Elevate the thermal performance of your space with Celotex insulation. Manufactured from polyisocyanurate (PIR) foam, these insulation boards deliver low thermal conductivity values of around 0.021 W/mK for high efficiency. You can achieve an insulation of up to R-7.5 per inch. Celotex insulation board severely restrict heat flow through a variety of building envelopes like a wall, roof or floor. This enables warmer interiors in the winter months. Summer months also remain comfortable indoors without heavy reliance on air conditioning. By upgrading your insulation with Celotex, spaces run very energy efficiently all year round. Installation flexibility is unmatched too due to the insulation's durable composition and shear resistance between layers. Celotex is usable across wall types and under various exterior cladding or render finishes.