Hi everybody! Need some advice on a single story extension that we want to installa new kitchen in. Its rougly 4m x 4m, its got a dpc but m not sure if its cavity wall. There is black spotting in one corner thats got worse over winter. The room is always cold, however i pulled up the carpet in the offending corner and found no dampp.
There is a large crack coming from the ceiling to halfway down the wall. I checked extrerior and mortar is cracked roughly in same area. Interestingly the bricks look newer in an area the size of a door, could this be why its so cold in there? Has someone filled a door in and not done a good job? Ive tapped the interior walls around the cracks and the sound changes from hollow to solid. does this mean the wall needs replastering?
Im not experienced at DIY so if anyone can help it will be much appreciated
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