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Can a Strong Mortar Mix Cause Brick Damage?

Posted: Sat Dec 10, 2016 12:52 pm
by mutoo
My house was built around 1930, bricks are engineering type. Had some repointing done a few years back on a small section of wall. Is it possible a strong mortar mix can damage bricks whereby they become pitted?

Thanks

Re: Can a Strong Mortar Mix Cause Brick Damage?

Posted: Sun Dec 11, 2016 9:17 pm
by welsh brickie
yes, mortar is used to hold the bricks apart, not keep them together, so mortar needs to be weaker than the brick to allow for expansion