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__________ is special material used to make sure that no moisture leaks in those areas of a roof that are particularly vulnerable to penetration.(a) Dampers(b) Flashing(c) Ceramic(d) WaxThe question was posed to me in exam.This interesting question is from Components in section Important Building Components of Construction & Building Materials

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Right answer is (b) Flashing

For explanation I would say: Flashing is a STRIP of metal used to STOP water penetrating the junction of a roof with another surface. Areas where flashing is commonly used: where ROOFS meet walls, wherever the roof is pierced by a Chimney, SKYLIGHT, air or plumbing vent.



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