Knauf FrameTherm Roll 35 90mm Glass Mineral Wool

90mm Knauf FrameTherm Roll 35 is a glass mineral wool roll designed for timber frame wall applications fitted between studwork. With thermal conductivity between 0.032 W/mK and 0.040 W/mK, these rolls deliver excellent thermal performance. They're non-combustible and achieve the highest Euroclass A1 fire rating, manufactured with our ECOSE® Technology bio-based binder.

Product specification

• Thickness: 90mm
• Width: 1140mm (2 x 570mm)
• Length: 4500mm
• Roll Coverage: 6.84m2
• Pack Quantity: 2
• Density: 28kg/m3
• Weight/m2: 2.52kg
• Weight: 12.93kg
• Thermal Conductivity: 0.035W/mK
• R-Value: 2.55m2K/W
• Type: 90mm Glass Mineral Wool 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

• Friction-fitted between timber studs to prevent air movement and infiltration, reducing heat loss effectively.
• Pre-cut rolls available in 2x570mm or 3x380mm widths to match standard timber stud spacing.
• Mineral wool construction provides superior sound absorption and acoustic reduction compared to many alternative insulation products.

Application

Knauf FrameTherm 35 90mm rolls suit insulating external walls and warm pitched roofs in timber frame buildings. Timber frame walls typically provide better thermal insulation than comparable masonry construction. However, their lower mass means insulation materials must deliver enhanced acoustic performance to compensate. FrameTherm 35 90mm rolls are engineered for friction fitting between studs, minimising heat loss whilst providing acoustic absorption to boost overall wall performance.

Real Performance

Glass and rock mineral wool offers simpler installation compared to rigid board alternatives. They adapt to substrate irregularities and interlock seamlessly, eliminating air gaps. 90mm Mineral wool insulation accommodates substrate variations and building movement over time, maintaining close contact and preserving thermal performance throughout the building's life. Eliminating air gaps is essential for genuine performance in your application. Any insulation failing to deliver 'as-built' thermal performance undermines its core function and creates unnecessary risk as the construction sector closes the performance gap.

Info

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