Technical articles and engineering insight on insulation and waterproofing
8 articles
Rayston HFO 50 high-density closed-cell spray foam: 48–55 kg/m³, HCFO-1233zd(E), closed cells > 90%, >200 kPa compressive strength, R 8.00 at 200 mm.
Rayston HFO 40 closed-cell spray foam: HFO-blown, 42–47 kg/m³, λ 0.028 W/m·K, closed cells > 90%, μ ≥ 80. Aged R-values to 200 mm and…
Rayston HFO 35 closed-cell spray foam: HFO-blown, 30–40 kg/m³, λ 0.028 W/m·K, closed cells > 90%, μ ≥ 80. Aged R-values, mix ratios and TDS…
Rayston 50W high-density spray foam: water-blown, 48–56 kg/m³, λ 0.030 W/m·K, compressive strength 280, CS(10/Y)200. TDS data and R-value table.
Rayston 40W rigid spray polyurethane foam: water-blown, 38–42 kg/m³, λ 0.031 W/m·K, μ ≥ 70, Euroclass E. Mix ratios, R-values and 30W comparison.
Rayston 30W water-blown rigid spray foam: 28–35 kg/m³, λ 0.031 W/m·K, μ ≥ 60, no HFC/HCFC. Mix ratios, site conditions and R-values from the TDS.
Rayston 8W open-cell spray foam: 95% open cells, 8–10 kg/m³, λ 0.038 W/m·K, 40–44 dB sound insulation, CO₂-blown. Full TDS data and R-value table.
Compare Rayston spray polyurethane foam grades: open-cell 8W, water-blown 30W–50W and closed-cell HFO. Density, lambda and closed-cell data from the TDS.
