Sleeper Wall Extension

[aaront]

I need to add a couple of feet to a sleeper wall under the wooden floor in my kitchen.

How far down do I need to dig for the foundations to the wall? The wall itself is only 2 courses high.

 

[masona]

Normally the brickwork is bedded on the oversite concrete.If you have clay depending how soft is it,then I would've thought at least 6" should be okay and don't forget to put the dampcourse under the wall plate.

 

[aaront]

Under the wall plate - where do you mean?

I was going to put a DPC on top of the wall under the 2 by 4 I'm strapping to the top of the wall for the floor joist to sit on.

Do I need to put a DPC somewhere else?

Thanks.

 

[masona]

No that is correct,the 4"x2" sit onto the DPC then onto the wall.I might have confuses you here as the 4"x2" is also known as the wallplate!