Professionally nosey Posted Sunday at 10:39 Share Posted Sunday at 10:39 (edited) Hi I'm currently building a small side extension. Block outer leaf as it will be rendered. I'm going to cover the cavity during construction, but inevitably some rain water will get in. How does it escape? Are the blocks slightly porous or should i put in weep holes below DPC. Thanks Sorry to add, it's engineering bricks below DPC Edited Sunday at 10:48 by Professionally nosey more info Link to comment Share on other sites More sharing options...
joe90 Posted Sunday at 11:00 Share Posted Sunday at 11:00 Should not be a problem as ground is usually damp/wet at foundation level. Yes you could put In weep vents below DPC but frankly I think it’s a bit OTT but if it makes you feel better then crack on. 1 Link to comment Share on other sites More sharing options...
MikeGrahamT21 Posted Sunday at 15:31 Share Posted Sunday at 15:31 Engineering bricks are definitely less porous than blocks or other bricks, but will allow moisture to pass over time. As @joe90 said, it’s going to be pretty much permanently wet below ground anyway so I wouldn’t worry too much. 1 Link to comment Share on other sites More sharing options...
Professionally nosey Posted Sunday at 19:05 Author Share Posted Sunday at 19:05 Great thanks very much both of you. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now