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Due to the potential for water accumulation within a wall, a ________________ is required behind any exterior siding and veneer.

a) vapor-permeable membrane
b) course of asbestos-fiber shingles
c) water-resistant membrane

Answer :

Final answer:

A water-resistant membrane is required behind exterior siding and veneer to prevent water accumulation, functioning like plant substances suberin and cutin that protect against water loss.

Explanation:

Due to the potential for water accumulation within a wall, a water-resistant membrane is required behind any exterior siding and veneer. This membrane functions similarly to natural water-resistant substances found in plants, such as suberin and cutin. Suberin is an impermeable, waxy substance present in the cell walls of corky tissues, which helps to prevent water and gas exchange. Cutin, on the other hand, is a substance that coats the wall of the cell exposed to the environment, helping to limit the loss of water within the plant to the atmosphere. In building construction, the synthetic water-resistant membrane serves the same purpose of preventing excess moisture from penetrating and potentially damaging the structure.

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