Rockwool Flexi Slab

Rockwell Flexi Slab is a unique insulation product with a patented flexible edge along one side. This flexi edge ensures a perfect fit is maintained between the product and its supporting framework. Suitable in walls, partitions, floor and roofs where perfect fitting insulation is essential.

Available in 50mm/70mm/100mm thickness

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ROCKWOOL FLEXI® has been designed as a multi-use, dual purpose acoustic and thermal mineral wool insulation with a unique flexible edge along one side. The FLEXI slab is manufactured with the patented flexible edge which ensures a perfect fit is maintained 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. Other types of insulation can often become displaced resulting in cold spots or poor acoustics. FLEXI provides excellent thermal and acoustic performance as well as being A1 classified non-combustible for fire resistance.

Additional information


50mm, 70mm, 100mm

Technical Information

Technical information on this product can be found by downloading the manufacturer data sheet from the options below.