Knauf FrameTherm Roll 32 - 140mm Glass Mineral Wool

140mm Knauf FrameTherm Roll 32 is a glass mineral wool roll designed specifically for timber frame wall construction where it sits between studwork. Featuring thermal conductivity between 0.032 W/mK and 0.040 W/mK, this 140mm insulation roll delivers excellent performance. It's non-combustible with an A1 Euroclass fire rating and uses ECOSE® Technology bio-based binder for enhanced sustainability.

Product specification

• Thickness: 90mm
• Width: 1140mm (2 x 570mm)
• Length: 4500mm
• Roll Coverage: 5.13m2
• Pack Quantity: 2
• Density: 28kg/m3
• Weight/m2: 2.52kg
• Weight: 12.93kg
• Thermal Conductivity: 0.032W/mK
• R-Value: 2.8m2K/W
• Type: 140mm Glass Mineral Woll Insulation
• Application: Timber frame walls, Pitched roofs at rafter level
• Facing: Unfaced
• Roll Type: Ready-cut
• Fire Rating (Reaction to Fire): A1(Non-combustible)

Advantages

• Designed to friction fit snugly between timber studs, stopping air movement and heat loss through the insulation layer and around its edges.
• Pre-cut rolls available in 2x570mm or 3x380mm widths to match standard timber stud spacing requirements.
• Mineral wool construction provides excellent sound absorption and acoustic performance compared to many alternative insulation products.

Application

Knauf FrameTherm 32 140mm Rolls are ideal for insulating external walls and warm pitched roofs in timber frame buildings. Timber frame walls generally provide better thermal performance than equivalent masonry construction. However, their lighter weight means acoustic performance becomes more important, requiring insulation materials that excel in sound control. These rolls friction fit between studs to minimise heat loss whilst simultaneously absorbing sound, improving the acoustic qualities of the wall assembly.

Real Performance

Glass and rock mineral wool offers simpler installation compared to rigid board alternatives. The material flexes to follow substrate irregularities and locks together without creating air gaps. 140mm Mineral wool insulation adapts to surface variations and any structural movement, maintaining thermal contact and performance over the building's lifetime. Eliminating air gaps is essential for achieving genuine thermal performance in real-world applications. Insulation that fails to deliver 'as-built' performance undermines its core function and creates unnecessary risk as the construction sector works to bridge the performance gap.

Info

Browse our full Knauf Insulation range and filter by thickness or coverage on the left side. For product suitability advice or bulk quotations, contact us on +4402038839057, email sales@insulationbee or use Live Chat - Lowest UK Knauf Mineral Wool Insulation Prices.