ThermaCote® - Applying It To Surfaces

Preparing Your Walls

1. Surface Inspection & Cleaning
   • Remove loose paint, plaster, or render until you reach a sound surface.
   • Treat any fungal or mould‐infected patches with a biocide wash (if needed).
   • Fill cracks wider than 1 mm with a compatible filler (e.g., cementitious or acrylic filler).
   • Ensure: Wall is dry (≤ 16 % moisture content) and dust-free.
2. Masking & Protection
   • Cover windows, door frames, skirting boards, and light fittings with painter’s tape and drop sheets.
   • Protect plants and garden features from overspray if working on external elevations.
3. Priming (Base Coat)
   • Stir Base Coat thoroughly; avoid introducing air.
   • Use a high-density foam roller or airless spray (0.021″–0.023″ tip, 1,500–2,000 psi) to apply a uniform 0.5 mm film.
   • Allow Base Coat to dry for 2–4 hours (temperature dependent).

Applying ThermaCote®

1. Mixing TheramCote®
   • Stir the product with 500ml of water until the consistency changes and the ceramic spheres remain evenly suspended.
   • If tinting is required, add approved ThermaCote pigment and remix thoroughly.
2. First Coat Pass
   • Apply the first 0.5 mm layer of Thermacote® exactly like the Base Coat.
   • Maintain wet edge to avoid lap marks.
   • Dry time: 2- 4 hours (cooler UK weather may lengthen).
3. Optional Second Top Coat
   • In high‐heat‐loss zones or heat-loss perimeter, a second 0.5 mm Top Coat pass can further improve emissivity and R-value.
   • Total coating thickness: 1.0 mm.
   • We always check coverage with end-of‐day measurements (at least 500 µm thickness is needed for rated performance).
4. Curing
   • Avoid washing or painting over the coating for the first 24 hours.
   • Full thermal performance is achieved within 48 hours once ceramic microspheres have fused to the substrate.

Note: If you’re unsure which tools we use, see How It Really Works for guidance on why spray yields the most consistent microsphere orientation.