Description
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 of up to 90 mins with a minimum number of coats. A compatible decorative overcoat system ensures the system will enhance the building’s architectural and design features.
Thermoguard Thermocoat WI is optimised for Universal Beams, Columns and other open section steel:
For protection to exterior environment steels,please refer to Thermoguard Thermocoat S.
It is designed for use on larger projects, where our technical team can advise the exact amount of Thermocoat required, keeping costs down and making application easier.
Thermocoat WI is a low odour, water-based coating, making it user and environmentally friendly. Thermoguard Flame Retardant Topcoats are 2010 compliant and safe to use in accordance with manufacturer’s instructions.
We’re here to help! So please speak to our dedicated technical team who will be able to assist you with specification guidance through to purchase.
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 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:
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.
