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

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Topic by daverose posted 04-13-2012 10:54 PM 7631 views 0 times favorited 12 replies Add to Favorites Watch
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daverose

3 posts in 2375 days

04-13-2012 10:54 PM

I need to drill a hole for a new vent fan in a bathroom. It’s an older house with double brick construction. I have done others with good success. In this case the most obvious place to put the vent pipe is above the window but it would go through the arched soldier course of bricks above the window. Do any of the masons in the group anticipate any problems with this?



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GaryL

206 posts in 2874 days

04-14-2012 05:10 PM

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

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daverose

3 posts in 2375 days

04-14-2012 05:42 PM

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.

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GaryL

206 posts in 2874 days

04-15-2012 01:44 AM

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

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daverose

3 posts in 2375 days

04-15-2012 12:56 PM

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.

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josephf

9 posts in 2215 days

10-11-2012 02:21 AM

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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