I was up on the roof applying linseed oil to the chimney when I saw a crack in the mortar. How do you repair this?
Close-up of a chimney with a visible crack in the mortar, darkened by linseed oil. A brick chimney with visible cracks in the mortar and a weathered surface, situated on a rooftop.
 
That little crack on a stone at the top is not likely to affect anything.........
 
Okay, but do you just fill it with some kind of easily flowing mortar otherwise?
 
But if you've been smearing linolja there, nothing is likely to stick.
 
I'm thinking about next year
 
T
Stupid question maybe, but why linseed oil on a chimney?
 
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