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KL-018
PUTTYFLEX FIREPROOF
Fireproofing & Thermal Insulation
Fully lab-tested
Single-component, water-based elastomeric high-build putty for leveling and fire-protecting flat interior surfaces. At a 2mm (2000 micron) target thickness it forms a high-efficiency thermal barrier that prevents heat transfer to concrete, masonry, gypsum or wood substrates, and bridges surface hairline cracks with exceptional substrate adhesion.
Key specifications
- Color: White/off-white (ISO 7390)
- Density: 1.25 ± 0.05 g/cm³
- Dry residue: 68% ± 2%
- Target DFT: 2.0mm / 2000 microns
- Consumption: 2.0 kg/m² at 2mm
- Fire resistance class: 120-180 minutes (600-800°C), ASTM E119 / BS 476 Pt 20/21
- Reduces a 600°C flame to under 100°C on wood, or under 200°C on steel
- Adhesion: >= 2.4 MPa, Class B5
- Elongation at break: >= 600% (ASTM D412)
- VOC: < 10 g/L
- Dry-to-dust: 60-90 minutes; full dry: 24h; full cure: 48-72h
- Application: primer first (KC Sealer or diluted NAN-VE Rubber), then putty knife/steel trowel/spray in two passes to 2mm / 2 kg/m²; after 48-72h cure it is sandable and topcoatable without losing fire performance
- Packaging: 15 kg or 5 kg pails, 12-month shelf life