100mm PIR Insulation 2400 x 1200mm
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Product Details
Ranging from 50-150mm thickness, these rigid foam panels (brands like Celotex/Kingspan) offer superior thermal performance (0.022W/mK). The 150mm version achieves exceptional U-values in roofs, while thinner options suit wall cavities. Protective gloves are recommended during cutting to prevent skin irritation
As of August 2026, PriceNailer data confirms that the cheapest price for 100mm PIR Insulation 2400 x 1200mm is £42.76 from Selco across 12 suppliers. Prices have increased by 27.7% over the last 37 months.
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Frequently Asked Questions
What R-value does 100mm PIR insulation provide?
100mm PIR insulation with a thermal conductivity of 0.022W/mK provides an R-value of approximately 4.55 m²K/W. This excellent thermal performance makes it ideal for achieving building regulation requirements in most applications.
How many sheets of 100mm PIR insulation do I need per square metre?
Each 100mm PIR insulation board measuring 2400 x 1200mm covers 2.88 square metres. Therefore, you need approximately 0.35 sheets per square metre of coverage.
Can I cut 100mm PIR insulation boards to size?
Yes, 100mm PIR insulation can be easily cut using a sharp knife or fine-toothed saw. Always wear protective gloves as the foam can cause skin irritation, and ensure clean, straight cuts for proper fitting.
Is 100mm PIR insulation suitable for roof applications?
Absolutely, 100mm PIR insulation is excellent for roof insulation in pitched roofs, flat roofs, and warm roof constructions. Its rigid structure and superior thermal performance make it ideal for achieving required U-values in roof applications.
What's the difference between Celotex and Kingspan 100mm PIR boards?
Both Celotex and Kingspan produce high-quality 100mm PIR insulation with similar thermal performance (0.022W/mK). The main differences are in facing materials, edge details, and pricing, but both meet the same building standards.