Actually, I had the case visually examined by an expert from the yellow pages, and he quoted £150 for doing the job, mentioning that it involved some screws and sealing. He said it could be done without removing the plaster, but just from the exterior.
This is why I ventured to look at all these web sites, with an aim to doing some diy and saving some money. I appreciate the difficulty of assessing the case without an onsite climb, but I very much value your advice as you seem to be quite experienced in it.
This is why I ventured to look at all these web sites, with an aim to doing some diy and saving some money. I appreciate the difficulty of assessing the case without an onsite climb, but I very much value your advice as you seem to be quite experienced in it.