Water leak

by Andy
(Peterhead)

Can dust affect the mastic and cause a window (heki light) to leak?


Generally, I would say no. When mastic becomes old, it does become hard and brittle and does crack on the surface but providing the underneath layer is okay then it should not cause any problems. If you have a leak, it could be that it was not sealed correctly and will have to be re-done.

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