Where to buy a 50mm insulation board?

You can buy an insulation board 50mm thick online from Insulation Wholesale. We stock all major insulation types in this thickness and supply both small quantities and full pallet orders. Our team can help you choose the right 50mm board for the job. We offer low wholesale pricing, with UK stock ready to move and fast nationwide delivery straight to your site.

How to cut 50mm insulation board?

For most 50mm boards: Measure carefully and mark where to cut with a straight line. Use a fine-toothed hand saw or insulation saw to cut. Support the board fully to avoid snapping. For PIR or phenolic boards, a sharp saw works better than a knife because of the dense, rigid foam core.

How to install 50mm insulation board?

You should fit the boards without leaving gaps. Lay them tightly together, with joints taped where required Mechanically fix them with insulation fixings, or Bond them with adhesive (for internal walls) Avoid gaps, crushed edges, and poor fixing as these reduce performance.

How good is 50mm insulation board?

50mm insulation board thickness offers a noticeable improvement in heat retention, especially in older buildings. It does not match very thick insulation, but it offers strong performance for its depth. 50mm is often a practical balance between available space and thermal performance. A 50mm board can significantly reduce heat loss and help meet modern thermal targets in refurb or constrained builds without major structural changes.

50mm Insulation Board At wholesale Prices

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Products in 50mm Insulation Board

In stock only

50mm Unilin T&G XT/CW Partial Fill Cavity Wall Insulation Board 1200mm x 450mm Pallet of 225 (121.50m2)

50mm Unilin Thin-R XT/CW Partial Fill Cavity Wall Insulation (T&G) is typically used in external walls of buildings with cavity wall construction.

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50mm Unilin Thin-R PIR Insulation Board 2400mm x 1200mm (8′ x 4′) Pallet of 48 (138.24m2)

50mm Unilin Thin-R PIR insulation is a foil faced, high-performance insulation solution that offers exceptional thermal efficiency and durability. This polyisocyanurate insulation board, formerly known as Xtratherm, is ideal for a range of applications, such as floors, pitched roofs, and walls.

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50mm Insulation Board

Products in 50mm Insulation Board

50mm Unilin T&G XT/CW Partial Fill Cavity Wall Insulation Board 1200mm x 450mm Pallet of 225 (121.50m2)

50mm Unilin Thin-R PIR Insulation Board 2400mm x 1200mm (8′ x 4′) Pallet of 48 (138.24m2)