EARTHWOOL GLASS MINERAL WOOL DRITHERM 32 ULTIMATE 1200 X 455 X 125mm (4) - 2.184mtr sq

Key features

• 125mm thickness for effective thermal resistance in cavity walls and timber frames
• 455 x 125mm (18" x 5") batt size minimises cutting and waste on site
• Pack of four batts covers 2.184m² per delivery unit
• Moisture-resistant glass mineral wool maintains performance in damp conditions
• Fire-rated performance supports building regulation compliance
• Consistent density and thermal conductivity across the product range
• Suitable for new build and retrofit applications
• Lightweight and easy to handle during installation

Specifications

Product type

Glass mineral wool insulation batts

Thickness

125mm

Width

455mm (18 inches)

Depth

125mm (5 inches)

Length per batt

1200mm

Batts per pack

4

Total coverage per pack

2.184m²

Thermal conductivity

0.032 W/mK

Density

Approximately 32 kg/m³

Fire classification

A1 (non-combustible)

Moisture resistance

Yes

Suitable for

Cavity walls, timber frames, loft insulation

Common applications

• Cavity wall insulation in new build residential properties
• Retrofit cavity wall insulation in existing masonry construction
• Timber frame wall insulation in house building
• Loft and attic insulation between joists
• Acoustic damping in partition walls
• Insulation in exposed or high-moisture environments
• Light commercial building thermal performance
• Renovation projects where space constraints limit batt depth
• Fire-rated insulation requirements in building regulations compliance
• Thermal bridging reduction in structural timber applications

Search keywords

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Description

Earthwool Dritherm 32 Ultimate is a glass mineral wool insulation product engineered for thermal and acoustic performance in residential and light commercial buildings. The batts are 125mm thick with a cross-section of 455 x 125mm (18" x 5"), supplied in packs of four to cover 2.184m². The product is designed to fit standard cavity widths and timber frame spacings, reducing cutting waste and installation time on site.

The material offers consistent thermal conductivity and is manufactured to support fire safety requirements in building regulations. Dritherm 32 Ultimate is moisture-resistant and maintains its performance in damp environments, making it suitable for exposed locations and areas subject to condensation risk. Installation is straightforward using standard fixing methods, and the product can be cut to length on site where required.