On 13 Nov, 19:25, "js.b1" wrote:
I would have thought tanking is better.

Apply tanking sheet to the wall & floor.
Tanking sheet is a thick plastic sheet with deep dimples which raise
the sheet off the wall. It is fixed by plastic plugs with integral
seals so as to not create a point of weakness re damp penetration.

Pump is fitted.
Pump is fitted at the lowest point with a float switch which pumps
away water as necessary.

I'm not sure how you fit them to rough wall surfaces.

yes another possible method - should be lots on uk.diy if messrs
Google's search is operational....

http://www.sovchem.co.uk/ has some stuff but I've never used it and
can't recommend.


I assume this is not living (sleeping) accommodation because BR apply
and they can be onerous - like is the barn wall that backs onto the
road properly supported, re foundations and capable of withstanding
the road. Underpinning is an exercise in mixing a lot of bags of
concrete to fill a block a few feet wide at a time (some builders
prefer to dig the trench in one go - and promptly fill it with the
original building... just imagine if programmers did Civ Eng... Now
why did it do that... :-)


how far can BCOs "insist" -after all it's existant i.e. it *is*
already potentially holding the road up and we are talking of creating
a drier area inside of it without necessarily touching it..??

JimK