Increasing the ventilation in my subfloor

Postby paulnug » Wed Jul 22, 2009 3:54 pm

I have damp in the sub floor of my 1930's bungalow. The original tar coating has perished in places and this is allowing damp in and also giving off a mild tar like smell. This appears to have been a long standing issue as a couple of the floor joists are damaged with wet rot and need replaced. There is no pooling and the smell goes away when we have a dry spell.

My first course of action is to increase the ventilation under the floor to help dry it out. I know the bricks don't line up so putting a rectangular air brick in will be awkward. Is it acceptable to use a coring drill (like those used to make the holes for extractor fans) and suitable plastic tube and vent cover or do I have to use the rectangular covers?
Rank: Labourer
Progress to next rank:
Posts: 3
Joined: Mon Mar 24, 2008 9:51 am


Simply Build It

  • DIY How to Project Guides

  • DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!


  • Related Topics