RMA Roofing - Composites for Construction are the industrial and commercial gutter lining and roofing system specialists incorporating a concrete gutter lining service for commercial and domestic properties. In 1973 we designed, manufactured and operated our unique RMA Spayed Membrane Process. The system was designed to form a seamless glass fibre roving reinforced membrane to any shape of roof structure or trough gutter. In the early 1970's the system was used by the M.O.D. to seal leaking aircraft hangars, some of our treated hangars at what was then R.A.E.