Toledo Roofers: Article About Roofing Underlayment
One of the essential layers of roofing material is the underlayment. Sandwiched between the roof's decking and the exterior layer of shingles or tiles, the underlayment provides a protective barrier against wind, moisture and insects. Local Toledo roofers can help homeowners understand the differences between the various types of underlayment and choose the best material for their homes.
The most commonly used type of underlayment is felt paper saturated with asphalt. This type of paper can be used on roofs with a steep pitch, which are common in northern Ohio. The paper may be made of organic or fiberglass substrate, with organic being the most often used. The felt underlayment is resistant to water but not waterproof. This paper comes in two thicknesses, 15 pound and 30 pound. The 30 pound paper is better for use in Ohio as it offers a greater level of protection against water and wind, especially during freezing and heavy snow conditions. The felt is fastened to the roof either with staples or plastic wind strips.
Rubberized asphalt is another type of underlayment that homeowners can choose. This type of material is self adhesive and installs quickly.
Roofing experts from Johnson Construction of Toledo Ohio would be happy to answer any questions you have about roof repair or residential roofing.
It has non skid and weather resistant properties that repel moisture. The adhesive is rated up to 250 degrees Fahrenheit. The rubber like surface of this material makes it ideal for water resistance, as the openings created from roofing nails will be sealed right up by the flexible rubber. A polymer film coating and fiberglass backing add to the strength of rubberized asphalt. However, these extra layers add to the thickness and weight of the underlayment, which may necessitate some extra trusses or bracing in the roof's wooden substructure.
Polymer modified bitumen is the least commonly used type of underlayment for residential use. This material is a cross between rubber and asphalt layered upon a synthetic backing. This underlayment is good for use on homes, garages and other buildings with a flat or low pitched roof. The polymers bond with each other at the atomic level, creating a strong material that is highly resistant to moisture exposure. This can help prevent leaks due to ponding on flat roofs or on structures with poor drainage. This material can also be used as a protective layer on homes where the property owners have installed green roofing or a living roof, which is heavy and often saturated with water to help grow the plants.