Block and beam has been installed over our basement at ground floor level, with a brick wall built to separate the new B&B floored room and what was the access to the basement, now just a cupboard under the stairs. There are a couple of telescopic air vents under the B&B floor as per building regs.
Since the brick wall went up, the under-stair cupboard has felt damp/humid - the UFH pump/manifold is in here so will be kicking out some heat. Initially I just put it down to the wall mortar drying out, so I left the cupboard door open every day to try help with that, but it's been over a week now and the problem still persists. No noticeable leaks/damp spots and it wasn't an obvious problem before the wall went up.
Does anyone have an ideas for what I can do? I was considering knocking out a couple of the wall bricks and replacing them with air bricks to allow through-ventilation but of course that would cause a draught in the cupboard...
Since the brick wall went up, the under-stair cupboard has felt damp/humid - the UFH pump/manifold is in here so will be kicking out some heat. Initially I just put it down to the wall mortar drying out, so I left the cupboard door open every day to try help with that, but it's been over a week now and the problem still persists. No noticeable leaks/damp spots and it wasn't an obvious problem before the wall went up.
Does anyone have an ideas for what I can do? I was considering knocking out a couple of the wall bricks and replacing them with air bricks to allow through-ventilation but of course that would cause a draught in the cupboard...