As part of a holistic approach to upgrading, you will also want to consider building fabric, airtightness and controlled ventilation along with improvements in thermal performance. ForCelotex PL4000, the composite facing on the insulation board, behind the plasterboard layer, can form part of the ...
Celotex CW4000 is an easy to install polyisocyanurate (PIR) insulation board with excellent thermal performance, featuring a low emissivity foil facing. Available in thicknesses from 40mm to 100mm, it is suitable for use in partial fill cavity wall applications ...
Insulation products Product NameThickness RangeSizesLambda Celotex XR4000 110-200mm Width 1200mm, Length 2400mm 0.022 Celotex GA4000 50-100mm Width 1200mm, Length 2400mm 0.022 Celotex TB4000 20-40mm Width 1200mm, Length 2400mm 0.022 Members' Area Register to gain access to our comprehensive tec...
A rigid polyisocyanurate (PIR) board can be installed between the joists (Celotex GA4000 and XR4000 can be considered) provided the insulation is cut accurately and fitted carefully to avoid air gaps. Thinner polyisocyanurate (PIR) foam insulation boards, such as Celotex TB4000, can be considered...