EPDM membrane is frequently on flat roofs. EPDM membranes have a useful life of 40+ years and have been under use in United States and Europe for over 40 years. PEB international have recently partnered with Firestone roofing products for supplying EPDM membranes which are applied under strict quality control. EPDM membranes comes in varying lengths and sizes offering possibility of one size for complete roof without joints. Firestone flag ship product is rubbergard EPDM for low slope roofs. The EPDM system is he most economical EPDM roofing system available and is suitable for a wide variety of buildings. The EPDM sheets are loose laid over an acceptable substrate. Rough substrates need to be isolated with an acceptable protective layer. Adjoining sheets are overlapped a minimum of of 100mm and the seams are spliced with a self-adhesive to form a watertight membrane. The EPDM membrane is held in place using the following materials as ballast: gravel, concrete papers, crushed gravel or poured in Site concrete.