A full roof replacement means replacing the existing waterproof or water-resistance layer on a roof. Roofing asphalt felt is an inexpensive underlayment product and uses asphalt shingles as its protective covering material. When a home or building undergoes roof replacement it may require complete replacement of asphalt shingles, as well as installation of new waterproofing membrane and reinforcement shingles for additional protection.
The best way to avoid roof replacement is to have the new waterproofing membrane installed during the roof construction. Once the roofing membrane has been installed, a final roof covering is often installed overtop. However, if an individual is not confident about performing this task themselves, it may be possible to hire a roofing contractor to complete the project. It is important to hire a qualified roofing contractor who can offer advice on the proper use of roofing products and materials. He or she will know which products will be best to use during different climates and conditions, and which are best suited to the type of structure being replaced.
Once the new membrane is in place, and waterproofing membrane installed, the home owner should then install all required roofing materials such as shingles, roofing felt, shingle blocks, asphalt shingles, and caulking. Before installing the roof covering, a final waterproofing layer should be added to the roof to prevent water seeping under the membrane. This roof coating may include polystyrene, tar, or even cedar shake for added weather resistance and moisture resistance.
When installing the new waterproofing layer, there are several options to consider including self-adhesive roof tiles, rubber-backed roofing tar, or a combination of tar and felt, depending on the climate conditions. For more detailed instructions on how to install the waterproofing layer, contact your roofing contractor.
The amount of time needed for the installation will depend on the type of roof, the climate in the area, and the thickness of the existing roofing materials. For roofs that are thinner than 10 inches, it should take about two days for the roof covering to dry and harden completely. For thicker roofs, the roof covering may need to be placed on top of the existing membrane within one day. Once the new layer has been applied, it should be covered with a second layer of waterproofing material to seal it in place. If it rains, the new layer will provide additional protection from rain water infiltration and allow the roof to keep from leaking.
Many people choose to have their roofs replaced because they want to improve the aesthetics of their homes. In addition to giving a new, modern look, the change in look will also provide a new, more practical means to ventilate the house. Since the majority of modern roofs are insulated, less energy will be used to cool and heat the home.