Hi Chris, sounds like water is penetrating through, but usually more water penetrates through the mortar more than the brick it self. Applying a water seal usually dose the trick but only if the pointing is solid and no gaps. But if the wall need repointing then repoint where needed using a waterproof mix, then apply two coats of water seal only after letting any repointing work dry completely out. Thanks, and hope I have helped you.
As long as your roof, fascia, soffits and guttering are all in good condition and your damp proof course is good there shouldn't be any way that water can seep through your walls. Photos of the wall would help?
I would seal and re roughcast
you can always try a tompson water sealant witch can be used to help seal porous brick work you will be require to applied two coats if that dose not work could always render again
First of all are you quite sure it's not your roof and have you had any other roofers there for a second or even third opinion it won't cost you anything and if the house was pebble dashed and now it's not the brickwork must be in bad shape for it to be soaking three walls at a guess it sounds like more the eve tiles possible letting in water but as I've said you must get other opinions from other tradesman hope this helps
Nick shares his story of finding local tradespeople in his new area.
