Hi I have a room on the 2nd floor facing southwest with a pebble dash wall..
2 years ago we had patches of damp appearing mainly by the windows area and adjoining wall next door (inside) the paint was discoloured bubbled and peeled off and had black patches under the peeled off paint.
We got a few people to view and they said the external render/ pebbledash seemed ok (by looking) and they advised that it is coming from the chimney area as there was a crack hole with the brick exposed. So we got that filled in and there was a old blocked Air vent which we installed a new Anti Draught Air vent (Core drill with baffle). And got the effected wall section by the windows (entire wall) plaster re skimmed (Skimming over old plaster). We even had the external pebble dash wall painted to cover any hair line cracks.
After 1 years we did not paint the wall yet but started to see the damp parches appearing again in the same places.
Got some more people to look at the problem again. and they said it might be the roofing. Got a roofer who came in and looked at the roof he inspected the roof externally the tile and lead flashing and capped off chimney and said every thing was good and looking in the loft and said the chimney has been removed and end's in the loft, and the felt was good. Then he got a damp meter and tested ABOVE the internal areas where the damp was and said its 100% not the roofing as it too would be damp.
Then we got Another Damp specialist who came in and did the usual with the damp meter and this time hitting the external pebble dash said there was patches of blown off pebble dash as it sounded hollow.
But what confuses us is that certain areas of the external wall seems solid and why would the adjoining wall next door to my neighbours house too be effected in a small section? and would small patches of blown render just by the windows area cause such damage?
Photos added before skimmed plastering, and Inside loft of Chimney Brest that is removed
2 years ago we had patches of damp appearing mainly by the windows area and adjoining wall next door (inside) the paint was discoloured bubbled and peeled off and had black patches under the peeled off paint.
We got a few people to view and they said the external render/ pebbledash seemed ok (by looking) and they advised that it is coming from the chimney area as there was a crack hole with the brick exposed. So we got that filled in and there was a old blocked Air vent which we installed a new Anti Draught Air vent (Core drill with baffle). And got the effected wall section by the windows (entire wall) plaster re skimmed (Skimming over old plaster). We even had the external pebble dash wall painted to cover any hair line cracks.
After 1 years we did not paint the wall yet but started to see the damp parches appearing again in the same places.
Got some more people to look at the problem again. and they said it might be the roofing. Got a roofer who came in and looked at the roof he inspected the roof externally the tile and lead flashing and capped off chimney and said every thing was good and looking in the loft and said the chimney has been removed and end's in the loft, and the felt was good. Then he got a damp meter and tested ABOVE the internal areas where the damp was and said its 100% not the roofing as it too would be damp.
Then we got Another Damp specialist who came in and did the usual with the damp meter and this time hitting the external pebble dash said there was patches of blown off pebble dash as it sounded hollow.
But what confuses us is that certain areas of the external wall seems solid and why would the adjoining wall next door to my neighbours house too be effected in a small section? and would small patches of blown render just by the windows area cause such damage?
Photos added before skimmed plastering, and Inside loft of Chimney Brest that is removed
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