Improve thermal performance and reduce heat loss with our range of PIR / Floor Insulation, ideal for insulating ground floors, suspended floors and renovation projects. PIR insulation boards are a popular choice for modern builds and upgrades thanks to their high insulation value and slim profile, helping you achieve excellent efficiency without taking up unnecessary space. Whether you’re insulating beneath flooring, between joists, or as part of a new floor build-up, PIR insulation helps create warmer, more comfortable interiors.
PIR floor insulation is commonly used in extensions, refurbishments and new builds, helping reduce drafts and heat loss through floors—one of the most important areas to insulate for overall energy efficiency. It’s ideal for use under concrete floors or between timber joists depending on your project requirements. Correct installation also helps support building performance and can contribute to lower heating costs over time.
For best results, choose the correct thickness for your build, fit boards tightly to reduce gaps, and use suitable membranes or sealing methods where required. Preparing a level base and following recommended installation guidance helps ensure the insulation performs as intended and delivers long-lasting benefits.
Shop online today for PIR and floor insulation with delivery and collection available.
The RECTICEL EUROTHANE® GP 100 mm x 1200 x 2400 PIR Insulation Board is a high-performance rigid insulation solution designed for walls, floors and roofs where low U-values and Part L compliance are required.…
The RECTICEL EUROTHANE® GP 120 mm x 1200 x 2400 PIR Insulation Board is a high-performance rigid insulation solution designed for walls, floors and roofs where maximum thermal efficiency is required.…
The RECTICEL EUROTHANE® GP 150 mm x 1200 x 2400 PIR Insulation Board is a high-performance rigid insulation solution designed for walls, floors and roofs where very high thermal efficiency is required.…
The RECTICEL EUROTHANE® GP 25 mm x 1200 x 2400 PIR Insulation Board is a high-performance rigid insulation solution designed for use in walls, floors and roofs where space is limited but effective thermal performance is required.…
The RECTICEL EUROTHANE® GP 40 mm x 1200 x 2400 PIR Insulation Board is a high-performance rigid insulation solution designed for walls, floors and roofs where efficient thermal performance is required with minimal build-up.…
The RECTICEL EUROTHANE® GP 50 mm x 1200 x 2400 PIR Insulation Board is a high-performance rigid insulation solution designed for use in walls, floors and roofs where efficient thermal performance is required with a relatively slim build-up.…
The RECTICEL EUROTHANE® GP 60 mm x 1200 x 2400 PIR Insulation Board is a high-performance rigid insulation solution designed for walls, floors and roofs where strong thermal performance is required with a relatively slim build-up.…
The RECTICEL EUROTHANE® GP 75 mm x 1200 x 2400 PIR Insulation Board is a high-performance rigid insulation solution designed for walls, floors and roofs where enhanced thermal performance is required.…
The RECTICEL EUROWALL+ 90 mm x 1200 x 460 PIR Insulation Board is a premium full fill cavity wall insulation board with tongue and groove joints on all four sides, designed to achieve low U-values and Part L compliance in standard 100 mm cavities.
Builders merchant depots across Leicestershire and Rutland
Three William Hercock depots in Melton Mowbray, Leicester and Oakham supply trade professionals and DIY customers with building materials, timber and landscaping supplies.
Collect from your nearest yard or have it delivered straight to site with HIAB and Moffett offload.
Trade and publicEvery depot is open to trade professionals and DIY customers
Collect or deliveredCollection from any branch or local delivery
HIAB and MoffettCrane and forklift offload straight to site
Rated up to 4.8★ on GoogleFrom 160+ customer reviews across our three depots
Opening hours
The same at all three depots
Monday – Friday7:30am – 5:00pm
Saturday8:00am – 12:00pm
SundayClosed
Bank holiday hours may differ. Please call your branch to check.
What every depot offers
Whichever branch is closest, you get the same service.
Bulk bags and pallet quantitiesOrder by the bag, the bulk bag or the full pallet.
Fast local delivery with HIAB and MoffettCrane and truck-mounted forklift offload, straight to site.
Trade accounts with credit facilitiesCredit terms and trade pricing. Open a trade account
Expert advice from an experienced teamHelp choosing materials and working out quantities.
Reliable stock availabilityKey product ranges kept in stock at every branch.
Open to trade and publicBuilders, contractors and DIY customers all welcome.
Need help with your project?
Our depot teams can help you choose materials and work out quantities.
