Thermoguard Thermocoat WO for steel (hollow sections)
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Thermocoat WI & WO is a water-based intumescent paint system providing fire resistance to structural steel and cast iron that may be applied by brush, roller or airless spray.
A compatible decorative overcoat system ensures the system will enhance the building’s architectural and design features.
Thermoguard Thermocoat W is a low-odour, water-based coating, making it user and environmentally friendly.
The range of topcoats are either water-based or 2010 compliant and safe to use in accordance with manufacturer’s instructions.
- Water based Intumescent for structural steel
- For 30 mins protection: 1 thick coat – 2.5kg 4 linear m, 5kg 8 linear m, 20kg 32 linear m – if in any doubt please contact us.
- For 60, 90 or 120 minutes protection: contact us for further advice specific to your project
AVAILABLE IN:
2.5kg, 5kg & 20kg packs
How intumescent coatings work
The heat of a fire triggers a catalytic reaction, causing the expansion of an insulating char layer up to 50 times the paint thickness. This layer keeps the steel below its critical temperature, thus maintaining the structural integrity of the building.
Optimised for CHS, SHS and RHS hollow sections
See Thermoguard Thermocoat WI Ultimate for Universal Beams, Columns and other open section steel
See Data Sheets available on request
Intended use
Thermoguard Thermocoat is a water-based intumescent paint system which gives up to two hours of fire resistance to structural steel and cast iron with a minimum number of coats. A compatible decorative overcoat ensures the system will enhance the building’s architectural and design features.
- For 30 mins protection: 1 thick coat – 2.5kg 4 linear m, 5kg 8 linear m, 20kg 32 linear m – if in any doubt please contact us.
- For 60, 90 or 120 minutes protection: contact us for further advice specific to your project
How Thermoguard Thermocoat works
The heat of a fire triggers a catalytic reaction in the Thermoguard Thermocoat which expands an insulating char layer up to 50 times the paint thickness. This layer keeps the steel below its critical temperature, thereby maintaining the structural integrity of the building.
Fire testing
Product performance assessment is based on UKAS/ NAMAS Fire Test Laboratory Certification to BS 476 Part 21 – fire resistance to load bearing elements of structures.
Fire certification
Thermoguard issues a Certificate of Supply on request for each specified project for insurance, fire and building control authority and client records.
Preparation and pretreatment
Steel and cast iron should be free from rust and millscale and primed with Thermoguard High Build Metal Primer to 75 microns DFT (or alternative good quality anti-corrosive primer compatible with intumescent paints) in accordance with manufacturer’s instructions.
Galvanised steel should be degreased with a suitable etch primer like this Manor 1 pack etch primer.
Thermoguard High Build Metal Primer may be left without further overcoating, or decorated with appropriate conventional paint where no fire resistance is required.
Availability
Thermoguard Thermocoat is available in 20kg, 5kg and 2.5kg containers. Thermoguard flame retardant finishes are available in 2.5L and 5L sizes in a wide choice of colours and finishes.
Technical Advisory and Estimating Service
Thermoguard's in-house estimators provide realistic, confidential guidance on project costings to contractors and quantity surveyors. They also provided expert advice and assistance with all aspects of specification and application.
In the first instance call Tools-paint.com on 01753 684084 or email info@tools-paint.com.
Quality assurance
Thermoguard is ISO 9000 Registered. All products are manufactured and supplied under ISO 9000.
To specify simply state
Apply Thermoguard Thermocoat to achieve...
Fire resistance in accordance with the instructions provided by Thermoguard's Technical Department.
When steel is visible or subject to variable or damp atmospheric conditions, apply 1 coat of Thermoguard Flame Retardant Paint (available in Gloss, Eggshell or Matt finishes).
Application
Thermoguard Thermocoat W may be applied by brush, roller or airless spray. To achieve the best finish in the shortest time, spray application is recommended. Prior to application the contractor should contact Thermoguard's Technical Department and obtain a basecoat application schedule.
To assist correct application in accordance with this schedule, a wet film gauge will be supplied with the order. Further wet film gauges will be provided on request.
- Maximum wet film thickness per brush coat – 800 microns
- Maximum wet film thickness per spray coat – 1400 microns
Brush/roller application
- Surface dry: minimum 2 hours
- Recoat: minimum 4 hours
- Overcoating with Flame Retardant finish: minimum 10 hours
- Surface Dry: minimum 4 hours
- Recoat: minimum 10 hours
- Overcoating with Flame Retardant finish: minimum 48 hours
Airless spray pump: use equipment recommended by manufacturer for the application of high viscosity intumescent paints.
Filter size: 30 mesh; 10mm hose 3/8” diameter with no whip end.
Tip size: 327-329 for narrow surfaces (6” fan); 427-429 for broad surfaces (8” fan)
Care should be taken to clean filters regularly. Cleaning should be undertaken with water.
Composition
Intumescent compounds and resin binders, with high opacity pigments.
Application conditions
- Maximum relative humidity: 80%
- Minimum ambient temperature: 4°C
- Minimum steel temperature: 3°C above dew point
Environmental, health & safety
Thermoguard Thermocoat W is a low-odour, water-based coating, making it user and environmentally friendly. The range of topcoats are either water-based or 2010 compliant and safe to use in accordance with manufacturer’s instructions.
Call 01753 684084 or email info@tools-paint.com for more advice.
