Home > Companies > Knauf Insulation Ltd > Supafil® CarbonPlus

Supafil CarbonPlus Cavity Wall Insulation is a high performance, water repellent, non-combustible glass mineral wool for injection into masonry cavity walls and is installed by approved Knauf Insulation contractors. Supafil CarbonPlus Cavity Wall Insulation is classified as Zero ODP and Zero GWP. Supafil® CarbonPlus Cavity Wall Insulation is specifically designed to be used in existing masonry cavity walls which are deemed hard-to-treat, and is suitable for use in narrow cavities down to 40 mm.

Related literature

The following content references this product:

Standard product features

Installed density (minimum):

25 kg/m³.

Thermal conductivity:

0.034 W/mK

Fire Performance:

Euroclass A1 to BS EN 13501-1.


A+ Generic BRE Green Guide rating.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
45-55-45/330 Mineral wool fibre insulation

Product specification

An important note about specifying



Knauf Insulation Ltd


+44 (0)1744 766 600

Product reference

Supafil® CarbonPlus

Manufacturer details

PO Box 10,
Stafford Road,
St Helens,
Merseyside, WA10 3NS
Tel +44 (0)1744 766 600
NBS Plus