Can EPDM Be Laid Over Existing Roof Coverings?
One Piece EPDM membrane can be laid over existing felt, bitumen, Fibreglass, cement boards and steel roof cladding. In some cases these substrates may require specialist adhesives or mechanical bonding. Remember when installing any roof membrane it is equally important that the roof structure/decking is sound and rot free. This can normally only be assessed by removing the old waterproof material. Make sure all sharps are removed. If necessary fix a thin plywood board over the old roof cover to achieve a superior bond and finish to the EPDM rubber Sheet. Self Adhesive EPDM membrane can be laid over existing felt, bitumen, Fibreglass, cement boards and steel roof cladding. In some cases these substrates may require specialist adhesives or mechanical bonding. Remember when installing any roof membrane it is equally important that the roof structure/decking is sound and rot free. This can normally only be assessed by removing the old waterproof material. Make sure all sharps are removed.