- Joined
- 16 Oct 2004
- Messages
- 31
- Reaction score
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- Country
Hi all,
My double Garage disaster project is almost coming to an end at last, I may even be lucky to get it finished by xmas.
Unfortunately the large concrete base was not levelled properly and I now have to lay a 2" screed all over, yes the base is out by up to 2 inches
Ive ordered enough Sharp sand and cement to do the job but im unsure as to what preparation needs to be done. So far I have been told 3 things:
1: Lay a builders polythene dpc everywhere before sreeding.
2: Use a 'blackjack' style bitumen paint everywhere instead.
3: Don't bother with anything and just screed straight on to existing concrete base.
Also, I have seen builders using thick insulation boards called 'cellotex' ? on a base and then screeding over the top. Im sure they know what they are doing but it seems like a really weird way of laying a very important screed. What if the cellotex moves or crushes, surely the screed on top will eventually crack ?
Cheers
My double Garage disaster project is almost coming to an end at last, I may even be lucky to get it finished by xmas.
Unfortunately the large concrete base was not levelled properly and I now have to lay a 2" screed all over, yes the base is out by up to 2 inches
Ive ordered enough Sharp sand and cement to do the job but im unsure as to what preparation needs to be done. So far I have been told 3 things:
1: Lay a builders polythene dpc everywhere before sreeding.
2: Use a 'blackjack' style bitumen paint everywhere instead.
3: Don't bother with anything and just screed straight on to existing concrete base.
Also, I have seen builders using thick insulation boards called 'cellotex' ? on a base and then screeding over the top. Im sure they know what they are doing but it seems like a really weird way of laying a very important screed. What if the cellotex moves or crushes, surely the screed on top will eventually crack ?
Cheers