Trusted UK Supplier
Celotex
Celotex PIR Insulation Board - 2400mm x 1200mm - (TB4000, GA4000, & XR4000)
Rockwool
Rockwool RWA45 Slab - 1200mm x 600mm - All Thicknesses
Kingspan
Kingspan Kooltherm K106 Cavity Board - 1200mm x 450mm - All Thicknesses
Knauf
Knauf Acoustic Partition Roll (APR) - 600mm Width - All Thicknesses
Celotex
Celotex Insulated Plasterboard (PL4000) - 2400mm x 1200mm - All Thicknesses
General Purpose
Moisture Resistant Plasterboard - 2400mm x 1200mm - All Thicknesses
General Purpose
Fire Resistant Plasterboard - 2400mm x 1200mm - All Thicknesses
General Purpose
Sound Acoustic Plasterboard - 1200mm x 2400mm - All Thicknesses
General Purpose
Plasterboard Tapered Edge - All Thicknesses
Soprema
Soprema Sopratherm PL4000 Insulated Plasterboard - 1200mm x 2400mm
Supplying insulation for all types of homes and businesses across the UK!
From DIY to Large-Scale Projects
National Insulation Supplies offer an extensive selection of insulation products from leading manufacturers like Celotex, Kingspan, Knauf, Rockwool, and Recticel and much more.
Explore our diverse range of products tailored for various applications, including floor insulation, wall insulation, roof insulation and cavity wall insulation.
Our loft insulation options include a variety of premium products, such as loft roll designed to enhance energy efficiency in your building and even loft boards.
We also provide specialised products such as fire protection insulation, acoustic insulation, and eco-friendly solutions. Whether you need insulated plasterboard, building membranes, or fire-stopping insulation.
Learn how to choose the best fire resistant sealant for your project. Compare silicone vs acrylic firestop sealants, key applications, fire ratings, and top Nullifire products available from National Insulation...
Isover has announced Environmental Product Declarations (EPDs) across its full range of UK-manufactured insulation products, helping contractors, architects and specifiers make more sustainable and informed building decisions.
Breather membranes and vapour barriers both help manage moisture in buildings, but they do very different jobs. A breather membrane allows water vapour to escape while helping protect the structure...
Looking for the best Celotex floor insulation boards? This guide covers the most popular PIR insulation products used by UK trades, including GA4000 and TB4000, with expert advice on choosing...
Cavity wall insulation remains one of the most effective ways to reduce heat loss and lower energy bills in UK homes, but is it still worth the investment in 2026?...
Trying to decide between loft insulation and spray foam? This guide compares costs, performance, and pros and cons for UK homes, helping you choose the most effective and cost-efficient option...
Learn what loft insulation is, how it works, types available in the UK, and how it reduces heat loss. A complete beginner-friendly guide with FAQs.
Noise control is essential in modern buildings, whether for privacy, comfort, or compliance. Yet one of the most overlooked areas in acoustic design lies above the ceiling
