Knauf Dritherm

Knauf DriTherm Cavity Wall Insulation

Knauf DriTherm Cavity Slabs are high-performance, non-combustible glass mineral wool batts designed for use in full fill masonry cavity wall insulation. Manufactured using Knauf's ECOSE® Technology, these slabs offer excellent thermal performance, sound absorption, and fire resistance—making them a popular choice for energy-efficient homes and buildings.

With thermal conductivities as low as 0.032 W/m·K (DriTherm 32) and 0.037 W/m·K (DriTherm 37), the range includes options suitable for both standard housing and enhanced performance specifications. DriTherm cavity slabs are BBA certified, moisture resistant, and designed to be easily friction-fitted between wall ties for a continuous insulation layer with no gaps.

Key Features:

• Made from non-combustible glass mineral wool (Euroclass A1 fire rating)

• Friction-fit installation—no sagging, slumping, or gaps

• Thermal conductivity: 0.032 W/m·K (DriTherm 32) and 0.037 W/m·K (DriTherm 37)

• Ideal for full fill cavity wall insulation in new builds

• BBA certified and water repellent

Ideal For:

• Full fill cavity wall insulation in new build masonry construction

• Residential and commercial projects needing fire-safe, breathable insulation

• Walls in exposed locations, including high wind-driven rain zones

• Installations where ease of use and consistent coverage are priorities

At Insulation UK, we supply Knauf DriTherm Cavity Slabs in multiple thermal grades and thicknesses—ready for fast, reliable delivery across the UK.