Roxul Hardrock 60 & 80 Roofing Boards have been developed to provide an unrivalled combination of thermal, acoustic and fire safe insulation for most flat roof constructions. Hardrock Roofing Boards have excellent compresion, point load and delamination values. This makes the products suitable for use with all mechanically fixed roof systems. The Hardrock Roofing Boards easily bears normal foot traffic associated with installation and routine maintenance inspections.

Roxul Hardrock, mainly for flat roof insulation, has the excellent compression and point load strengths to resist foot traffic before, during and after installation. The fibre directions are arranged in a way that is suitable to provide these properties but at the same time not to compromise on the thermal properties.

Click here to better understand the mechanical properties of Hardrock and other stone wool products.

Now with FM Approval, Roxul Hardrock insulation boards are FM Approved for use in Class 1 roof constructions. The certification signifies Hardrock’s conformance to the highest international standards as well as our ability to provide building solutions that enables you to meet rigorous loss prevention standards.

You can download our Hardrock Product Brochure which will provide you with more information on technical data, system description, design considerations and sitework.

Proper handling and installation of Hardrock Roofing Boards at site is important to ensure the products perform as specified. A separate product handling guideline is now available.

Furthermore, we have established some typical specifications for Hardrock 60 & 80 Roofing Boards with mechanically fastened membranes and with built-up high performance bituminous membranes.

Click here to download the typical specifications.