Ernie Simpson
02-20-2021, 12:55 PM
I did an inspection yesterday for a homeowner (fun to find an old flexible gas connector from the distant past - the owner confessed he put it on himself. Not the issue, however). The home has a concrete block chimney (built in 1945). No internal problems from what I could tell (new gas liner and recently checked clay tile liner for new oil-fired heating system). The chimney has either a very thin veneer of mortar covering or a thick coat of some type of paint. Gross peeling and sloughing off. Past input from masons has not been helpful.
The owner wants to know what to do with the chimney as paint adhesion problems have been chronic. He wants to sandblast - which I told him was a 'no go'. The photos show a whitish stain which I believe may be the residue of an old paint that is not allowing adhesion of new paint. I think that he may just need to keep removing the old stuff as it loosens and keep painting with a latex masonry paint. Does anyone have a better idea?
The owner wants to know what to do with the chimney as paint adhesion problems have been chronic. He wants to sandblast - which I told him was a 'no go'. The photos show a whitish stain which I believe may be the residue of an old paint that is not allowing adhesion of new paint. I think that he may just need to keep removing the old stuff as it loosens and keep painting with a latex masonry paint. Does anyone have a better idea?