Insulation4less
Insulation materials and building supplies for trade and DIY
Last updated on 14th September 2026
About Insulation4less
Insulation4less supplies insulation and building materials to tradespeople and DIY customers across the UK, stocking everything needed to insulate a floor, wall or roof in one order. The London-based online merchant, part of the i4l Group, ships from within the UK on weekday deliveries, most of it on 26 tonne lorries.
The range runs from plasterboard and insulated plasterboard through to PIR insulation boards, loft insulation board, building membranes, acoustic insulation, insulated roofing sheets and roof windows. Stock comes from established manufacturers including Kingspan, Celotex, Rockwool, Knauf, Recticel and Isover, alongside smaller specialist names such as Ecotherm, Steico, Warmline and Sheepwool. Products are organised by application, so a customer working on a suspended floor, a stud wall or a pitched roof can shop by that job rather than by brand.
Johnpaul Manning founded the company after finding it difficult, as a construction professional, to source suitable materials at affordable prices elsewhere. The business sells online only, without a showroom, and operates a trade account facility alongside standard retail checkout for smaller orders and one-off DIY purchases.
What Insulation4less sells
- Plasterboard
- Insulated Plasterboard
- PIR Insulation
- Loft Insulation Board
- Building Membranes
- Acoustic Insulation
- Insulated Roofing Sheets
- Roof Windows
Highlights from Insulation4less
Celotex GA4000 General Purpose PIR Insulation Board
A rigid polyisocyanurate board with low-emissivity foil facings, used across floors, walls and roofs where high thermal performance is needed from minimal thickness.
Kingspan Kooltherm K118 Insulated Plasterboard
A phenolic-cored insulated plasterboard with a low-emissivity foil backing that combines wall insulation and a plaster-ready surface in a single 2.4m x 1.2m board.
Celotex PL4000 Insulated Plasterboard
Rigid PIR insulation bonded to a tapered-edge plasterboard facing for one-step wall and roof lining.
Insulation4less delivery, returns and shipping
- Delivery
- Majority of orders dispatched and delivered within 5 working days; pallet products 7-10 working days
- Returns
- Cancel within 14 days of receiving the merchandise
- Ships to
- UK mainland; not to Northern Ireland, Republic of Ireland, or Scottish postcodes HS or ZE
- Based in
- United Kingdom
Questions about Insulation4less
What sizes does the Celotex GA4000 PIR board come in?
The Celotex GA4000 General Purpose PIR Insulation Board is sold in multiple size options based on a standard 2.4m x 1.2m sheet. It is a general purpose PIR board suited to a range of building insulation applications.
Is the Knauf Loft Roll suitable for combi-cutting?
The Knauf Loft Roll 44 Combi-Cut is designed for loft insulation and is offered in a range of sizes. It forms part of Knauf's mineral wool loft roll range stocked by Insulation4less.
What is Rockwool RWA45 used for?
Rockwool RWA45 is a mineral wool product available in a range of sizes and is commonly used for thermal and sound insulation. It is easy to cut and install according to the brand's own description.
How long does Insulation4less delivery take?
Most orders are dispatched and delivered within five working days, though specialised products such as those sold by the pallet can take seven to ten working days. If any delays occur outside these standard lead times, Insulation4less will notify the customer as soon as possible.
How do I return an Insulation4less order?
Customers must contact returns@i4lgroup.co.uk with their order number and reason for return, then pack items carefully as the cost of any damage to returned goods will be deducted from the refund. Except when goods are faulty or damaged, the customer carries the cost of restocking and may face a collection charge.
Can I cancel my Insulation4less order after placing it?
Orders can be cancelled within 14 days of receiving the merchandise, provided items are returned unopened and unused, but cancelling more than two hours after placing the order may incur a cancellation fee because orders are processed quickly. If the order has already been dispatched, a fee may apply even if it never reached its destination.
What happens if my Insulation4less delivery arrives damaged?
Damaged goods must be reported by email no later than 24 hours after delivery, and any issues should also be marked on the delivery slip at the time. Failing to do this may mean the damaged goods cannot be exchanged for replacements.
Does Insulation4less ship to Scotland and Wales?
Some areas of Scotland and Wales, along with the Isle of Man and Isle of Wight, fall outside the standard free delivery and lead time terms, so customers in these areas are advised to check costs and timings before ordering. Certain Scottish postcodes are not served at all.
