Granulated Overlay Roofing

Granular cap sheet roof.

Granulated overlay roofing.

Manufacturers also may embed small granules into the top of the membrane to add fire resistance color options ultraviolet uv radiation protection or other distinctive characteristics. Cap sheet is a rubberized asphalt roll roofing product. Modified bitumen coating is one of the most popular solutions for protecting a flat or nearly flat roof. Ac cap sheet consists of a proprietary modified asphalt a tough fiberglass reinforcing core and a granular surface to protect against uv weathering and physical damage.

When you overlay a new roof you attach the new shingles or other roofing material to the existing roofing material. The old roof is not so much being replaced as it is being covered over with a new roof. The glass base resists the effects of moisture on the roof system while the aesthetically attractive granule surface provides an ultra violet protective surface and requires no additional surface coatings. Surfacing for built up roof systems include aggregate such as gravel slag or mineral granules glass fiber or mineral surfaced cap sheets hot asphalt mopped over the entire surface aluminum coatings or elastomeric coatings.

It is a liquid applied thermoplastic sebs rubber roofing system formulated to provide a durable vapor barrier. There are several benefits to a granulated roofing surface over a smooth surface. Gaf tri ply app granule cap sheet 3 3 ft w x 32 25 ft l 100 sq ft white roll roofing. Another perk is that you can find granulated roofing in various weights.

The pros and cons. A roof cap sheet is fairly heavy because of the mineral surfacing and is widely referred to as 90 pound roofing in north america. The granules give a roof color making it more attractive. Overlay is when your existing shingle roof is not removed and covered over with a new shingle roof this is a money saving option presented to many homeowners when it is time for a new roof.

They consist of fiberglass mats coated with mineral granules for strength and durability. This may not seem like the obvious way to replace a roof but many homeowners choose this method for some significant advantages. It provides superior resistance against the elements and damage to the roof as well as adding extra benefits like flame resistance. A mat of fiberglass polyester or other material is often used as a sturdy core for torch down roofing membranes.

One of the main advantages of a granulated roofing surface is cost as it s considerably cheaper than a smooth surface. The system cures to form a seamless rubber membrane which not only waterproofs and protects the roof but also offers 82 reflectivity to reduce thermal movement and cool ambient air temperatures at ac intakes.