troyce1

We just had our roof replaced, and it seems that water is still seeping through the bricks. We are getting a liner installed and a cap, but for now I was thinking of parging, and waterproofing (drylock) the brick to keep water from ruining the drywall.

Currently the area is gutted, but when the drywall goes back it will be about a 1/2 inch from the brick. I want to make sure the water is not seeping through, but would like to avoid the cost of professional repointing.

I was planning on, parging, and waterproofing, but not sure of the best mortar type to use, whether to use diamond mesh to form around the chimney, and if to maybe drylock, then parge, and drylock again. so that the water cannot get to the concrete and split the layers apart.

Thoughts, advice?
Always appreciated.

-Terry

yesitsconcrete

i've used drylock/thoroseal/etc on parapet exterior surfaces w/good results but NEVER on ANY negative side,,, can't answer if the brick chimney needs parging but, as it appears this surface's interior, its a negative side & you'll waste time/$ imo,,, you need to stop wtr penetration rather'n putting fingers in the dike,,, get up on the roof - might clean the brick & apply silicone siloxane but, if repointing's nec, so be it,,, either do it right or do it over after repairing the damage 'cause you didn't do it right the 1st time

Ron6519

You don't mention where this parging will happen. Above the roof line or below. If below, you would only make the problem worse.
You get water inside a chimney because the mortar needs attention, the concrete cap needs work or the flashing detail on the roof is leaking.
Identify the problem or problems and repair them in an appropriate manner.
Ron

richardbrickie

agreed