No gap between bottom of cladding and waterproof deck

There is no gap (or not enough gap) between the bottom of the cladding and a waterproof deck. (Under E2/AS1 a gap of at least 35 mm between the cladding and the deck surface (measured at the highest point on the deck surface) is required to allow draining and drying from behind the cladding and to prevent the bottom of the cladding absorbing moisture.) 

Causes

It was not installed with a sufficient gap when constructed

Cause

It was not installed with a sufficient gap when constructed

Repair

  • consult an experienced registered building surveyor for advice on the options available

  • after any repairs are made, allow the cut bottom edge of the cladding to dry thoroughly and then paint to provide a seal