The Brew Cabin

Posted: **Sat Nov 03, 2007 3:00 pm**

Does a patio allways have to be 160mm or further below DPC? is there a solution to this rule if a flush inside outside floor level is required

Posted: **Sat Nov 03, 2007 3:15 pm**

it is recommended to be 150ml below damp. if you go to the main index under "DPCs" it is all explained.

Posted: **Sat Nov 03, 2007 3:24 pm**

Thanks Sean, I know I am breaking all the rules regarding DPC's. I am putting in some folding sliding doors to the outside of the house and wanted the inside to be flush with the outside. Is this a complete no go or are there any solutions.

Posted: **Sat Nov 03, 2007 3:30 pm**

complete no go. you would be a fool to break the 150 rule.lol

Posted: **Sun Nov 04, 2007 11:12 pm**

Well not really a complete no no; it depends how you do it. I also have folding sliding doors going outside, but mine go out onto a wide step (see main site for info re steps and DPC) so the effect is that the levels remain the same as you move out. However, the step goes down on to the patio and it is 150 below DPC.

Posted: **Mon Nov 05, 2007 12:56 pm**

liner drains near threshold and special rainbars could be a possibility, bit 150 below dpc is optimum

Posted: **Mon Nov 05, 2007 1:21 pm**

I have put my driveway in above DPC I think it will be ok, if not I will have the wall pumped above to create a new DPC, do no comprimise design!

Posted: **Mon Nov 05, 2007 5:22 pm**

red-star wrote:I have put my driveway in above DPC I think it will be ok, if not I will have the wall pumped above to create a new DPC, do no comprimise design!

eek!!

LLL :O

Posted: **Mon Nov 05, 2007 6:37 pm**

I think you can pick a second hand dehumidifier for about Â£60 to Â£70 quid from E-bay

Posted: **Mon Nov 05, 2007 11:29 pm**

chemical dpc is very hit and miss. you will undoubtably have regrets when the damp penetrates

150mm is a minimum figure and should not be compromised imho:rock:

Posted: **Wed Nov 07, 2007 10:02 pm**

totaly depends on the width doing lots of site work with level threshold

Posted: **Thu Nov 08, 2007 12:02 am**

its ok if you are providing alternative dpc...

Posted: **Mon Nov 12, 2007 3:36 pm**

Paving may come up to dpc height at a threshold to provide a level entry for disabled access, but elsewhere it should be kept a minimum of 150mm below dpc (Building Regs Part C).

Paving shuld never, ever be laid to a level above dpc unless there is some form of tanking/waterproofing used.

The Brew Cabin

Patio level and dpc level