Built up roof is often known as tar and gravel roofing. In simple terms, the tarpaulin is a thick layer of tar, also known as bituminous earth, that covers the top of the roofing structure. This is typically a combination of bituminous mineral deposit or hydrocarbon ashes that is either obtained from an organic source or is extracted from petroleum solvents. The tar and gravel roofing system is generally composed of at least two layers; the top layer usually consisting of tar mixed with gravel is referred to as the plywood layer.
The next layer consists of a layer of asphalt or rubberized coating. Asphalt acts as a layer of protection for the bituminous layer. Rubber coating, on the other hand, serves as a layer of insulation that allows heat and cold air to pass through the roofing material. A third layer, a synthetic polyethylene sheet, acts as a water barrier between the first two layers. This water barrier allows heated air to be directed away from the roofing structure, thus reducing the risk of fire by preventing fuel combustion.
Roofs are susceptible to extreme weather conditions such as snow, rain, and extreme sunlight. This makes it difficult for roofing systems to provide the required level of protection. During these periods, leaks in the roofing systems occur. These leaks may be caused due to damaged flashing, sagging chimneys, poor structural integrity, and improper anchoring. The presence of such leaks requires immediate roof repairs and restoration work.
Roof leaks that occur in older houses are generally caused by cracking at the point where the roof deck meets the built-up roof system. The presence of this crack could result in water seeping into the room below. Such seepage can lead to the growth of mold, mildew, and pests. To avoid such an occurrence, waterproofing the roof is highly recommended.
While roofing contractors can perform regular roof maintenance such as removing debris, repairing tears, replacing flashing, and so forth, they often prefer to employ a machine to do the work. Such machines include torsion springs, ski machines, and cable pulley/rotor tools. Each of these tools works by raising and lowering the roofing structure on four legs. Once these tools are installed, they are able to efficiently perform the necessary work even under difficult circumstances.
Torsion springs are used in built-up roofing systems, because these provide excellent lateral support. The elasticity of these springs also provides maximum strength. In order to install the springs, the lower half of the roof structure should be removed. Removing the bottom few inches allows access to the supporting deck, which is then placed on the ground. With the deck in place, a jackhammer is used to remove the upper layers of the shingles.
Many roofing contractors prefer to use hot tar or liquid tar for roof coating. Hot tar roofs are usually applied with a paint roller. The tar is applied uniformly and thoroughly using a wide paint roller. After the tar dries, a further coat is added. However, tar is susceptible to pore leakage; hence, additional coats must regularly be applied to reduce the chances of water seepage.
Flat roofing systems are designed to resemble flat roofing materials. On the other hand, they consist of multiple metal layers. These layers are wired together and then attached to a steel roof frame. For roofing contractors, flat roof repair is very easy. They simply have to replace all damaged sections of the flat roof.
A 4 ply roofing contractor can also perform roof coating work without employing a team of professionals. In this case, he first inspects your roof and comes up with a list of possible roofing solutions. Based on your needs, the contractor designs and builds a roofing system that best fits your requirements. In most cases, the entire roofing system is built by the 4 ply roofing contractor. This leaves you with just one job – to fix it!
If your roof is made from clay, stone or concrete, you may want to consider using a rubber roof coating. Rubber roofing is a kind of membrane used to protect roof membranes and slates. This type of roof coating requires no drilling, hammering or cutting. Reinforced fabric is used as a backing, which is then applied to the roof surface.
Re-roofing jobs often have the benefit of providing homeowners with more space for storage. The appearance and maintenance of your roof are also enhanced by a well-done built up roofing repair and maintenance effort. If you want to learn more about these jobs, you can contact a local roofer who specializes in this service. Alternatively, you can search the Internet for online resources that discuss roofing materials and coatings.