EARTHWOOL GLASS MINERAL WOOL DRITHERM 32 ULTIMATE 1200 X 455 X 100mm (6) - 3.28mtr sq

Key features

• Thermal conductivity 0.032 W/mK for consistent insulation performance
• 100mm thickness suitable for standard cavity widths and timber frame spacings
• Six batts per pack, 3.28m² total coverage, sized 455 x 100mm (18" x 4")
• Non-combustible mineral wool with fire safety performance
• Moisture-resistant; maintains performance in damp conditions
• Made from recycled glass and natural minerals
• Easy to cut and fit between standard 455mm (18") spaced timber members
• Suitable for cavity walls, lofts, timber frames and retrofit applications

Specifications

Product type

Glass mineral wool insulation batts

Thermal conductivity

0.032 W/mK

Thickness

100mm

Width

455mm (18 inches)

Length

1200mm per batt

Batts per pack

6

Total coverage per pack

3.28m²

Density

Approximately 32 kg/m³

Fire performance

Non-combustible

Moisture resistance

Inherent; resists water absorption

Composition

Recycled glass and natural minerals

Suitable for

Cavity walls, lofts, timber frames, retrofit insulation

Common applications

• Cavity wall insulation in new build and renovation projects
• Loft insulation between timber joists at 455mm (18") centres
• Timber frame wall insulation in stud work at standard spacings
• Pitched roof insulation between rafters
• Retrofit insulation in existing cavity walls
• Suspended timber floor insulation
• Internal partition wall insulation for acoustic and thermal performance
• Basement and below-ground timber frame applications
• Commercial and residential building envelope insulation

Search keywords

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Description

Earthwool Glass Mineral Wool Dritherm 32 Ultimate provides reliable thermal insulation in a convenient batt format. The 100mm thickness delivers a thermal conductivity of 0.032 W/mK, meeting Building Regulations requirements for many standard applications. Each pack of six batts covers 3.28m² and is sized to fit standard 455mm (18") cavity widths and timber frame spacings, reducing waste and installation time on site.

The product is manufactured from recycled glass and natural minerals, offering non-combustible fire performance. It resists moisture absorption and maintains its insulation properties in damp conditions, making it suitable for use in exposed locations and areas subject to condensation risk. The batts are easy to handle and cut to size, and can be installed between timber studs, joists and rafters without specialist equipment.