ROCKWOOL FLEXI 140mm Insulation Slab – 1200 × 600 – Euroclass A1
£49.38 +VAT
ROCKWOOL FLEXI 140mm mineral wool slabs for thermal + acoustic insulation with Euroclass A1 non-combustible performance.
Designed to friction-fit between 600mm centres for fast install and a tight finish. 1200 × 600mm slabs.
Delivery Zone Charges
ROCKWOOL FLEXI 140mm – A1 Non-Combustible Insulation
Upgrade your build with ROCKWOOL FLEXI 140mm, a high-performance stone wool slab that delivers excellent thermal performance and sound reduction, while meeting Euroclass A1 (non-combustible) fire classification.
The unique FLEXI edge helps the slab spring-fit tightly between timber or metal studs/joists—reducing gaps and improving overall performance.
Key Benefits
• Euroclass A1 – Non-Combustible
• Thermal performance: λ 0.035 W/mK / R 4.0 (as per product label)
• Acoustic performance – helps reduce sound transfer through partitions/floors
• Friction-fit for 600mm centres – quicker install, fewer voids
• 1200 × 600mm slab size – ideal for stud walls & joist spaces
Typical Uses
• Stud walls & partitions
• Floor joists / intermediate floors
• Timber frame applications
• Ceilings and internal linings where A1 fire performance is required
Specifications
• Product: ROCKWOOL FLEXI
• Thickness: 140mm
• Slab size: 1200 × 600mm
• Reaction to fire: Euroclass A1
• Thermal conductivity: 0.035 W/mK
• Thermal resistance: R 4.0
Delivery / Collection
Stock available – collect from Kings Langley or order online for delivery across Herts & London.
Trade enquiries welcome.
