Materials Market: 100mm Celotex GA4100 PIR Insulation Board


Celotex GA4100 is one of Material Market's top-selling insulation products and one of the most popular PIR insulation boards on the market. It’s a multi-purpose board that can be used for several different applications for domestic and commercial use.

Its versatility and ease to install, makes it an attractive product for both professionals who work in the construction industry and people who want to try their hand at DIY.

The boards are made from polyisocyanurate (PIR) which makes them compact, rigid, and tough. They have an aluminum foil facing either side of the board which reflects heat back into the air. 100mm Celotex has a thermal conductivity of just 0.022 W/mK, which makes it energy efficient and is done with a single-layered board.

There are different thicknesses of PIR and each board is cut into the same dimension, which is 2400mm (2.4m) long and 1200m (1.2m) wide. We sell all thicknesses from the Celotex PIR insulation board range, starting from 20mm to 150mm. 

Material Market also sells EcoTherm Eco-Versal and Reciticel GP Eurothane, which are 2 other brands of PIR insulation, which again range from 20mm to 150mm in thickness. The board dimensions are the same as Celotex.

In addition to PIR insulation, Material Market sell other types of insulation materials, insulation accessories, and general building materials to help complete your project.

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Materials Market

Silverstream House 4th Floor
45 Fitzroy Street

020 7459 4574