Drilling hole for vent fan through brick wall. Need advice from Masons.

Can you post a pic from outside?
I would say do not cut into the arch. That is what is supporting the brick above it.

-- The difference between a pro and an amateur, an amateur points out his mistakes

Hey Gary,

Yeah, I figured so, that’s why I asked, Need a 4” diameter hole and it’s the perfect spot right in the middle of the bathroom between the joists. Here it is.

If this is the only possible location, you could cut your hole through big enough to fit a piece of Sch.40 4” pvc and them tuck point it from both sides all the way to the center so the pvc is then sharing the load dispersal. Your tuck pointing needs to be solid and complete. Any voids may lead to movement and cracks. Use a grout bag and a tuck point tool to really fill it up.
Try as much as possible to minimize the damage to the brick. I’ve drilled brick, block, and concrete with success by drilling a series of 3/8 holes in the diameter needed and chipping it out. Unless you have a 4 1/2” boring bit…..

-- The difference between a pro and an amateur, an amateur points out his mistakes

Thanks Gary, Great idea using the rigid pipe. I’ll poke around in the ceiling first to see if there is a better spot before I proceed. Cheers.

Two layers of brick has me thinking that you could easily loosen bricks as you chip and drill .You did say old house .I was thinking maybe you should drill a few hole and fill the void between the bricks with spray foam .after it harden it will help keep the brick you do want getting loose from falling out . Seems like you can by low grade diamond bits these day days ,like from this place http://www.mcgillswarehouse.com/c/183/drills-driill-bits

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