Dallas Roofing: Article About The Necessity Of Underlayment
Whenever a homeowner is building a house or putting on a roof, the topic of underlayment tends to arise. Many homeowners wonder what underlayment is and if it is even necessary. A homeowner may wish to speak to a Dallas roofing professional for advice on underlayment.
Underlayment is a protective layer of material that is placed between the roof shingles and the roof deck. This layer is generally made of roofing felt, tar paper, fiber reinforced roofing felt or synthetic material. In recent years, roofers have generally moved away from using roofing felt and are using synthetic underlayment more often.
Underlayment is recommended by the National Roofing Contractors Association. It is often required or recommended by local building codes, and manufacturer roof warranties, regardless of whether the roof is asphalt shingle, clay tile, fiber cement, slate or cedar. Underlayment is almost always recommended with asphalt shingle roofing.
Many warranties and roofing fire classifications are considered void if underlayment is not installed. It is usually required in order to receive the appropriate UL fire rating because shingles are tested with underlayment.
During the installation of a roof, underlayment protects the roof deck from the elements. It is installed rapidly to ensure protection in case any inclement weather arises during the roofing process. Underlayment, particularly synthetic, gives roofers a footing, especially with high slope roofs.
The roofing companies experts at Total Roofing of Dallas can assist you with any questions regarding roof maintenance or residential roofing.
One of the biggest reasons for underlayment is that it protects the roof deck and building structure from mishaps caused by weather. If shingles blow away, underlayment protects and provides a temporary roofing. Underlayment minimizes the likelihood of water and moisture leaking into the house structure. It also allows moisture to be released from inside the house. Underlayment offers protection when ice dams are created on the roof and water backs up over the shingles.
Underlayment is a backup means of draining water off the roof during inclement weather. Water can penetrate the roofing membrane at certain points. Underlayment sends the water away from joints, seams and other places in the roof deck.
Underlayment protects the roofing from resins that bleed out of the sheathing. Resins from roof decks can have a negative impact on roof shingles. It also keeps the chemicals in the shingles from bleeding onto the roof deck, which can cause expensive repairs.
One reason for underlayment is that it allows sheathing to move without causing damage to the roof structure, because shingles may stick to sheathing. Roof systems move, whether because of windy weather or expansion and contraction.
In terms of the roof's appearance, underlayment hinders any unevenness in the roof sheathing from affecting the shingles. Thus, the shingles have a smoother appearance. It also serves as a heat and sound insulator.
Underlayment fulfills various functions, some of them more important than others. For most roofing systems, it is necessary. If a homeowner has any questions about underlayment, a roofing professional can answer them.