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afj24
Apprentice
Posts:
6
Joined: Tue Mar 27, 2007 12:46 pm
Post by afj24 »
Fri Mar 30, 2007 2:54 pm
Helo,
I am building a cavity concrete block wall on top of an existing stone wall to form a flat roof.
What would I require regarding damp course, cavity tray, insulation etc?
Thanks in advanced
Alan Jones
thedoctor
Posts:
2530
Joined: Sat Apr 08, 2006 12:15 pm
Post by thedoctor »
Sat Mar 31, 2007 7:58 am
Horizontal Damp course only required to stop water rising up through blocks and if you are more than 150mm off the ground when you start your cavity wal its not required. A cavity DPC is only inserted over windows or any opening where water can potentially get into the cavity. If the wall id continuous up to the underside of the roof, no DPC is required. The insulation required depends on the building and its use, talk to your local building inspector re this.
afj24
Apprentice
Posts:
6
Joined: Tue Mar 27, 2007 12:46 pm
Post by afj24 »
Mon Apr 02, 2007 8:37 am
THANKS FOR THE REPLY-would you recomend cavity tray or weep holes?
