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Old 04-20-2013, 12:30 PM   #1
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Cutting out big holes


Ready to drywall and have 2 holes in the wall where fish tanks will be going. I'm doing double layered 5/8" drywall and was just going to put the drywall up normally then cut it out once it's up. Then I read that you should not have any seams or butt joints where i'll be cutting. Could someone clarify how best to do this please.
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Old 04-20-2013, 01:27 PM   #2
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Cutting out big holes


Your seams should be where the drywall is screwed into the studs, then mudded and taped. You would not want to cut holes in the studs. I guess I do not understand what you are asking?

What do you mean exactly by large holes? If you are taking a huge chunk out of a sheet of drywall you may have to frame for the opening you plan to cut so you do not abrade and tear up the drywall passing things through it.
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Old 04-20-2013, 01:35 PM   #3
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Cutting out big holes


And I don't understand why you would double up the drywall to 11/4 thick.
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Old 04-20-2013, 01:36 PM   #4
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Cutting out big holes


no not cutting the studs. Just drywalling around this framed opening in the picture. Was wondering if I should cut the drywall in smaller pieces to fit around the opening or put full sheets up and then cut out the opening in the drywall with a saw/dremmel.
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Old 04-20-2013, 01:37 PM   #5
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Cutting out big holes


doubling it up for soundproof purposes.
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Old 04-20-2013, 01:48 PM   #6
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Cutting out big holes


Go to some websites on soundproofing you will find by doubling up what you gain will be very minimal.
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Old 04-20-2013, 01:55 PM   #7
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Cutting out big holes


Actually you're wrong. But I don't want this to be about that. Just asking what would be the best way to install drywall around these openings is all. Was wondering if I should cut the drywall in smaller pieces to fit around the opening or put full sheets up and then cut out the opening in the drywall with a saw/dremmel.
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Old 04-20-2013, 03:41 PM   #8
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Cutting out big holes


Full sheets and a real drywall saw will work best.
http://www.bing.com/shopping/search?...RM=HURE#x0y260
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Old 04-20-2013, 05:13 PM   #9
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Cutting out big holes


Single layer of drywall is all you need. If you want to up it up, use Purple or Green Board, where the tank is going to sit, for the sides and top.
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Old 04-20-2013, 05:15 PM   #10
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doubling it up for soundproof purposes.
Sound proof for what? Your fish are not going to make a sound. If you are worried about the pump & filter system, you can get remote located units, that can be located below the tank.

All you need to do, is just use Roxwool on the wall that the tank is on, and no need for Green Glue, doubled Gypsum, or OSB before Gypsum. You are not building a practice room for a band, just making an opening for a fish tank.
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Old 04-20-2013, 05:25 PM   #11
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Cutting out big holes


You will have more taping and mudding to do if you piece around the opening. Either way will work though. I would cut the opening out of sheet once it is attached with a drywall saw or roto tool.
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Old 04-20-2013, 06:16 PM   #12
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Simply sheet over the opening like it was not there----avoiding seams within 12 or 16 inches of the opening---

this will help prevent seams opening up around the opening---the extra wood framing frequently moves a bit seasonally--which can cause problems with seams near that area---

As to doubling up the drywall for sound deadening----that's not my area of knowledge--- If you wish to--it can't hurt----Mike-----
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Old 04-20-2013, 09:57 PM   #13
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Cutting out big holes


Awesome, thanks a lot for the info guys. First layer is up and looking good
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Old 04-20-2013, 10:20 PM   #14
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Awesome, thanks a lot for the info guys. First layer is up and looking good
That is all you need, is one layer on each side of the wall, with Roxwool in between, or closed cell foam. A second one is over kill.
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Old 04-20-2013, 11:15 PM   #15
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Cutting out big holes


For standard walls sure. But i'm building a theater room and sound proofing by double walling it(room within a room) Going to turn out great
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