I live in an apartment in a multistoried building. The building is assembled of huge enforced concrete plates - one plate is size of a wall of a room. One of the inter-plate seams has a crack in it ...
We've got a brick chimney that's ~25 years old and it's got a quite a few cracks in the mortar (some hairline, some as thick is a quarter). What's the best way to seal all those cracks? I assume ...