Are you in the process of adding a single storey extension to your home, or maybe a garage or utility room? The chances are the architect will have specified a flat roof using one of three types of waterproofing material.
From the post-war building boom of seventy years ago, right up to the present day, flat roofs are more often than not the style of choice on single storey home extensions and garages, and low-rise industrial and commercial buildings. They are also stipulated for many tall blocks of flats and commercial buildings, where air-conditioning and other units are housed on the roof. Using modern materials, a properly laid flat roof is significantly cheaper that a pitched tiled or slate roof, both in material and labour costs, and, when properly laid, will have a lifespan in excess of thirty years.
Choosing your type of roof
At Hurn Builders, we have teams of highly skilled, professional roofers with years of experience in the application of built-up felt roofs, EPDM roofing and GRP roofing. Here is a brief insight into the three most popular materials used to waterproof your flat roof.
Built-up Felt Roofing
The forerunner of flat roof waterproofing, and still one of the most popular and cheapest methods of finishing a flat roof. Usually of three layers of pitch impregnated felt, many roofing companies today put down an initial layer of synthetic underlay for its superior waterproofing properties. This is followed by two layers of felt laid using hot pitch as the bonding agent. In areas of strong sunshine, a final covering of chippings sealed with hot pitch may be added. A properly laid built-up felt roof should last for at least twenty years. This type of roof is not designed to be walked on. Should you need to access the roof scaffold boards should be laid, to minimise the risk of the felt being punctured.
Although a material which has been around for over fifty years, Ethylene Propylene Diene Monomer (EPDM), has increased in popularity as a cost-effective, long lasting roofing material over the last three decades. A single ply rubberised sheet, it is bonded directly to the roof decking using a wet adhesive. Edge trimming and sealing is then completed using a specialist contact adhesive. EPDM is quick and easy to lay by professional roofers and has a lifespan of over twenty-five years.
The (relatively) new kid on the block. Although Glass Reinforced Plastic (GRP), has been around since the 1930s and regularly used for boat hulls, car bodies, residential and commercial ponds, and water tanks; it is only over the last twenty plus years it has become popular as a high quality, flexible, durable and long-lasting roof covering. If you are considering using your flat roof as a sun deck or balcony from an upstairs bedroom, a GRP roof using 600csm matting will do the job admirably. With resin available in various colours, (the most popular is grey), and preformed trims to finish the edges, your GRP roof will look good, and provide twenty-five to thirty years of excellent service.
Consult the experts
Do you want a new flat roof on a home extension or industrial premises, a leaky kitchen roof repairing, or major property insurance work undertaken? At Hurn Builders we have built up an enviable reputation for providing a fast, professional and cost-effective service across all areas of the roofing industry. If you would like more information on how we can help you, or information on the best material for your new flat roof, please contact us on [phone], to discuss the matter with one of our experienced project managers.