What is an Asphalt Shingle Roof?
What is an Asphalt Shingle Roof, and how long do they last? Asphalt shingle products are manufactured from four essential components: asphalt, fillers, reinforcing mat and surfacing. The shingle and laminated strip shingles also use adhesives to provide self-seal strips. Asphalt shingles usually last up to 25-28 years, depending on the weather and care circumstances. Here are the asphalt shingle materials.
Asphalt and Fillers
The weatherproofing material used to manufacture asphalt shingles is asphalt flux. Asphalt flux is obtained from the fractional distillation of the petroleum refinishing process. The asphalt flux is further refined by air blowing to produce roofing-grade asphalt at an oil refinery or shingle manufacturing plant and then is delivered to an asphalt roofing material production process. Asphalt is the primary coating and weatherproofing material for an asphalt roofing plant. Mineral additives, or “fillers,” are added to coating asphalt to stabilize the bitumen. Also, to reduce its natural flow characteristics and increase fire resistance and make it more suitable as a coating material. Some manufacturers use asphalts that have been modified with various polymers, and the most common polymer currently is styrene butadiene styrene (SBS).
Reinforcing Mat
All asphalt shingles are reinforced with a mat or scrim designed to support the asphalt. So reinforcing mats are composed of thin glass fibers or polyester fibers. These fibers may be continuous or random and are bonded together with plastic binders or resin.
Surfacing
Asphalt shingles that most commonly surfaced with coarse mineral granules. Mineral granules are made from natural-colored rock or rock granules colored by uremic-coating processing. And produced to meet ASTM D451 Standard test method. Ceramic granules are currently the most commonly used coarse mineral surfacing.
Mineral Granules
Mineral granules are used for the following purposes:
- To protect an underlying asphalt coating from the degrading effects of ultraviolet light and weathering. Therefore, the granules must be opaque, graded adequately for maximum coverage, and densely applied over the coating-grade asphalt surface.
- Improve asphalt shingle’s resistance to fire originating outside, although mineral granule surfacing alone does not guarantee acceptable fire-resistance classification.
- Provide a greater variety of design possibilities and aesthetic choices because of their wide range of texture, color, and color blends.
- To add weight, which increases wind resistance
Self-sealing Strip
Commonly, asphalt strip shingles and laminated shingles contain adhesive self-sealing strips. A self-sealing strip gives an asphalt shingle increased wind resistance by securing the leading edge of the shingle. A self-sealing strip is generally composed of asphaltic-based, heat-sensitive adhesive designed to adhere to the overlying or underlying course of shingles. A modifier, similar to SBS polymer-modified bitumen, may be added to the adhesive to make it tackier, allowing the adhesive to seal at lower temperatures.
If you have any questions on any asphalt shingle materials or any roofing questions in general don’t hesitate to contact us at https://planetroofingfl.com or call us at 954-600-1462.
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