THERMOCOAT WO INTUMESCENT PAINT FOR STRUCTURAL STEEL AND CAST IRON
Thermoguard Thermocoat 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.
Thermocoat WO is specially formulated for use on structural Hollow Sections as shown below,
Thermocoat WO 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
Thermocoat WO 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. Dry Internal: Apply Thermocoat WO 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 Technical Deptment 01752 690997 or email firstname.lastname@example.org
Thermocoat WO can be topcoated with Flame Retardant gloss, eggshell, WB satin, WB matt BS 4800 & RAL colours
Thermocoat WO is optimised to protect hollow sections and 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.
Available in 20kg, 5kg, 2.5kg
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
- 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
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.
- Maximum Relative Humidity 80%
- Minimum ambient temperature 4°C
- Minimum Steel Temperature 3°C above Dew Point
Thermocoat WO 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
- 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.
Thermoguard issue a Certificate of Supply on request for each specified project for insurance, Fire and Building Control Authority and Client Records.
EU limit for this product (cat A/i) is 140 g/l. This product contains 16 g/lv
Intumescent compounds and resin binders, with high opacity pigments.
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.
Technical Department 01752 690997 or email email@example.com
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.
All materials and specifications are provided in accordance with the T & C’s 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.
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