Repair Type
Wood repair
Defect
Oak beam heavily rotted

Products Used


Sylmasta AB Original Epoxy Putty Stick
Epoxy putty with a two-hour work time applied to wood for repairing damage and filling in voids caused by rotting

Case Study PDF


Case Study Details


A property owner in Wales was renovating a house they had inherited, including improving its exterior appearance. The facade consisted of an untidy mix of concrete breeze blocks, painted brick and a large oak beam.

The intention was to render the entire wall with cement. Doing so required a flat, sound surface for the cement to be applied to. Unfortunately, the ancient oak was badly rotted in places with large voids which made it impossible to render successfully.

To overcome the problem, the property owner decided to repair the rotted wooden beam using Sylmasta AB Original Epoxy Putty. AB Original was chosen for its super strength, ease of application and two-hour work time, meaning more of the putty could be mixed in one go and carefully applied without needing to rush through fear of premature curing.

30kg of AB Original were delivered to the site. The putty was supplied in 200g sticks, whereby the resin and hardener are pre-measured. This eliminated the need to measure out separate components of Part A and Part B, making application quicker and more straightforward.

Each stick was kneaded by hand until it turned a uniform white colour. Whilst soft, AB Original was pushed into the voids left where the oak had rotted away, easily bonding to the damaged wood. The homeowner was particularly attracted to AB Original because no tools or equipment were needed for the repair.

Where the gaps left by rot were particularly big, the homeowner added hardwood inserts on top of the putty to reduce the amount of AB Original required.

These inserts were pressed directly into the putty whilst it remained soft. A permanent bond was created between the putty and the hardwood once AB Original had cured to its final rock-hard, watertight material.

Home successfully rendered after rotten wooden beam underwent repair with Sylmasta AB Original Epoxy Putty
The repair helped create a smooth exterior facade which was then rendered

For the AB Original which remained exposed, a little water was used to create an ultra-smooth finish as the putty set. The cured material itself could be rendered onto directly, helping to make adding the cement coating a straightforward task.

If you have an application you would like to enquire about, then please get in touch

Call: +44 (0)1444 831 459
Email: sales@sylmasta.com

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Case Study: Reassembly & Repair of Composite Stone Water Fountain Cracked into Pieces

A composite stone water fountained cracked into multiple pieces undergoes repair and reassembly

Water fountain repair cracked – putting the pieces of a favourite garden ornament back together

A tiered composite stone water fountain in a Welsh garden undergoes a DIY repair after winter temperatures caused water left inside the upper bowl of the ornament to freeze, cracking it into multiple pieces.

Case Study Data


Site
Garden
Location
Wales
Repair Type
High-strength bonding and stone repair
Defect
Composite stone water fountain cracked into multiple pieces

Products Used


Sylmasta Rapid 5 Minute Epoxy Adhesive
Epoxy adhesive with a five-minute work time which creates high-strength, permanent bonds between all materials

Sylmasta AB Original Epoxy Putty
Hard-wearing epoxy putty used to fill gaps and replace missing sections of damaged stonework

Case Study PDF


Case Study Details


The water fountain consisted of two tiers and was made from composite stone. When winter temperatures in Wales plummeted below -10°C, the upper bowl cracked into several pieces due to water inside it freezing.

When Spring arrived, the owner of the water fountain decided to try and repair and restore their favourite ornament. Not only did the upper bowl need to be bonded back together, but there were numerous other cracks and missing sections requiring attention.

Sylmasta advised that Rapid 5 Minute Epoxy Adhesive be used first to reassemble the fountain. Rapid 5 Minute creates high-strength, permanent bonds between many materials, including composite stone.

The five-minute cure meanwhile is long enough for parts to be carefully assembled and rearranged if necessary before the adhesive sets, at the same time as requiring minimal holding or clamping.

Rapid 5 Minute comes with the two components that make up an epoxy adhesive – resin and hardener – kept separate. The 25ml cartridge extrudes the parts in equal measures, after which they are mixed together for around 30 seconds with a spatula.

The fountain owner extruded the epoxy onto a piece of cardboard for mixing. The mixed adhesive was then applied using the spatula to one of the surfaces to be bonded, and the pieces pushed together and held in place.

Any overspill of epoxy was thoroughly cleaned off the stonework. Rapid 5 Minute exposed to sunlight can yellow with age, which would have looked unsightly against the pale coloured fountain.

After five minutes, the stonework no longer needed to be held together as Rapid 5 Minute had begun to set. The fountain was left undisturbed for a further 30 minutes, allowing the epoxy adhesive to reach maximum properties.

Once the upper bowl had been reassembled, any remaining cracks and missing sections were filled in using Sylmasta AB Original Epoxy Putty. AB Original is a hard wearing, waterproof, ceramic-filled putty which bonds to all materials.

It offers a two-hour work time, enabling the putty to be mixed, moulded into shape and applied without any worry about premature curing. It is suitable for use in interior or exterior settings and achieves a full cure in 24 hours.

The putty was kneaded by hand until it turned a uniform colour. It was then shaped and formed to replace missing areas of stonework and pushed into cracks. For shallow cracks, the surface of the curing putty was wetted whilst still pliable to create a type of slurry which could be worked further in.

To help disguise larger sections of AB Original, powdered dust from the stonework was pressed into the putty. This took it from its standard off-white and towards the colour of the fountain, helping the repaired areas blend in.

Once the repair was completed, the water fountain retuned to full working order

The owner even discovered that painting yoghurt onto the fountain helped further disguise the repair by encouraging lichen and moss to grow. The distressed touch this added was in keeping with the original stone.

Once the repair and restoration had been completed, the end result was a robust and fully watertight upper bowl. The fountain could go back into use for the summer with any visitors to the garden none the wiser that just a few months earlier, it had been cracked into multiple pieces.

If you have an application you would like to enquire about, then please get in touch

Call: +44 (0)1444 831 459
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Case Study: Seawater Storage Tank Floor Repair at Gas Processing Plant in Saudi Arabia

Sylmasta AB Original Epoxy Putty used to repair cracks in the floor of a seawater storage tank

Corrosion could have floored this seawater storage tank – until a repair involving Sylmasta AB Original Epoxy Putty

The floor of a seawater storage tank at a gas processing plant in Saudi Arabia undergoes repair after gaps appeared between rubber sheeting, leaving the concrete which coated the bottom of the tank unprotected and exposed.

Case Study Data


Site
Gas processing plant
Location
Saudi Arabia
Repair Type
Floor repair
Defect
Gaps between rubber sheeting leaving concrete tank floor exposed

Products Used


Sylmasta AB Original Epoxy Putty
Waterproof, hard-wearing epoxy putty with a longer work time used to permanently fill gaps and cracks

Case Study PDF


Case Study Details


The plant collected gasses produced during the extraction of crude oil – such as propane, butane, methane and ethane – and converted them into a number of different chemicals exported worldwide for industrial and agricultural use.

Seawater was extracted from the Persian Gulf and stored in vast metal tanks for use in cooling and other processes on site. The interior of each tank was concrete coated and then lined with rubber matting for protection against corrosion.

Problems with one tank led to it being drained for inspection. This revealed sections of the rubber matting on the floor of the tank had become loosened, lifted and completely broken apart in some places, leaving the concrete lining exposed.

There was a risk that this exposure could lead to seawater finding a way through the concrete and coming into contact with the metal frame beneath. This would put the tank in danger of serious and irreparable damaged caused by corrosion. All gaps in the rubber sheeting therefore had to be sealed before the tank could go back into service.

The engineering team carrying out the seawater tank repair decided to use Sylmasta AB Original Epoxy Putty for the application. AB Original is ceramic-filled, making it stronger and harder wearing than other epoxy putties. It is fully waterproof, adheres to wet surfaces and its high chemical and corrosion resistance mean it is often used as a sacrificial layer.

AB Original was mixed by hand. Whilst soft enough to shape and manipulate, it was forced into the gaps and cracks between the rubber sheeting and smoothed off with water and a hand tool.

The two hour work time of AB Original allowed large amounts of putty to be mixed and applied without the threat of premature curing. Once hardened, the putty permanently filled every gap with a waterproof material, protecting the concrete lining from seawater exposure.

After the application of AB Original, fibreglass sheets were layered over the rubber matting and coated with an epoxy resin. This created a new reinforced floor surface over the damaged rubber, offering yet another layer between seawater and the metal frame of the tank.

The plant could then put the tank back into operation safe in the knowledge that the metalwork was now far better protected by a combination of concrete, AB Original, rubber matting and an epoxy composite repair.

If you have an application you would like to enquire about, then please get in touch

Call: +44 (0)1444 831 459
Email: sales@sylmasta.com