Thermocoat WI - Water-based Intumescent Paint System
Verified by manufacturer 2 months ago
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.
Application
Optimized 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.
Description
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.
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.
Features and benefits:
- Minimum 30 minutes fire resistance subject to manufacturer's guidelines.
- Low-odour, water-based coating, making it user and environmentally friendly.
- Can be top coated with flame-retardant gloss, eggshell, water-based satin or water-based matt (BS 4800 & RAL colours).
- The range of topcoats are either water-based or 2010 compliant and safe to use in accordance with manufacturer’s instructions.
- Thermoguard issue a Certificate of Supply on request for each specified project for insurance, Fire and Building Control Authority and Client Records.
Application:
- Dry internal: Apply in accordance with Thermoguard film thickness schedule to achieve 30, 60, 90 minutes.
- Visible or occasional modest damp internal areas: Also apply one good coat of Thermoguard Flame Retardant Paint.
- Wet or external under cover: Apply second coat of flame-retardant paint
- Full external exposure: Contact manufacturer's technical deptartment.
General information
Color | White |
Finish | Smooth |
Material | Water-based |
Shape | Formless |
Uniclass | |
CAWS | G10/650 Site painting G10/643 Protective painting M61/250 Sprayed coating application on site M61/140 On-site overcoating to existing steel M61/120 On-site coating to existing steel M61/115 On-site coating to galvanized steel M61/110 On-site coating to primed steel |
Specification data - Intumescent protective coatings
Composition | Water-based.Guidance for specification option: Intumescent compounds and resin binders, with high opacity pigments. |
Colour | White. |
Coverage | Prior to application the contractor should contact Thermoguard’s Technical Department and obtain a basecoat application schedule or follow on-can guidance. Manufacturer guidanceDo not overspread as this will compromise the system and result in non-compliance and a failure to be certified. |
Preparation | Steel and cast iron should be free from rust and millscale and primed (see below) in accordance with manufacturer’s instructions. |
Primer | Thermoguard Steel Fire Paint Primer. Guidance for specification option: To 75 µm DFT. Other. Guidance for specification option: Steel and cast iron: Alternative good quality anti-corrosive primer compatible with intumescent paints. Treat galvanised surfaces with “T” wash/ mordant solution and prime with zinc phosphate or other primer for steel. |
VOC content | 16 g/L. |
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