008
Glass wool insulation from Byucksan, Korea. The official catalogue states over 85% waste-material (recycled glass) usage. Enerfree grade at λ 0.032 W/mK (Korean energy-code grade 가), standard 0.034–0.037, densities 24–120 kg/m³, hot shrinkage 300–400°C. KS, JIS, eco building material, Korea Eco-Label and non-combustibility certificates reproduced in the catalogue. Lines include Enerfree, Waterfree (water-repellent external), Freemat, G/C board and panel core.
The second Korean glass wool record after KCC Nature — this one puts the waste-material rate (85%+) in its ca…
- Manufacturer
- Byucksan (South Korea)
- Evidence
- Verified (3rd party)
- Feedstock
- Glass/mineral waste
- Checked
- 2026-09-05