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Class B TradeFinish Tradesmedium20% of exam part

A shower accessory is screwed through tile and the waterproof layer without the required penetration seal. Water reaches the wood backing. What issue needs correction?

Correct Answer

C) Water entry at the mounting penetrations and protection of the backing.

Unsealed mounting penetrations can admit water to moisture-sensitive backing. Correct waterproofing and attachment using the actual system’s approved accessory detail; adding a hook does not justify compromising the waterproof layer. Source: https://assets.schluter.com/asset/570120892212/document_i2tt9fh4sp2n562jmirhppbv4o/shower-system-installation-handbook.pdf?content-disposition=inline

Answer Options
A
Only the tightness of the hook, regardless of the water entry.
B
Only the visible tile appearance, leaving the penetration unsealed.
C
Water entry at the mounting penetrations and protection of the backing.
D
Only a larger accessory cover, without sealing the water path.

Why This Is the Correct Answer

Unsealed mounting penetrations can admit water to moisture-sensitive backing. Correct waterproofing and attachment using the actual system’s approved accessory detail; adding a hook does not justify compromising the waterproof layer. Source: https://assets.schluter.com/asset/570120892212/document_i2tt9fh4sp2n562jmirhppbv4o/shower-system-installation-handbook.pdf?content-disposition=inline

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