URSA 35 Cavity Wall Batt 3.69mtr sq (0.035W/mK) 100mm

Key features

• BBA-approved non-combustible glass mineral wool insulation
• Water-repellent additive resists moisture ingress in cavity walls
• 455mm width fits standard wall tie spacings; friction-fit design minimises cutting and waste
• Thermal conductivity 0.035W/mK for consistent insulation performance
• Suitable for full or partial cavity fill in new external masonry walls
• 3.69m² coverage per pack at 100mm thickness

Specifications

Material

Non-combustible glass mineral wool

Thickness

100mm

Width

455mm

Coverage

3.69m² per pack

Thermal conductivity

0.035W/mK

Certification

British Board of Agrément (BBA) approved

Search keywords

URSA 35 cavity wall insulation · 100mm cavity wall batt · Glass mineral wool insulation · Cavity wall batts · URSA cavity insulation

Description

URSA 35 Cavity Wall Batt is a non-combustible glass mineral wool insulation product with British Board of Agrément (BBA) approval for use in external masonry cavity walls. The batt is manufactured with a water-repellent additive to resist moisture ingress, making it suitable for both full and partial cavity fill applications.

Supplied at 455mm width, the flexible batt is designed for friction fitting between standard vertical wall tie spacings, reducing on-site cutting and material waste. With a thermal conductivity of 0.035W/mK, it delivers consistent insulation performance across the cavity width.

Each pack covers 3.69m² at 100mm thickness, making it straightforward to calculate coverage for your project. The product is quick to install and requires no additional fixings when properly positioned between cavity ties.