A flat roof is a type of roofing which is used to cover a building. This type of roofing is not used to the sloped form of a roof. A flat roof is a horizontal roof or nearly horizontal roof and is used for both commercial and residential building. Materials that used in the flat roofing should allow the water to run out from the building inclination in a free manner.
In olden days, tar and gravel were used for flat roof. In these surfaces, no pooling of water was occurred and it was also sufficient to avoid water from entering. However, these water proof surfaces would go wrong in colder climates, because ice blocks the flow of water on the roof.
In modern flat roofs, a continuous membrane covering is used which is resistant to standing water. These continuous membrane sheets are helpful in all case, even adhesives and sealants are used. These membranes ate helpful for bonding multiple sheets and it also deals with structures that penetrating the roof surface. Sometimes sealed metal roofs use copper or tin but these are more expensive flat roof.
There are many types of flat roofs available, some of them include Polyurethane Foam Roofing, Asphalt, EPDM, Turbo Seal, CSPE, Modified Bitumen, Cold applied liquid membranes, PVC (vinyl) membrane roofing, TPO, Coal-Tar Pitch Built Up Roof and so on. In these flat roof types, the polyurethane foam roofing is considered as the most energy efficient roofing, to which waterproof roofing materials are also available for flat roofs. Asphalt roofing is of four types in which asphalt BUR is the most commonly used for flat roofing. This roofing is made up of several layers of water proofing layers and reinforcing plies. Similarly, each type of roofing is made up of different materials and their feature also varies from each other.
A flat roof is a cost-effective roof shape which can be used for all room space, both below and above the roof. This flat roof is very useful because it allows easy alteration and positioning of solar panels. These roofs are also used for outdoor recreational space, such as roof gardens. Laying this type of tough waterproofing membrane for green roof planting systems will be a great idea.
The author of this article is a famous roofing contractor with vast experience on the technicalities of roofing. He has written several articles on roofing materials and neutral and fact filled reviews of services provided by Vancouver roofing contractors for popular websites.