Wood Structural Panel R-Values

Insulation R-Value Chart - The Home Depot R-value measures how well certain building insulation materials can resist heat. The higher the R-value, the greater the insulation performance. When determining how much insulation you need, don't guesstimate, calculate. Know exactly how much you need with our project calculators. 25mm Celotex TB4025 PIR Insulation Board | Universal PIR Celotex TB4025 is targeted at cut-to-fit applications between rafters or joists and enables users to achieve lower U-values with a single layer of insulation than has previously been possible. It is also appropriate for use in floors and walls. With low emissivity foil facings, TB4025 is manufactured from rigid polyisocyanurate (PIR) using a blend of blowing agents that have zero ozone

Kingspan Kooltherm K108 Cavity Board is a premium performance insulation with a fibre-free rigid thermoset phenolic core. As part of our Kooltherm K100 range, it provides a level of performance that is unrivalled in the world of rigid thermoset insulation materials with a thermal conductivity of just 0.018 W/m·K across all thicknesses.

Using 50mm polystyrene instead of 50mm Celotex for

Polyisocyanurate, also referred to as PIR, polyiso, or ISO, is a thermoset plastic typically produced as a foam and used as rigid thermal insulation. The starting materials are similar to those used in polyurethane (PUR) except that the proportion of methylene diphenyl diisocyanate (MDI) is higher and a polyester-derived polyol is used in the reaction instead of a polyether polyol.

35mm Celotex tuff-R CW3035 100 Block K value of 0.11 or lower, e.g. Thermalite Turbo 13 Dense Plaster 105 Brick 95 45mm Celotex tuff-R CW3045 100 Block K value of 0.19 or lower, e.g. Durox Superbloc 13 Light weight Plaster 105 Brick 50 Clear cavity 100 Block K value … Amazon.co.uk: celotex insulation boards 2400 x 1200 x 50mm Celotex GA4050 / Kingspan TP10 / TF70 / Ecotherm Ecoversal Foil Insulation **MINIMUM ORDER 12 SHEETS FOR DELIVERY** PRICE IS PER SHEET** 5.0 out of 5 stars 2 £44.75 £ 44 . 75 £44.99 £44.99