After the roof deck has been properly prepared and before any roofing material is installed, the roof felt has to be installed. Generally, roofing contractors use 15lb and 30lb building felt. Called underlayment, this layer serves to protect the building from precipitation before the roofing is applied. It also provides a permanent second layer of defense as back up for the roofing. This flexible layer can be installed quite quickly. In especially cold climates, an underlayment called ice and water shield is required at the eaves in order to prevent damage to the structure because of ice dams. The formation of an ice dam can cause water to back up under the shingles. This can lead to leaks and eventually, rotted decking.
Roof flashing consists of metal sheet materials that are used to protect against water leakage at the junctions and edges of roof surfaces. Critical areas for flashing are valleys, eaves, rakes, chimneys and other penetrations. Flashings around roof protrusions, such as chimneys or a pipe are particularly critical. The water is not only interrupted by a penetration but can be redirected in to the house. Having an extra layer redirects the water away from the penetration. Galvanized sheet steel and aluminum are today’s principal flashing materials.
Guyette Roofing and Construction always installs new flashing and felt during the roofing process. We take pride in properly roofing around chimneys and other roof protrusions that most roofers will not touch. With over 30 years of experience and the top roof technicians in Montgomery, Guyette will undertake roofing and construction projects that other contractors turn down. Guyette Roofing and Construction will provide quality work with excellent customer care.