Extension wall with partial earth

[noseall]

But succumbed to a deal with the a builder doing all the main parts of the work.

Still keen to do any other aspects of the work myself.

Oh God! Worse scenario alert!!

 

[^woody^]

All tanking will fail, and 100% quality can't be guaranteed so is designed to have a back up. Coating the back of a wall is not a back up for when the front fails. Especially when it can't be accessed for repair when it fails.

Does the BCO offer a 25 year warranty with his design? I'd want to see the warranty on a house sale survey.

 

[iwanttodiy]

Understandably BCOs designs are not necessarily correct, however if BCO are happy to pass what they suggested, I suppose I have to take that route?

At a later stage, I’ll cut back the concrete slab on the raised garden, excavate and install a waterproof membrane on the exterior wall, followed by a geodrain membrane which links to a French drain.

My priority now is to let the current builders complete the mandatory elements of the build, so they can go away, before they start whacking on overpriced extras.

 

[freddiemercurystwin]

I'd have a Google for RIW and others for tanking membranes or really unless meticulous attention to detail and the construction is applied then a drained system like Newlath may be more appropriate which can be more forgiving. But as previously mentioned a whole approach is required not piecemeal like this.

 

[iwanttodiy]

This I believe is similar to the detail i mentioned above and as suggested by BCO.

 

[freddiemercurystwin]

No that requires an external drain.

 

[iwanttodiy]

If I link a geodrain membrane to a French drain, is that not the same?

 

[^woody^]

More or less. You'll need to do it before Brexit though.