Renton Roofing: Article About Asphalt Shingle Basics
Asphalt shingles are popular for good reason. They offer homeowners an amazing array of styles while remaining simple, economical and durable. It is little wonder asphalt shingles are used in around 2/3 of Renton roofing projects. They are the easiest type of roofing material to install, which will save contractors time and homeowners money. Like any big purchase, it is a good idea to learn as much as possible about the product before shelling out hard earned money.
All asphalt shingles share the same basic structure. They begin with a backing material or mat woven from either fiberglass or cellulose. Fiberglass is by far the most common in modern shingles due to its resistance to rot. A layer of asphalt is applied on top of the backing to provide waterproofing. Finally, a layer of aggregate is applied to the top to protect the asphalt from UV radiation and provide the shingle with texture.
Shingles are typically divided into three grades by manufacturers. These may be called standard, premium and luxury, though contractors and many others simplify this to good, better and best. The grade of shingle will determine the durability, cost and styles available. Higher grade shingles generally have a longer life expectancy and are available in more varied styles. Standard grade shingles are mostly of the three tab design and are the thinnest.
The roofing experts at Chase Construction of Renton WA can assist you with any questions regarding residential roofing or roof coatings.
High grade shingles are sometimes referred to as dimensional or architectural shingles due to the three dimensional texture they give a roof. These shingles are up to three times as thick as standard three tab shingles. The added weight must be considered when upgrading or installing them over old shingles. A good roofing contractor can determine whether a roof is structurally sound enough to support the added weight.
The National Roofing Contractors Association advises contractors and consumers alike to only use shingles that meet international standards. The two sets of standards for shingles depend on the type of mat used. Fiberglass shingles should meet ASTM D3462 standards and those with cellulose backing are compared to ASTM D225 standards. These specifications measure things like wind resistance, impact damage, fire resistance and tear strength. Products meeting these standards will have notation on the packaging.
Most certified roofing contractors only use quality shingles from major manufacturers. Be sure to check with the contractor to find out what factory certifications they carry as this can affect the warranty offered. Factory certified contractors are familiar with the manufacturer's full line of products and will be able to help narrow down the choices.