GACHMAT Insulated Cool Brick – Modern Heat-Insulating Building Material
1. What Is GACHMAT?
GACHMAT, also known as insulated brick or cool wall board, is a sandwich-structured building material consisting of three layers: two outer layers made of special cement paper and a PU or PIR insulating core. It is specifically designed for wall, ceiling, and floor applications requiring thermal insulation, soundproofing, and fire resistance.
2. Structure & Standard Dimensions
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Structure:
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Outer layers: special cement paper
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Core: PU (Polyurethane) or PIR (Polyisocyanurate)
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Standard sizes:
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1,200 × 2,240 mm or 1,200 × 600 mm
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Thickness: from 20 mm (mini) to 100 mm
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3. Common Variants
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GACHMAT PUR: PU core, used for ceilings, cold storage floors, partition walls
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GACHMAT PIR: PIR core, B2 fire rating, excellent insulation and soundproofing, ideal for residential projects
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GACHMAT ECO: PU core with eco-friendly technology (non-metallic), environmentally safe
4. Detailed Technical Specifications
| Specification | Value |
|---|---|
| Thickness (available) | 20 / 30 / 40 / 50 / 60 / 70 / 80 / 100 mm |
| Cement paper thickness | Not specified – standard cement sheet |
| Core density | ~42 kg/m³ (±2) |
| Thermal conductivity (PU/PIR) | ~0.019–0.023 Kcal/m·h·°C |
| Soundproofing index | ≥27 dB |
| Water absorption rate | ~36.5 g/cm² |
| Fire resistance | Non-flammable, self-extinguishing (PIR rated B2) |
5. Advantages & Limitations
✅ Advantages
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Outstanding thermal insulation: 20 mm panel equals approx. 60 cm of brick wall; helps reduce electricity bills by up to 50%
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Excellent soundproofing: ≥27 dB – suitable for quiet environments
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Water & moisture resistance: closed-cell structure prevents seepage
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Fire resistance: no flame spread, self-extinguishing material
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Lightweight & durable: reduces up to 50% of structural load; easy to transport and install
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Eco-friendly: contains no HCFCs, ozone-friendly
⚠️ Limitations
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Lower load-bearing capacity: can crack under frequent heavy pressure
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Surface acoustic performance is limited: not ideal for specialized acoustic applications
6. Applications in Construction
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Wall cladding (indoor & outdoor), partitions in houses, offices, karaoke rooms, studios
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Ceiling insulation, false ceilings, raised flooring in cold storage or tech rooms
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Cold storage floors, freezing room insulation for food preservation
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Suitable for both residential and industrial buildings requiring thermal and sound insulation