Traditional Culture Encyclopedia - Traditional festivals - What is the function of laying sbs waterproofing membrane under asphalt shingles?
What is the function of laying sbs waterproofing membrane under asphalt shingles?
The function of this lay of coiled material is waterproof,
Because asphalt shingles can't be used as waterproof layers alone.
Asphalt shingles are generally used in sloping roof waterproofing projects, and form a waterproof layer together with waterproof cushion. Because of its light weight and convenient construction, asphalt shingles are increasingly favored by various sloping roof waterproofing projects.
SBS coiled material is generally not used under asphalt shingles.
There are two reasons: first, the price is higher than that of the cushion layer, which is unnecessary. Second, it is airtight, which does not meet the requirements of ventilation for most sloping roofs.
However, because the cushion is not accepted by most people in China, it is not unreasonable to lay a thin SBS coil.
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