The Important Parts of Residential Roofing System
To be able to maintain one’s home in the best condition, a homeowner should take time to know and learn about the basic structures so that when the time comes for a major repair or for an additional improvement to be done, there won’t be much of a problem in discussing thoroughly these projects with the contractor.
Once a homeowner has a firm grasp of the basic components and structures, he is able to find ways to choose the right materials for his home parts, like for example with the roofing system, knowing about the basic parts may help him decide what better roof materials should be selected. There are three important parts in the roofing system: underlayment, flashing, and shingles or tiles.
Roofing underlayment is a material that is first installed directly onto the roof deck as an added material protection from the coarse weather condition and because of this reason, most underlayment materials are water-resistant. Roofing underlayment comes in three main types and each type is designed to highly protect the roofing structure from all kinds of weather conditions and they are: the conventional asphalt felt paper or also called tar paper, which is actually made up of a high percentage of asphalt or bitumen, polyester and cellulose; the synthetic type is basically still of asphalt but with a mixture of fibreglass to provide more resistance from tear and make the underlayment stable; and the rubberized asphalt underlayment that consists of a greater percent of asphalt and rubber polymer, designed with a special back that acts as a waterproof seal between the underlayment and the roof deck.
Roof flashing is considered a major component in roofing because it functions as a sealer to certain areas in the roof, specifically the roof joints, where it is highly susceptible to water leaks. The galvanized sheet metal is known to be the most preferred roof flashing material, while the aluminium and copper can also serve well as a flashing material sealer. The common method used for installing roof flashing is through soldering and flashing is employed in many areas, such as step flashing around the sides of the roof, chimney flashing, and saddle flashing around the top.
The outermost covering that superimposes the underlayment is the roof shingle or roof tile, which is basically exposed to all kinds of weather condition and this is why roof shingles are made up of sturdy materials, such as concrete, metal, or a good kind of wood, asphalt, clay, rubber, slate. Since the main function of roof shingles is to prevent any water leaking through the roof structure, they are usually designed as either flat or curved and installed by interlocking or overlapping with each other and they also come in many forms according to cost, weight, durability, color and style.