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Damp Proofing Question
Is it true that you shouldn't drill a hole through the wall of a timber framed house due to piercing a damp proof membrane?
I have been advised that during a boiler replacement I am getting quotes for at the moment the engineer shouldn't drill a hole in the outside wall of the house due to a damp proof membrane. One engineer said this, but the other said that he had never heard of it. Before I bought the house, sky and bt engineers had drilled holes for sky dish and a second phone line.
Is this true? What are the risks of doing it ? And should I take any action due to the holes that have previously been made? It's an end terrace, would any membrane run through the entire terrace and therefore compromise everyone (4 houses)?
Thank you for any advise you can give.
I fitted boilers in timber framed buildings (usually with a brick outer skin), care should be taken not to damage the damp proof mebrane ,i usually drill a small pilot hole from the inside , exspose the brickwork outside and peel back membrane,then reseal after, not to difficult. Dont worry there are many unsealed holes in these types of buildings
Answered 25th Jan 2012