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Akor
Celotex PIR Insulation Board 2400mm x 1200mm
From £22.00Unit price /UnavailableIn stock (783 units)
Akor
Ecotherm Eco-Fix Insulation Board 1200mm x 2400mm
From £33.07Unit price /UnavailableIn stock (1800 units)-
Akor
EcoTherm Eco-Versal PIR Rigid Insulation Board (1200mm x 2400mm)
From £18.07Unit price /UnavailableIn stock (6000 units) -
Kingspan
Kingspan Thermaroof TR24 Insulation Board - 1200mm x 600mm
From £18.00Unit price /UnavailableIn stock (400 units) -
Kingspan
Kingspan Thermaroof TR26 Insulation Board - 1200mm x 2400mm
From £41.00Unit price /UnavailableIn stock (598 units) -
Kingspan
Kingspan Thermaroof TR27 1200mm x 1200mm
From £21.00Unit price /UnavailableIn stock (248 units) 
Mannok
Thermal PIR Rigid Insulation Board 1200 x 2400mm
From £19.00Unit price /UnavailableIn stock (5293 units)
Our customers tell it better than we do!
Very easy
Very easy, nice people and great service from start to finish. Kept up to date regarding delivery so very happy indeed. Would definitely recommend, well done
Ultra fast
Ultra fast delivery, technically superlative company, their products are light years ahead of all others. Unbelievable prices. I have been in construction for nearly 70 years now and am still working every day. This company is why I keep getting up in a morning. Thank you dear sirs/ Madam for making life easier
Great Speedy service
Great speedy service. OSB boards arrived 1 week ahead of schedule. Driver asked where he could unload rather than just unload. Would definitely recommend.
The delivery was exceptional
The delivery was exceptional. We were expecting it on 23rd, we got it on 22nd. It was put in the exact spot we needed it to be put.
Competitive Price and Fast Delivery
They were very helpful when choosing the products that I wanted to order and they were fast at delivering. I was particularly impressed that they telephoned us afterwards to ensure the lintel arrived safely which is very unusual.
Grinning like an Armstrong Cheshire Cat
Easy fast ordering on line Delivered exactly as agreed in good condition. And left us all as the title of this review! Thank You
Shop our Different Types of Roof Insulation Boards
Whether you're insulating a pitched or flat roof, or upgrading a conservatory with a solid roof conversion, we offer a range of roof insulation boards to suit your needs and budget. From premium thermal performance to cost-effective solutions, there’s something for every project.
The Celotex PIR Insulation Board is a customer favourite, thanks to its lightweight design, reliable performance, and range of thicknesses to suit various roof spaces or insulation needs. For a more budget-friendly option that still offers excellent thermal efficiency, the EcoTherm Eco-Versal PIR Insulation Board is a versatile choice that delivers consistently great value.
For specialist flat roof projects, EcoTherm Inno-Fix Foil Faced and Kingspan Thermaroof boards deliver professional-grade insulation and top-tier performance where it matters most. With multiple thickness options—plus Kingspan’s tailored solutions for a wide range of flat roof systems—you get the flexibility and efficiency needed to get the job done right.
Smart Protection for Your Home and Pocket – Unlock Roof Insulation Benefits
Built to last and made for easy fitting, our roof insulation boards maintain consistent temperatures by reducing heat transfer through overhead spaces. They lock in warmth during winter and keep interiors cool in the summer—enhancing comfort year-round while cutting energy bills. Engineered for long-term performance, they’re a smart investment in sustainability, efficiency, and lasting savings—whether you're renovating, upgrading, or building from scratch.
Choose Armstrong Cheshire for Smart Roof Insulation Solutions
At Armstrong Cheshire, we provide quality roof insulation boards and building materials with fast, reliable delivery, both locally and nationwide. From our Cheshire roots to expanded service across the UK, we’re committed to competitive prices and getting the basics right.
With express shipping on many products, and same-day dispatch where possible, we keep your building and landscaping projects moving. Need expert advice? Our knowledgeable, friendly team is here to help—and trade customers can save 5% with a trade card discount.
Frequently Asked Questions
Roof insulation boards are used to improve a building's thermal efficiency by reducing heat loss and enhancing comfort. They’re commonly installed in pitched and flat roofs, helping to maintain consistent temperatures, lower energy bills, and improve overall energy efficiency.
Roof insulation boards are rigid, providing high thermal performance with minimal thickness, making them ideal for tight spaces. Insulation rolls are better suited to covering large areas quickly or layering between loft joists, though they may not offer the same level of efficiency.
Roof insulation boards offer excellent thermal performance in a compact, durable form. Ideal for tight spaces like lofts, they reduce heat loss, are easy to install, and provide moisture resistance for long-lasting effectiveness—perfect for roofs, as well as walls and floors.