Basic Components That Comprise the Roofing System
Owning a house requires a lot of responsibility to maintain it in good condition and part of that responsibility is having a better understanding about the basic structures in the house, so that gaining as much information may help you settle well in discussing major repairs or additional improvements in the house with the contractor.
A knowledgeable homeowner on the basic parts of a home will see to it that the right kind of home materials should be considered for his home to be in good condition, such as for example when it comes to the roofing system, having an idea about the basics will certainly allow him to choose the right roof materials for his home. The roof structure is made up of three basic components – 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. Most common roof underlayment are made up of any of these main types, but are basically composed of asphalt, these are: the felt paper asphalt underlayment, which is basically made up of asphalt, cellulose, and polyester; the synthetic underlayment which is a combination of the asphalt underlayment with fibreglass to make the material stable and resistant from the wear and tear; and the rubberized underlayment, which is still made up of asphalt and with combination of rubber polymer and with a special design that has a sticky, protective back membrane that functions as a waterproof sealant between the roof deck and the underlayment.
It is not enough to install underlayment in the roofing system since there are areas in the roof structure that can only be protected and sealed well by using roof flashing, which functions as a sealer between roof joints to prevent water leaking through the roof. There are different kinds of roof flashing materials to choose from, but the most common is the galvanized sheet metal, while aluminium and copper comes in a close second choice. Most roof flashing materials are soldered into the areas where flashing is needed most and in these areas, different ways of flashing is introduced, 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. Roof shingles are usually designed as either flat or curved tiles that interlock or overlap with each other so that water is unable to penetrate through it and there a wide array of choices depending on the cost, weight, durability, color and style.