There's a few bricks around my house about 40cm up from ground level where the vertical mortar between the bricks has completely fallen out / eroded away.
In a few spots, there's insects going into it and making a home.
I think I should fill it in, but I'm not sure of the best way to do it.
Mix up some mortar? Just use caulking?
I'm in SWO, Canada, so whatever I do has to be weather resilient.
Best Answer
Is it the bottom row of bricks, and are they regularly spaced? (I guess that's only possible if your foundation comes up 40cm.) Because if that's the case, they're weep holes, and shouldn't be filled in. Otherwise, I'd go with @Tester101's answer.