Roof Shingles Manufacturer Defects

Blisters are another possible manufacturing defect.

Roof shingles manufacturer defects.

Over the last couple of years you may have seen local news coverage about alleged defects in common lines of asphalt roofing shingles produced by some of the country s best known manufacturers. Still it is in your best interest to be aware of possible manufacturing defects for asphalt shingles. The manufacturer will also adjust the warranty coverage for a roof based on their own observation of installation defects including virtually anything that did not completely follow the manufacturer s installation instructions regarding product selection underlayment nailing schedule condition of the roof deck flashing details roof ventilation details and perhaps other conditions such as mechanical damage from ice dams. Cupping and curling due to age can be distinguished from fishmouthing shown in the photo above caused by inadequate attic venting and building moisture.

The defect caused so many lawsuits to be filed against shingle manufacturers one in particular agreed to a settlement in february 2010. This is because the shingles do not meet industry standards for tear resistance. Another cause of this defect is simply the improper sequencing of the work and a general lack of understanding regarding the importance of this detail even though this information is printed on most bundles of roof shingles. Both these companies offer quality dependable roofing products but these two lines were apparently not up to their usual high standards.

The claims primarily involve two brands. This settlement resolves a lawsuit over whether or not organic roofing shingles manufactured by the defendant certainteed corporation from july 1 1987 through 2005 are defective and failed to perform as promised when installed on buildings located in the united states and canada. In 2009 the company was hit with a class action lawsuit alleging that its oakridge shadow 40 year shingles are defective in that they deteriorate far before the expiration of their warranty periods. Your manufacturer s shingle warranty is intended to provide coverage against product or manufacturing defects for a certain length of time usually 20 to 50 years ensuring that the manufacturer will make the necessary repairs or replacements to defective parts within that term.

Atlas roofing s chalet line and owens corning s supreme shingle. Defective shingles can crack because of thermal expansion and contraction. Property owners who experienced problems with certain owens corning roofing shingles may have legal recourse. Storm damage from wind and hail occur and need to be distinguished from defective asphalt shingle product or asphalt shingle installation errors.