Griswald wrote:
Thats not bad with the door then.
On the leak at the back window. Water may have needed time to penetrate, and work its way along to where it is now showing. that would indicate a small leak, thats managed to cross the inner cavity of the wall, if there is one, and then through the wall to where it is showing now. Around the window on the outside face of the window, where the concrete reveals hit the window face, is a possible place where it could leak. Normally on new window refits into a house, they leave on the existing reveals, and fit the window, and then seal here with a small bead of silicon sealent. Over time this breaks down, and it may allow water penetration around the window.
Have a look at it, and if you are i doubt, remove it, and buy a tube of silicon sealent, and a mastic gun, and reseal in dry weather.

griswald[/quote]


I noticed yesterday that below the window a piece of pebble dash is missing so wonder ether this could be leak. I'll check the window wk end this could be the reason why the wall has crumbling plaster on it.

Gris cheers mate.

Anyone used one of these products to sort there own dampness out?


www.twistfix.co.uk/products/damp-proofin...7F_7ACFQwjfAodMxxFPQ

nirvana wrote:
The last thing you want to do is to start spending loads of wedge on a solution , when you dont really know what the problem is. You know you have wtaer ingress somewhere in your home. Thats all you know.
You dont know whether its due to leaking gutters, leaking flashing, external craks, pointing, broken down dpm course ect,ect
Large patches of water on external walls can either be any of the forementioned problems, or something totally different. A chemical dpm layer, will fix a broken dpm membrane, and thats all, it wont do anything else for anything else. If you want a self assessment of what problems are occurring where, and opinions on it, then you are going to have to put up pics, or video clips. Doing a survey across the internet, is tricky but not impossible.
As you are currently involved in the pointing, I would finish that before I spend money on chemical damp solutions. Chances are , you wont need them. You would have to assess the walls anyway before using them.

You may have damp patches in rooms, that are not the result of water ingress, but condensation. And its easily mistaking one problem for the wrong reason. A simple test to find out whether moisture is coming in from the outside, or whether its the result of in house moisture content, is to do the following.

Stick a piece of tinfoil, about 300mm square onto the damp area you are concerned about, by applying cellotape around the edge of the tinfoil to the wall. Keep an eye on it for a few days, and inspect it to see if there is any moisture, like wiping steam from a window, on the room side of the tinfoil. After 4-5 days, take the foil off and inspect the side of the foil that was facing the wall. You should be able to ascertain which side of the foil has the moisture. This will tell you whether its damp due to condensation, or water ingress.
Another method, is to purchase a book of litmus test papers from a store dealing in damp products, and stick them to the wall. They will turn a certain colour after a couple of days, and identify the water problem. No use injecting chemical dpm for a condensation issue ect,.

griswald

Griswald wrote:


Thanks Gris your giving me alot of valuble information here .