when I bought my house a few months ago I was aware of there being some damp in one wall - I have now had two quotes which have come back totally different and with different explanations as to why the wall is so damp.

One said it is pentrating damp with some sort of salt problem, the other that its rising damp with no salt. Both have recommended renewing the injected course, and tanking the inside - one with a plastic membrane and the other with some cement based thing

I am totally clueless so wary of being taken for a ride - any advice? :huh:

where is it?

Can we see pics?

its in the back wall of my dining room - there is no visible evidence of damp - no salt tide mark etc. however whenthey use a damp monitor thingy its off the charts. in fact the wall has lining paper on it but its not peeling off or anything

if the wall doesn,t feel damp and you can not see any signs of damp put the heating on make a cup of tea and try to forget about it ive had a couple of problems like this. its hard to make a solid jugement on it with out seeing it. ive got my own maintainace biz. if you.r still don.t know about it pm me back

What does it look like outside? any sign of salt, greenness or erroded mortar?

And can we see pics?

I'll take some pics tomorrow. there are no visible signs of damp inside or outside. the brickwork is painted but it all looks ok!

so how were you 'aware' of this dampness then?

those damp monitors with 2 pins are widely regarded as being totally useless. They would go off the scale if tested on dry glass

My next question was going to ba about the content of the wallpaper or wallcovering. If it's a metallic sheen paper, bob's your uncle :thumbsup:

Oh, and damp meters are well known as a scamming device for bogus builders selling damp proofing services :P

I had two surveys done when I was looking to buy the house - both highlighted damp in the wall. The internal wall just has lining paper on it

not sure if it was a two pinned device - he stuck it on the wall and moved it around some parts showed damp (red light) , others didn't (green)! Both companies are ones that are mentioned on the forum as being OK, however one took about 10 minutes to look at the problem and the other about 2 minutes. And as I say - the prices were very different!!

i've agreed to buy a house on city road, surveyor said damp, builder 1 said in one wall cost 500+vat, builder 2 said all alone one side of house cost 1200+vat, now looking for builders 3 and 4 when i move in and go with majority rules, what do u think?

i'm not paying for a damp proof company to quote me, that sounds like madness! im cheap and proud!

Be aware of these damp companies. It could simply be condensation.

Condensation can be really bad and leave massive damp patches and fungus growing so don't think it can't be that.

Is the room double glazed ?

Is the supposed damp area in the dinning room on the inside of an outside facing wall ?

Are there any covered up air bricks in the room ?

Is there any furniture in front of this supposed damp area ?

I haven't paid for a quote, although one company that I called charged just for looking at the problem. the room is double glazed, no furniture in front of it , and yes it is the inside of an outside wall. not sure about airbricks

It could well be condensation could do with a picture of the room / wall if you can ?

Building experts maintain there is no such thing as rising damp. And why with different diagnoses do they both suggest a new DPC to stop rising damp?? - cause its nice & expensive

The test for salts is to determine whether the moisture originates from your water supply - ie, leaky pipes, or from rain water or ground water.

If you cant see or feel any damp Im not sure why you would want to do anything.

Make sure any companies are a member of the BWPDA. (.co.uk)

ok so I have takee pics - where should I post them?