LeakBarrier MS300 Ice and Water Armor is a glass fiber reinforced, self-adhesive modified bituminous roofing underlayment for use under slate and asphalt shingles. Mineral granules on the upper surface provide enhanced skid resistant properties.
Since the sixties, “engineered polymers” have become a cornerstone of modern technology. “Synthetic underlayment” is made from polymers that are engineered and optimized for use as roofing underlayment.
The polymer is only the beginning. It is typically procured from a company that specializes in the production of engineered polymers. Engineered polymers are then delivered to the underlayment factory in the form of plastic pellets, which are fabricated into synthetic underlayment products.Read more
There is more to scrim than meets the eye.
The scrim is woven from polypropylene threads or filaments. Scrims are used in everyday life to bag oranges, grapefruits and onions in the food processing industry. One can see them at local grocery stores or in the refrigerator.Read more
The roofing industry initially was reluctant to adopt the new synthetics. By way of comparison, the industry literally had decades of experience with modified bitumen. As a result, residential roofing contractors were eager to adopt the premium self-adhering underlayment and these were readily accepted by the industry as a premium underlayment.
For residential roofing, it has been argued that the underlayment need only shed water because of the steep slopes of the roof. And furthermore, the primary roof (whether shingle, tile, metal or other material) protects the underlying material from ultraviolet radiation.
Such arguments led to the idea of using an extremely thin layer of plastic as an underlayment. But experience with the synthetics was lacking. Synthetic underlayment gained notoriety as being unsafe because the sheets would become slippery when wet. Especially the early versions were deemed unsafe and hence many contractors preferred to use familiar materials.Read more
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