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Water penetration due to inadequate specification of tanking material.

Inadequate perimeter insulation.

Water leakage through tiling due to omission of waterproof membrane.

Incorrect falls to changing rooms and showers.

Major roof problems including water penetration and inadequate vapour control.

An absence of weatherproofing of louvres and thermal breaks in the glazing and a failure of doubleglazed units.

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