Insulation · Drylining · Building boards
Trade-price insulation, delivered to your site
IWD supplies genuine trade-price PIR boards, mineral wool, plasterboard, metal drylining and building boards from Kingspan, Celotex, Recticel, Mannok, Rockwool, URSA and more. Free delivery to England & Wales on insulation & drylining (min order £400 ex VAT).
Shop by application
Popular insulation boards & drylining at trade prices
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Celotex GA4000 PIR Insulation Board 2400 × 1200mm – 75...Celotex GA4000 PIR Insulation Board 2400 × 1200mm – 75...
Regular price £27.62 ex VAT£33.14 inc VATRegular priceUnit price per -
Celotex GA4000 PIR Insulation Board 2400 × 1200mm – 50...Celotex GA4000 PIR Insulation Board 2400 × 1200mm – 50...
Regular price £21.49 ex VAT£25.79 inc VATRegular priceUnit price per -
Celotex GA4000 PIR Insulation Board 2400 × 1200mm – 10...Celotex GA4000 PIR Insulation Board 2400 × 1200mm – 10...
Regular price £34.96 ex VAT£41.95 inc VATRegular priceUnit price per -
Kingspan Kooltherm K103 Phenolic Floorboard 2400 × 120...Kingspan Kooltherm K103 Phenolic Floorboard 2400 × 120...
Regular price £327.53 ex VAT£393.04 inc VATRegular priceUnit price per -
Recticel Eurothane GP PIR Insulation Board 2400 × 1200...Recticel Eurothane GP PIR Insulation Board 2400 × 1200...
Regular price £35.83 ex VAT£43.00 inc VATRegular priceUnit price per -
Kingspan Thermapitch TP10 PIR Insulation Board 2400 × ...Kingspan Thermapitch TP10 PIR Insulation Board 2400 × ...
Regular price £51.66 ex VAT£61.99 inc VATRegular priceUnit price per -
Tapered Edge Plasterboard 2400 × 1200mm – 12.5mm (per sheet)Tapered Edge Plasterboard 2400 × 1200mm – 12.5mm (per sheet)
Regular price £9.16 ex VAT£10.99 inc VATRegular priceUnit price per -
Rockwool RWA45 Acoustic Insulation Slab 1200 × 600mm –...Rockwool RWA45 Acoustic Insulation Slab 1200 × 600mm –...
Regular price £25.18 ex VAT£30.22 inc VATRegular priceUnit price per
Free tool
What thickness of PIR do I need?Use our free U-value calculator
Pick your floor, wall or roof, check it against Building Regulations (Part L) U-value targets and see the thinnest PIR board we stock that meets them.
- Floors, walls and roofs
- New build & renovation targets
- Live prices, ex VAT
Free, no sign-up. Takes about a minute.
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Free delivery on insulation (min order £400 ex VAT)
Insulation: £400 ex VAT minimum, always delivered free. Ceilings only: £35 ex VAT delivery under £350 ex VAT, free from £350 ex VAT. Evolution fixings: £15 flat. England & Wales only.
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Trade pricing
Trade prices on every product, shown ex VAT.
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Genuine manufacturer stock
Branded products from leading manufacturers.
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Expert advice by phone
Call 03330 908479, Monday to Thursday 8am–5pm, Friday 8am–12pm.
Free material calculators
Size your insulation, plasterboard, ceiling or partition and get a full materials list, priced live ex VAT.
- PIR U-value calculatorFind the PIR thickness you need for a floor, wall or roof to meet Part L, then price the boards.Open U-value calculator
- Insulation calculatorEnter your area, pick PIR boards, mineral wool rolls or slabs and get the number of packs with waste, priced live.Open insulation calculator
- Plasterboard & fixings calculatorRoom size to boards, drywall screws, dot-and-dab adhesive, tape and filler or skim plaster, priced live.Open plasterboard calculator
- Suspended ceiling calculatorSet out a 600 x 600 grid for your room and get main tees, cross tees, wall angle, hangers and tiles, priced live.Open suspended ceiling calculator
- MF ceiling calculatorWork out MF7, MF5, MF6A, hangers, board and screws for a suspended plasterboard ceiling.Open MF ceiling calculator
- Drywall partition calculatorWork out studs and track, door openings, boards, screws and acoustic roll for a metal stud partition.Open partition calculator
Shop by category
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PIR Insulation BoardsPIR insulation boards from Kingspan, Recticel and Mannok in 20mm to 160mm,...
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Drylining & Metal FramingEverything for metal stud partitions, MF suspended ceilings and wall linings –...
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Glass Wool InsulationGlass mineral wool insulation from URSA and ODE – loft roll, cavity...
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Rockwool Acoustic InsulationBuy Rockwool insulation online at ex-VAT trade prices. Rockwool stone wool is...
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Thermal Insulated PlasterboardInsulated plasterboard for dry-lining walls and ceilings in one fix – Kingspan...
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Plastering & Building MaterialsPlaster & Building Materials Looking for high-quality plaster and building materials to...
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Sheet MaterialsHardwood Plywood Softwood Ply OSB Magply
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Suspended Ceilings Tiles & GridSuspended ceiling grid, tiles and hanger wire at trade prices, sold by...
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Screed & FlooringScreed fibres help reduce plastic shrinkage cracking. Screed edging strip is fitted...
Genuine stock from leading manufacturers
Shop by brand
Buy Celotex, Kingspan, Recticel, Mannok, Rockwool, British Gypsum and more online at trade-price, with free delivery on insulation orders over £400 to England & Wales.
Shop PIR insulation brands · Shop plasterboard brands · Shop ceiling brands
Why buy from Insulation Warehouse Direct
IWD (Insulation Warehouse Direct) supplies genuine insulation, plasterboard and building boards from leading manufacturers at trade-price. Orders are dispatched direct from UK distributors and delivered to your site in England & Wales by Moffett lorry, with delivery timing dependent on stock and location.
Buying in bulk or pricing a whole project? Call 03330 908479 or email sales@insulationwarehousedirect.co.uk for a quote.
Insulation Warehouse Direct (IWD) at a glance
- 785 products online, priced ex VAT
- 54 brands, including Kingspan, Celotex (now Sopratherm), Recticel, Rockwool and British Gypsum
- England & Wales delivery; free on insulation, plasterboard & drylining orders from £400 ex VAT
- ~30 years of trade experience (Bay Drywall and Insulation Supplies Ltd, Totnes)
- 6 free material calculators and 83 buying guides
Latest guide: MF Ceiling Components Explained: MF5, MF6A, MF7 and MF9 ·
Frequently asked questions
Where do you deliver, and is there a minimum order?
We deliver to England and Wales only (not Scotland, Northern Ireland or the islands). Insulation, plasterboard and drylining: free delivery with a minimum order of £400 ex VAT. Suspended ceilings: minimum order £150 ex VAT, £35 delivery under £350, free from £350. Timber, aggregates and cement: minimum order £250 ex VAT, £25 delivery under £500, free from £500. Delivery information.
Are your prices shown with or without VAT?
Prices on the site are shown ex VAT; VAT at 20% is added at checkout. Product pages also show the price including VAT.
Can I get a trade quote for bulk or project quantities?
Yes. For trade pricing on larger orders or whole projects, call 03330 908479 (Mon–Thu 8am–5pm, Fri 8am–12pm) or email sales@insulationwarehousedirect.co.uk with your list.
Which brands do you stock?
PIR boards from Kingspan insulation boards, Celotex PIR (Sopratherm), Recticel PIR boards and Mannok PIR; mineral wool from Knauf Insulation rolls, URSA glass wool, Isover insulation and Rockwool acoustic slabs; plasterboard from British Gypsum plasterboard, Siniat plasterboard and Knauf; plus Magply boards, Jablite EPS, Jackon XPS and leading suspended ceiling brands.
How do I choose the right insulation thickness?
It depends on where the insulation goes and the U-value you need to meet. Use our PIR U-value calculator to compare thicknesses, the insulation calculator to work out how many boards or rolls you need, and our guide What thickness of PIR insulation do I need? Every product page lists the manufacturer's thermal data.
Who is Insulation Warehouse Direct?
IWD (Insulation Warehouse Direct) is the online store of Bay Drywall and Insulation Supplies Ltd, a Totnes-based team with nearly 30 years of trade experience in insulation and building supplies, delivering across England and Wales. About us.