Where to buy insulation by thickness?

You can buy insulation by thickness from Insulation Wholesale. We stock multiple materials across a full depth range, so you can choose the material that best fits your construction build-up, without compromising. Our team helps match insulation thickness to your application, whether for floors, walls, roofs, or specialist applications. We supply UK stock and support both trade and DIY customers with clear advice and reliable delivery.

What insulation thickness is best?

There is no single “best” insulation thickness. The right choice depends on the space available, the target U‑value, and the material used. A thinner high‑performance foam can outperform a thicker fibrous product, while deeper mineral wool can give better sound control and fire resistance. Choose the thickest insulation that fits without compression while complying with UK Building Regulations.

Can different materials be mixed at the same thickness?

Yes, you may combine materials - as long as they are compatible and correctly detailed. You can combine a rigid board layer with mineral wool of the same depth to improve thermal control and sound absorption, for example. The key is to maintain continuity with no air gaps. Do a full vapour control and condensation risk assessment before combining materials.

Insulation By Thickness Acoustic Non combustible

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Clear All Acoustic

Non combustible

150mm Isover CWS 36 Cavity Wall Slab 3.28m2 Pack

150mm Isover CWS 36 Cavity Wall Slab offers excellent thermal insulation for cavity walls, effectively reducing heat loss and boosting energy efficiency. Lightweight and easy to install, it delivers reliable, long-lasting performance.

£26.91£32.29 Ex VATInc VAT
£8.20£9.84 Per m2 Get restock alert
60mm Superglass Multi Acoustic Roll Insulation 13.50m2 Roll

60mm Superglass Acoustic Partition Roll (APR) is a lightweight, non-combustible glass mineral wool insulation roll. It is suitable for the following applications: internal walls and floors, timber and metal stud partitions, drylining systems and separating walls and floors. Manufactured at a minimum density of 10kg/m³.

£29.41£35.29 Ex VATInc VAT
£2.18£2.62 Per m2 Get restock alert
80mm Superglass Multi Acoustic Roll Insulation 12.48m2 Roll

80mm Superglass Acoustic Partition Roll (APR) is a lightweight, non-combustible glass mineral wool insulation roll. It is suitable for the following applications: internal walls and floors, timber and metal stud partitions, drylining systems and separating walls and floors. Manufactured at a minimum density of 10kg/m³.

£40.15£48.18 Ex VATInc VAT
£3.22£3.86 Per m2 Get restock alert

150mm Isover CWS 36 Cavity Wall Slab 3.28m2 Pack

60mm Superglass Multi Acoustic Roll Insulation 13.50m2 Roll

80mm Superglass Multi Acoustic Roll Insulation 12.48m2 Roll