Damp On Second Floor Wall

Now a small damp spot of a light brownish colour is showing in one corner half way up the wall.

Damp on second floor wall.

Skirting boards and floor boards rot. Damp down low rising damp if you have damp patches bubbling paint crumbling plaster or powdery deposits on wall surfaces close to the floor rising damp is probably the culprit. A white powder like substance on the wall left by soluble salts dissolved in the water tide marks rising up the wall if the problem is coming up from the floor you may notice floor coverings lifting up. Must be from outside.

Hack off all old plaster to at least 300mm clear of all signs of damp or salt and at least 1 metre above ground floor level use a meter to test the walls and remove plaster at least 300mm above the highest level that readings can be obtained. Plaster flakes away feels soft spongy and bubbles and white powder or crystals appear. This is due to the fact the membrane can be applied onto the damp surfaces so there is little surface preparation that needs to be made. A damp patch appeared on the wall in the first floor bedroom.

Damp content of just 5 in a plain brick wall will lower your home s insulation performance by 50. The second option is to use a damp proofing membrane on top of the existing concrete surface. The thermal conductivity of your wall decreases vastly with dampness. My house was built 1950.

It s an external wall but no pipes anywhere near i e. The second option is to lay a thin but tough structural waterproofing membrane on top of the existing concrete surface. Damp proofing problems on outside. Spray foam is a 100 water blown material and expands quickly up to 100 times its original volume and size.

Hi there several of the internal walls at first floor level are masonry walls supported by the timber floor not sure if there. Damp coming up through concrete floor. These membranes are often laid as part of a basement waterproofing specification but they are equally successful on damp concrete floors above ground. Admylin thu 25 nov 10 08 53 13.

Paint not adhering to the wall. Rising damp may cause damp proofing problems on inside walls which will likely include 1. Our bedroom is on the 2nd floor we moved in here in august and painted everything. Uneven timber upper floor due to masonry walls and sagging floor joists.

Wall paper lifts and stains appear on the walls. The damp is worst at skrting board level and seems to seep up with smaller patches up to a 80cm higher up.