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Old 02-01-2016, 09:01 AM  
Sparky617
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Default Hanging Sheetrock Question

When you hang sheetrock on a wall horizontally do you start with the bottom piece or the top piece?

We were doing some volunteer work in Appalachia this weekend. The house had the finished laminate floor in so the walls were just shy of 8' tall. I was installing the top sheet first. The other team installed the bottom sheet first so they could rest the top sheet on the bottom. I always figured it was better to make any width adjustments at the bottom.

I've seen pro-rockers do it where one guy can hang a 12' by himself. He'd start a nail or two in the top of the sheet that would hit the top plate. He'd lift it into place and then drive the nails he started to hold the sheet. Then they'd finish it off with drywall screws. As a 50 something desk jockey doing this as a volunteer we typically use 8's and two people to install them. Though had they bought us 12's I could have installed them.


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Old 02-01-2016, 09:14 AM  
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That is a great question. It seems much easier to lay the first piece on the floor, then work your way up. I was having some drywall work done once, and the professionals started at the top. When I posed this question to them, they looked at me like I was stupid and said they always install the top piece first, because this is the way it was done. As you can see, they really didn't answer my question either.


 
 
Old 02-01-2016, 09:29 AM  
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If I were doing a commercial space with a drop ceiling, I could see doing the bottom first since the top would likely go above the drop ceiling once it was installed.

I think the pros do it that way because it is easier to trim at the bottom and they want to get the drywall tight to the ceiling drywall. Even without the finished floor in place if your walls are framed at exactly 8' you'll need to trim something off the bottom of the rock since you'll loose a half an inch from the ceiling rock.
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Old 02-01-2016, 09:34 AM  
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If you have trusses you don't nail the ceiling drywall to close the wall in some cases. Then wall board will hold it up, then the trusses can move with out breaking the joint.
But often a room is just over 8 ft so to get everything tight after having the top piece in place they can use a foot jack under the lower one to squeeze it up tight.
Cutting the bottom of the lower sheet leaves all the taping tapers in place.
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Old 02-01-2016, 09:38 AM  
bud16415
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Top sheet first for me that way you have the depressed edge against the ceiling and easier to mud and tape. In the center of the wall two depressed edges and at floor where baseboard will cover the cut edge.
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Old 02-01-2016, 09:38 AM  
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Up here our wall with pre-cut studs our wall is 8' 3/4"
Your walls should be 8' 1 1/8"
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Old 02-01-2016, 09:47 AM  
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Quote:
Originally Posted by nealtw View Post
Up here our wall with pre-cut studs our wall is 8' 3/4"
Your walls should be 8' 1 1/8"

This was a volunteer build. I only came in for a couple of days to hang sheet rock. Framing the walls a little higher than 8' makes sense.

I don't build for a living, I've done more of it than your average DIYer, but never professionally. I'd starve.
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Old 02-01-2016, 09:58 AM  
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Quote:
Originally Posted by Sparky617 View Post
This was a volunteer build. I only came in for a couple of days to hang sheet rock. Framing the walls a little higher than 8' makes sense.

I don't build for a living, I've done more of it than your average DIYer, but never professionally. I'd starve.
Most everyone uses pre-cut studs but in old building fix up you never know some times there is more than just a sub floor sometimes things are adjusted for roof lines or what ever but the pros will try to use sheets long enough to get no more than one but joint in a long wall or ceiling if they can.
I've used 14 ft sheets in a basement suite and never had one but joint.
Thought I would drop off a photo of a foot jack.
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Old 02-01-2016, 10:00 AM  
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We didn't have a foot jack, but found a flat bar will do in a pinch.
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Old 02-01-2016, 10:03 AM  
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Top sheet first for me that way you have the depressed edge against the ceiling and easier to mud and tape. In the center of the wall two depressed edges and at floor where baseboard will cover the cut edge.
Bud, this seems the most logical reason for why they would do it.


 
 
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