Roof Replacement Terms and Definitions

Unfortunately, we have yet to develop a roofing system at this point in construction history that will last forever. And each of us will have to deal with a roof replacement more than likely. Visit us on Roofers In Brooklyn.

It happens that the roof is the most important structural component of any building after all. Without a weather-tightened, standard roof, all other building components will be lost in a short time. Materials for paint, drywall, furniture, and flooring are clearly not designed to withstand Mother Nature. Indoor spaces, and individuals, need protection from the elements.

Here are some words for roofing which may be helpful during decision making:

Square-A measurement unit widely used in roofing and siding equivalent to 10 feet by 10 feet or 100 square feet (1 square = 100 square feet); Most of the roofing materials are priced per square, and roofers usually measure costs and prices based on the total square number.

Decking or Sheeting-The flat material layer that is attached to the joists on the roof. Many older homes and buildings are decked with wood planks. Most new residential buildings have a 4 foot x 8 foot sheet (sometimes called sheeting) plywood or orient strandboard (OSB) deck. The most common roof decking thickness used today is 7/16.’ Underlaying and shingles are applied to the roof deck.

Asphalt shingles — Organic shingles that were withdrawn in 2006 due to poor performance and many class action lawsuits. The word asphalt shingle is still sometimes used today as a misunderstanding. Many roofers refer to asphalt shingles after 2006 when the correct technical term is actually shingle composition.

Shingle composition-Modern shingles made from a mixture of asphalt / fibreglass. The shingle’s asphalt / fibreglass body is covered with a protective granular wear-layer.

Granular Wear-Layer-A composition shingle’s ceramic top coating provides rigidity (protection from hail, debris, and punctures), UV protection, and also provides colour.

Architectural / Laminated / Dimensional Shingle-Both words apply to the modern common shingle made of multiple layers of (laminated) asphalt / fibreglass material providing added strength , resilience and a shake-like look.

Underlaying-The layer of material added to the roof cover prior to the installation of shingles. The most common underlaying is felt (tar) paper in 15 or 30 pound varieties. There are many new synthetic products available that are made of waterproof / breathing material (similar to house wrap).

Ice and water or snow barrier — Underlaying made with adhesive on one side and used to shield the roof eaves and valleys from ice dams and water reservoirs. The construction of ice and water barrier is a crucial step in avoiding damage to the roof by water and/or ice from the gutters and under the shingles.

Roof Exhaust Vent-The outflow space left open on top of the roof to ensure sufficient ventilation and release of hot air. Roof vents may be the older style box type, power vents or a modern ridge vent system. The configuration and design of the roof can decide which form of ventilation can function best.