dpc and dpm


Postby BillySilly » Thu Oct 01, 2009 9:37 pm

Hi
I am building a largish shed using 215mm celcon blocks. I have laid the foundations and have trench blocks up to the level of the dpc. I have laid the concrete slab on hardcore-blinding layer of sand-dpm. Some elementary questions on what to do next!
1 Is the preferred order mortar-dpm-mortar-dpc-mortar-first row of blocks?
2 Doesn't this make a rather thick sandwich (especially at the corners with lapping of the dpc): how thin should each mortar layer be?
3 I know to lap the dpc at the corners but what do I do with the dpm at the corners? Do I bunch or cut it and if I cut, how?
4 Do I trim the dpm and if so where?
5 Do I put down the whole first layer of mortar on one side of the building and press the dpm onto it, or go on to lay the second layer of mortar and dpc in one session? Do I then go on in the same session to lay the third layer of mortar and first row blocks on the dpc or wait until the first 2 layers have gone off?
6 What do I do with the dpm where the garage door opening is?
Thanks
BillySilly
Posts: 2
Joined: Thu Nov 13, 2008 10:42 am

Sponsor

Simply Build It

Postby TheDoctor4 » Fri Jun 25, 2010 6:56 pm

Let DIY Doctor help you to find quotes from vetted and trusted tradesman local to your area. Visit our Find a Tradesman page: http://www.diydoctor.org.uk/find_tradesmen/
TheDoctor4
Posts: 16777215
Joined: Tue Jul 24, 2007 9:12 am
Location: Somerset in the UK in Shepton mallet


Display posts from previous
Sort by
Order by