They are the first defence in the waterproofing of any building. They take the full force
of torrential downpours of rain in severe rainstorms and provide protection also from
wind driven rain.

Consequently the detailing of flashings, penetrations and guttering is very important.

Sometimes adverse weather conditions can penetrate past acceptable detailing or cause
details
to fail.

Roofs also bare the full brunt of the elements causing over time the deterioration of
waterproofing materials, allowing water to then enter the roof cavity.

Common Problems:

Internal gutters leaking
Skylights leaking
Broken roof tiles
Long run roofing iron detail incorrect
Torch on membranes detail failing
Liquid and sheet membranes punctured
Corrosion of metal roofing materials
Flashings failing in severe conditions

Solutions can involve:

Application of liquid and sheet applied membranes
Replacement of corroded flashings
Modification of existing detailing