I have installed both ceiling and floor moldings around the chimney, glued with PL400 applied in spots, and then used hot glue to hold it in place until the PL400 dries. The wall is quite uneven, but I applied glue to the highest points, and once the glue dried, I filled with acrylic sealant in several rounds and smoothed it out. My wall is white, but it should be possible to mask the wall with silver tape and then remove it after applying the sealant.
I read that you can have wooden molding on the ceiling, so I suppose also moldings on the floor.EgenHärd said:
So you can only have end grain against the chimney, BUT at the bottom and at the ceiling, it’s not so important :-?
I read it a few hours ago but now I can't find that article unfortunately :'(
Speaking of uneven...
In the picture, the baseboard is attached to a screwed-in board that has the same thickness as a plastered "edge" around the chimney. A space up to the top of the baseboard is also plastered and then filled with wood filler. The crown molding is attached directly to the plastered edge, screwed in with plugs. The joined corners are glued.
I'm considering painting edges with a type of granite paint that has the same appearance as the plaster between the stones.
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