Roof replacement is a necessary responsibility for every homeowner. When an aging or damaged roof is not replaced quickly, leaks can form that are capable of causing serious water infiltration issues inside the envelope of the home. In addition to damaging the ceilings, insulation, and other surfaces inside the home, roof leaks are known to be responsible for the development of harmful mold and can also cause excessive humidity and air quality issues that can be problematic for the occupants of the home.
Homeowners who are beginning to plan for the replacement of their home's roof should be aware, however, that the project may not be limited to the shingles that need to be replaced. Instead, several additional materials may be needed to complete the project, including those discussed here.
Decking and underlayment
A layer of decking material topped with an underlayment provides some structure for the shingles while also helping to stop water infiltration. The wooden surface of the decking creates a surface upon which the roofing contractor can nail the shingles. If the existing decking material has damaged or deteriorated areas, the roofing contractor will replace it with new decking as part of the roof replacement project.
The underlayment material is a thick layer of felted or synthetic material installed on top of the decking material before the shingles are attached. The decking material is used to protect the decking and help it remain strong in its role of protecting your home. Underlayment materials will need to be replaced, even in situations where the roof decking is still in good condition and able to be left in place.
Drip edges are another material that will need to be replaced during a roof replacement project. A type of metallic flashing, drip edges are installed along the edges of the roof to help ensure that water does not damage nearby materials, such as the fascia. In many areas, the installation of new drip edges is mandated by building codes and failure to install them could result in inspection issues, should the home be sold at a later date.
Water and ice shields
Roof replacement projects should also include the use of waterproof membranes installed in each valley of the roof. This membrane, often called a water or ice shield, is placed underneath the shingles to help protect the areas that are most at risk from constant water flow.
Roof replacement projects can also include ridge capping, boots, flashing, sealants and vents. To learn more about all the materials your roof replacement project will require, contact a local roofing contractor.