THERMOCOAT WI INTUMESCENT PAINT FOR STRUCTURAL STEEL AND CAST IRON
Thermoguard Thermocoat WI 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.
This intumescent paint is specially formulated for use on structural Universal Beams and Columns, Channels, T-sections, Angles etc,
Thermocoat WI 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, or 90 minutes protection: contact us for further advice specific to your project
Key Benefits of Thermocoat WI Steel Paint:
Thermocoat WI 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.
It can be used internally and externally as follows:
- In dry internal environments: Apply Thermocoat WI in accordance with Thermoguard film thickness schedule to achieve 30, 60, 90 minutes.
- Visible or occasional modest damp internal areas: Also apply 1 good coat Thermoguard Flame Retardant Paint
- Wet or External Under Cover: Apply 2nd coat Flame Retardant paint
- Full External Exposure: Contact our technical department on 01752 690997 or email [email protected]
Thermocoat WI can be topcoated with Flame Retardant gloss, eggshell, WB satin, WB matt BS 4800 & RAL colours
Intended Use:
Thermocoat WI is optimised to protect I, channel, shaped steel and hollow bracing. It is a water-based intumescent paint system providing fire resistance to structural steel and cast iron of up to 90 minutes with a minimum number of coats. A compatible decorative overcoat system ensures the system will enhance the building’s architectural and design features.
How it works:
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.
Pack Sizes:
Available in 20kg, 5kg, 2.5kg
Coverage:
Prior to application the contractor should contact Thermoguard’s Technical Department and obtain a basecoat application schedule or follow on can guidance. Do not overspread as this will compromise the system and result in non-compliance and a failure to be certified
Drying Times:
- Brush/roller application Surface dry: minimum 2 hours
- Recoat: minimum 4 hours
- Overcoating with Flame Retardant finish: minimum 10 hours
- Spray Application Surface Dry: minimum 4 hours
- Recoat: minimum 10 hours
- Overcoating with Flame Retardant finish: minimum 48 hours
Preparation:
Steel and cast iron should be free from rust and millscale and primed with Thermoguard Steel Fire Paint Primer to 75 microns DFT ( or alternative good quality anti-corrosive primer compatible with intumescent paints) in accordance with manufacturer’s instructions. Treat galvanised surfaces with “T” wash/Mordant solution & prime with zinc phosphate or other primer for steel.
Application Conditions:
- Maximum Relative Humidity 80%
- Minimum ambient temperature 4°C
- Minimum Steel Temperature 3°C above Dew Point
Application:
Thermocoat WI 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 our 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
Spray:
- Spray Equipment- 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 319, 321, 419, 421
- Care should be taken to clean filters regularly. Cleaning should be undertaken with water.
Fire Certification:
Thermoguard issue a Certificate of Supply on request for each specified project for insurance, Fire and Building Control Authority and Client Records.
Please contact us to obtain this after applying the product.
VOC Content:
EU limit for this product (cat A/i) is 140 g/l. This product contains 16 g/lv
Composition:
Intumescent compounds and resin binders, with high opacity pigments.
Test Data:
Product performance assessment is based upon UKAS/ EGOLF Fire Test Laboratory
Certification to BS 476 Part 21 – Fire Resistance to load bearing elements of structures.
Health And Safety:
Please refer to the relevant Safety Data Sheet for full details of this product.
Apply all products in accordance with BS 6150:2019- Code of practice for painting of buildings.
Do not store this product in cold temperatures below 5°C or above 30°C.
Store in a dry secure place away from children or animals. Dispose of in accordance with local authority waste disposal measures.
Do not pour into drains or watercourses.
For technical advice, please call our technical department on 01752 690997 or email [email protected]
All materials and specifications are provided in accordance with the ts & cs of Thermoguard
IMPORTANT INFORMATION ON PURCHASING OF PASSIVE FIRE PROTECTION PRODUCTS NOTICE:
The information displayed about the products on this website is to be used for guidance ONLY. We advise that all customers contact our technical department to obtain a free no obligation specification and quotation before purchasing goods directly from the website.
Products purchased directly from our website without specification will NOT qualify for certification.
Please be aware that any negligence caused by failure to obtain the relevant advice, or availment of our specification and estimation service, will absolve International Passive Fire Ltd from any liability should Passive Fire Protection Products prepared, or used, by the purchaser, or any other parties, result in damage to property or human life, or for any monetary costs incurred due to incorrect usage.