Rockwool Flexi Acoustic Slab 33kg/m3 is a fantastic dual purpose semi-rigid insulation slab with thermal and acoustic properties and a special flexible edge that is exclusive to Rockwool. This product’s unique design allows it to be fitted snugly between frames, both timber and metal, without leaving gaps and without having to be cut to size. This perfect fit allows for an optimal insulating performance. This product can be used in a number of applications, including inside walls and in loft insulation. It has anti-slumping properties as well as being non-combustible and water repellent. It is also fire rated to A1 classification. This slab is available in the following thicknesses: 50mm 60mm 70mm 90mm 100mm 120mm 180mm 200mm   Contact us today.