Flexi®
Flexi® is a non-combustible, multi-use, dual purpose acoustic and thermal stone wool insulation slab with a flexible edge along one side.
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Application(s)
- Internal Wall
- Drylining & Partitions
- Floors & Ceilings
- Ground Floors
- Separating Floors
- Internal Floors
- Separating Walls
Product description
ROCKWOOL Flexi is manufactured with a flexible edge which supports a close fit between the insulation and the supporting framework. The insulation can be fitted between fresh timber and will expand into the wider space as the timber dries out and shrinks back. ROCKWOOL Flexi is Euroclass A1 non-combustible as defined in EN 13501-1 and provides additional thermal and acoustic benefits in application.
It is suitable for use all over the home, in pitched roof rafters, framed external walls, internal partitions, intermediate floors, separating walls and floors, and timber suspended ground floors.
- Euroclass A1 in accordance with BS EN 13501-1 Reaction to Fire rating
- Thermal conductivity 0.038 W/mK (50-120mm)
- Thermal conductivity 0.035 W/mK (≥ 140mm)
- Classified in accordance with BS EN 13162:2012
- Density exceeds 10kg/m³ in accordance with Approved Document E
Flexi Datasheet
Flexi® is a non-combustible, multi-use, dual purpose acoustic and thermal stone wool insulation slab with a flexible edge along one side.
Flexi Installation Guide
Installation guidelines for ROCKWOOL Flexi®
SUIS ROCKWOOL UK
Safe use instruction sheet ROCKWOOL stone wool insulation products
Republic of Ireland Price List
Price List March 2025
UK Price List
Price List March 2025
Hands-on fire-stopping training
ROCKWOOL’s specially created expert led one-day course in fire stopping theory and practical installation practice for industry professionals.
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Special remarks
I strived to make the house as eco-friendly as possible with the use of sustainable products, and through the use of ROCKWOOL insulation, it helped me achieve those goals. Olaf Mason, Self-Builder and Owner of The Triangle House