ianmoone

thank you for all the advice

Would a builder be able to do this for me or should I be looking for some more specialised?

I think I might struggle lifting one of those slabs to be honest - I may need to get someone in to do that. I do agree though - I think the slabs are above the slate DPC.

Here's the roof after the chimney was removed.

The chimney was removed 2 years ago and roofed over - so there is no exposed stack. 4 air bricks were inserted. I have had the roof checked and all seems sound. As the problem has been noticeable for 15 years, I'm thinking it's probably nothing to do with the above work.

It doesn't have a DPC as far as I know. Apparently it was built on slate. The flags will have been there at least 50 years.

Photo from this morning - it rained last night.

On the inside are two chimney breasts and dividing walls, no alterations have been done internally since the day it was built. The property has been in the family for 50 years, the brick erosion and efflorescence has been noticeable for the last 15 years. Unfortunately I am only addressing the problem now because the corresponding inside walls/chimney breasts are becoming slightly damp when it rains. The gable end faces North.

Thank you for replying - I'll will definitely look into the air brick. I am still wondering why the problem bricks lie at least a foot higher than the air brick and traverse the whole gable end?

Good afternoon, I have attached some photos of my property's gable end. The house is over 100 years old and is built on slate. Before I contact a builder to try and resolve the problem (brick efflorescence and brick face erosion), could anyone offer me some advice on what they think may be causing the problem? When it rains I am noticing the corresponding inside walls becoming slightly damp. I have done some research but can't find anything that would explain why only the bricks 2 foot up (2 courses) are being affected. Please note that the pointing isn't purple - I've had to compress the images and it's altered the colours slightly. Any help advice would be much appreciated. Thank you.