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Question:

The newly bought rough roof is the roof but there is a section of the black bar on the ceiling that is not waterproof

The newly bought rough roof is the roof but there is a section of the black bar on the ceiling that is not waterproof

Answer:

(SBS) modified asphalt waterproofing membrane impregnated and coated with styrene-butadiene-styrene (SBS) thermoplastic elastomer modified asphalt. Polyester felt, fiberglass felt and Glass fiber reinforced polyester felt for the fetal base, the upper surface covered with polyethylene film, fine sand or mineral sheet material made of isolation materials can be curled sheet waterproof material.
Is likely to be waterproof construction and product quality effects, it is recommended that you choose the East Rainbow waterproof products and standardized construction team, the East Rainbow is the best quality waterproof listed companies

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