Block extension with external floor level above internal

[lookseehear]

We've started excavating for our single storey extension as part of a larger refurb/reorganisation. We're on the side of a hill, so there will be a retaining wall against the garden, with a pathway running around the outside of the extension. The path will connect to existing paths, therefore it will be above the internal floor level. We're expecting to construct the wall from two skins of blocks with 100mm insulation in the cavity and clad externally with timber.

 

How should the detail between the external skin of blocks and the earth under the path look? Does it just get painted in bituminous paint or do we include some kind of drainage gulley? Is there a standard construction detail here? See attached sketch if that helps.

[Dave Jones]

add a tray with weepers

 

[ETC]

Speak to Visqueen - they will do you a detail.

[ETC]

3 hours ago, Dave Jones said:

add a tray with weepers

 

Yep…..that’ll stop damp coming through the wall!😂😂😂

[Dave Jones]

why would it ? It's not in direct contact with soil so as long as cavity remains dry (tray) wil be fine.

 

stick to scribbling.

[ETC]

[Mr Punter]

On 19/09/2024 at 16:50, lookseehear said:

The path will connect to existing paths, therefore it will be above the internal floor level.

 

You will need to treat the room as a basement.