Knauf DriTherm 37 Cavity Wall Insulation Slabs 50mm - 1200 x 455mm - 6.55m² Pack
The Knauf DriTherm 37 Cavity Wall Insulation Slabs 50mm - 1200 x 455mm - 6.55m² Pack are water-repellent glass mineral wool insulation slabs designed for full-fill external masonry cavity walls.
Manufactured by Knauf Insulation, DriTherm 37 provides reliable thermal performance with a thermal conductivity of 0.037 W/mK. Each pack contains 12 slabs, with each slab measuring 1200 x 455mm and providing a total pack coverage of approximately 6.55m². The slabs are sized to fit between standard wall ties and are designed to knit closely together, helping create a continuous layer of cavity wall insulation. They are suitable for new-build masonry walls, extensions and appropriate refurbishment projects. DriTherm 37 incorporates a water-repellent additive and is non-combustible with a Euroclass A1 reaction to fire classification, making it a practical choice where thermal efficiency, moisture resistance and fire performance are important.
Knauf DriTherm 37 Cavity Wall Insulation Slabs 50mm - 1200 x 455mm - 6.55m² Pack - Key Features & Benefits
- 50mm cavity wall insulation slabs
- Designed for full-fill external masonry cavity walls
- Suitable for new-builds, extensions and appropriate refurbishment projects
- 12 slabs per pack
- 6.55m² total pack coverage
- 1200 x 455mm individual slab size
- Water-repellent glass mineral wool construction
- Thermal conductivity of 0.037 W/mK
- Thermal resistance of approximately 1.35m²K/W
- Euroclass A1 reaction to fire classification
- Non-combustible insulation
- Designed to fit between standard wall ties
- Helps create a continuous thermal insulation layer
Ideal For
- Full-fill masonry cavity walls
- External cavity wall insulation
- New-build residential construction
- Extensions
- Suitable cavity wall refurbishment projects
- Brick and block cavity wall systems
Product Specifications
- Brand: Knauf Insulation
- Range: DriTherm 37
- Product Type: Cavity Wall Insulation Slabs
- Material: Glass Mineral Wool
- Thickness: 50mm
- Slab Length: 1200mm
- Slab Width: 455mm
- Pack Quantity: 12 slabs
- Pack Coverage: 6.55m²
- Thermal Conductivity: 0.037 W/mK
- Thermal Resistance: Approx. 1.35m²K/W
- Reaction to Fire: Euroclass A1
- Application: Full-Fill External Masonry Cavity Walls
- Manufacturer Model No.: 2400379
- RBS SKU: IN/CA050A
Full-Fill Cavity Wall Insulation
DriTherm 37 is designed to fully fill the cavity between the inner and outer masonry leaves. The slabs fit closely between wall ties and adjacent insulation sections, helping minimise gaps and maintain a continuous thermal layer through the wall construction.
The water-repellent treatment helps the insulation perform effectively within suitable external masonry cavity wall systems.
Thermal & Fire Performance
With a thermal conductivity of 0.037 W/mK, the 50mm slabs provide a thermal resistance of approximately 1.35m²K/W.
The insulation is also classified Euroclass A1 for reaction to fire, meaning it is non-combustible.
Installation Guidance
Install in accordance with the relevant wall design, building regulations and Knauf Insulation installation guidance. Slabs should be closely butted together and fitted carefully around wall ties, openings and junctions to minimise gaps in the insulation layer.
Always confirm that the cavity width, wall construction and exposure conditions are suitable for the specified insulation system before installation.
