Northern Kentucky Roofers: Article About The Importance Of Roofing Materials
Before a roof's exterior materials such as metal panels, asphalt shingles or cedar shakes can be installed, one or more layers of membranes or underlayment are put into place. This material is designed to boost the roof's waterproofing abilities. The membrane also works to prolong the roof's lifespan. Different types of roofs use a variety of membranes, and each type has its own advantages. Experienced Northern Kentucky roofers can help homeowners to select the most effective waterproof membrane for their homes.
Blended membranes are considered to be the top-of-the-line material for waterproofing the roof. These membranes consist of layers of asphalt and a rubber-like material called styrene-butadiene-styrene (SBS). The SBS absorbs the asphalt, which acts as a waterproofing agent. During periods of sub-freezing weather, the SBS lends flexibility to the membrane, which is beneficial for homes with metal roofs because metals contract and expand with rapid temperature changes. When temperatures are high such as under the direct sun during the summertime, the SBS stops the asphalt layer from becoming viscous and thinning.
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These premium waterproofing materials can be used on any type of a home or roof but are most commonly associated with rooftops made of copper, zinc, galvanized steel and tin.
Asphalt saturated fiberglass membranes are the most commonly used membrane on residential structures. These membranes are somewhat thinner than the premium materials and average 1.0 to 1.5 millimeters. These membranes can be used underneath heavy roofing materials, such as clay or concrete tiles and slate, without adding to the weight of the roof. This product comes in large rolls, which is nailed or stapled onto the roof's decking.
Another popular choice for membranes is the self-adhesive type. During the manufacturing process, a split-back release film is applied to the back of the product so that the contractors only need to peel off the backing and press the membrane to the wooden decking. No additional fasteners are needed to adhere it to the roof. To account for variable temperature and humidity conditions, some manufacturers make a grade of self-adhesive membrane for summer or warm climates and a separate product for cold or wintry climates.
In addition to the layer of membrane, roofing contractors may also need to install a water guard around portions of the roof's edge. These guards further enhance the ability of the roof to prevent water intrusion through the wooden decking and into the home's attic and living spaces.