When you live in the UK, you know all too well about how rain can make itself known by way of a water-retentive roof, especially if the roof is flat. If you have come to the conclusion that your old roof is no longer salvageable, then you need to plan for an upgrade. If you are one of these people, you probably have a question or two about how a flat roof is installed and the materials that are used in its manufacture.
Making an Installation Decision
Those are two relevant questions, as flat roof materials come in various selections. Some of the choices include traditional bitumen felt membranes, while others may include GRP fibreglass or single-ply membranes, such as EPDM. To decide on a material, however, you need to consider the rooftop, the condition of the existing roof substrates and the level of detail involved. These components, in and of themselves, can help you decide what system to install.
Re-Covering a Flat Roof
Wiltshire roofers suggest that a straight re-covering of a flat roof is the most affordable way to install a flat roofing system. However, this particular approach is only suggested when the roof covering and decking are in sound shape. When the existing substrates are in poor condition, you may need to have the roof re-decked and striped. If the roof is re-covered, it is considered a repair. Otherwise, it is considered an upgrade.
Some homeowners become concerned if water ponds on a flat roof. However, some roof designs promote the holding of water in order to cool off the roof. If a roof is not designed with sufficient drainage falls, then any surface water may be difficult to drain. A drainage fall of 1-80, according to experts, is the minimum requirement for effective run-off. While a small amount of surface water on this type of roof should not be a worry, any sagging of the supporting deck may also lead to surface water retention and therefore suggest the need for a new installation.