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as you may have seen in another post I have got a workshop (single skin conc. block) that is leaking. It seems that painting it will help, but before I do that I'd like to do something to smooth it out a little as currently the blocks are very rough and it's probably going to be a right cow...

yes there is a membrane under the slab. Thanks for the help.

you may be right about the condensation, but I can see that water is soaking through the block by the way they look darker around the edges. It's really annoying as I have got loads of tools in there that are going to end up knackered in no time at all....

Hi guys, I have just had a concrete block workshop built, and it's getting pretty damp in there. The guy who built it did warn me that a single skin block wall would let water through. So I'm not really suprised to find the walls are soaked on the inside after the rain we've been having...

Thanks for your replys guys but the question about knocking off the fitting was a joke :D Have given it a few goes at tapping it and nothing is moving, I'll just bite the bullet and fit a new valve (or once it's all drained down have a look to see of I can free it internally) Thanks for...

aaah, percussive maintenance :lol: On a completely unrelated subject.... how hard is it to knock a TRV compression fitting off the end of the feed pipe, with say, a spanner? :wink:

How much pressure should the TRV pin need to close it? (or spring back with) Just to give some background... I have got a problem with a rad not getting hot, it has been switched off until recently and now I have opened up the TRV but no heat, although the feed pipes running underneath are...