*UPDATE* Damp Floor

stuart45

If you've got a mastic asphalt covering, you need something like Ardex NA.

Anoneemoose

Thank you. I’ve just read about it and it does seem like it’s suitable.

poppellerant

The one concern that I'd have by sealing the floor, is that you could be pushing the problem to somewhere else.  You need to find the source of the leak, let the floor dry out, then seal the floor.  Personally, I'd give the floor a good scrub in bleach too.

Anoneemoose

poppellerant said:

The one concern that I'd have by sealing the floor, is that you could be pushing the problem to somewhere else.  You need to find the source of the leak, let the floor dry out, then seal the floor.  Personally, I'd give the floor a good scrub in bleach too.

Thanks. We don’t think there is actually a leak, though we’ll double check that of course. We think as there’s no damp proof protection on that bit, it’s rising up from under the floor. 

poppellerant

Anoneemoose said:

poppellerant said:

The one concern that I'd have by sealing the floor, is that you could be pushing the problem to somewhere else.  You need to find the source of the leak, let the floor dry out, then seal the floor.  Personally, I'd give the floor a good scrub in bleach too.

Thanks. We don’t think there is actually a leak, though we’ll double check that of course. We think as there’s no damp proof protection on that bit, it’s rising up from under the floor. 

I appreciate that, but the pictures of your sodden floor makes me suspicious of something more sinister that you don't yet know about.

Anoneemoose

poppellerant said:

Anoneemoose said:

poppellerant said:

The one concern that I'd have by sealing the floor, is that you could be pushing the problem to somewhere else.  You need to find the source of the leak, let the floor dry out, then seal the floor.  Personally, I'd give the floor a good scrub in bleach too.

Thanks. We don’t think there is actually a leak, though we’ll double check that of course. We think as there’s no damp proof protection on that bit, it’s rising up from under the floor. 

I appreciate that, but the pictures of your sodden floor makes me suspicious of something more sinister that you don't yet know about.

I’m not sure what though. We’re pretty confident there are no pipes there. There’s no sign of damp anywhere else, including the joining wall. It literally seems confined to this rectangle of concrete that’s not got a damp proof protector on it like the rest of the floor. 

We will of course explore it more when we get round to it.

Bendy_House

You say you don't think the rad pipes go under the floor? Isn't it 'obvious' whether they do - where do the pipes from the rad valves actually go - back through the wall? Down? Up? Sideways?!

Bendy_House

What's upstairs above the boxing? Is there an airing cupboard or similar? Can you see what pipes come out there?

Bendy_House

Does your boiler have a pressure gauge?

Anoneemoose

Bendy_House said:

Does your boiler have a pressure gauge?

Hi. to answer your questions:

1 - yes it is obvious - they go up into upstairs via the boxing in in the corner of the room that is in the pics on page 1. The rad is on the wall adjacent to the damp. When I say I don’t think there are any pipes there, I meant as in some that were once used and now aren’t. 

2 - above the boxing is nothing now, however it was the old water tank in an alcove cupboard, which were all removed when we had the back boiler removed. The pipes go up the boxed in bit and along the upstairs flooring (but under the floor boards) to the bathroom and then boiler via the landing

3 - yes we do have a gauge but it’s broken! However we don’t ever seem to need to adjust the pressure so I don’t know if that makes a difference.