Can you put two layers of drywall
Drywall
Drywall is a panel made of calcium sulfate dihydrate, with or without additives, typically extruded between thick sheets of facer and backer paper, used in the construction of interior walls and ceilings. The plaster is mixed with fiber, plasticizer, foaming agent, and various additives …
Gypsum
Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO₄·2H₂O. It is widely mined and is used as a fertilizer and as the main constituent in many forms of plaster, blackboard/sidewalk chalk, and drywall. A massive fine-grained white or lightly ti…
How many layers of drywall do you put on a ceiling?
Certain fire ratings between units (Apartments, condos) call for two layers of drywall, although it is more commonly 5/8's. For a perfectly flat ceiling double up on the rock.
Can you hang drywall in two layers?
Stagger the seams: When hanging drywall in two layers, the seams should not line up. Here we are attaching a second layer of drywall perpendicular to the first.
Can you install a double drywall ceiling?
Yes, you can install a double drywall ceiling. Most drywall ceilings are two layers of gypsum board, with a suspended grid or furring strips on the bottom layer to allow the top layer to rest on it. This is sufficient for residential use.
How do you put up a second layer of drywall?
Related Articles. Install the second layer of drywall on both the ceilings and the walls, with the sheets fitted at a 90-degree angle to the first layer. As with the first layer, cover the ceiling first before the walls. The ceiling screws and wall nails need to be longer to accommodate the extra thickness of the second drywall layer.
Why does my ceiling have 2 layers of drywall?
2 Answers. Show activity on this post. We've done a double layer of drywall to slow the spread of fire in multi-unit developments, specifically between the ceiling and attic space.
Can you put drywall over ceiling drywall?
For a ceiling that is cracked and possibly stained, a good method is to re-cover the entire ceiling with a new layer of drywall. By re-covering the entire surface of the ceiling it allows you to basically start over to achieve that nice smooth and even surface you want.
How do you hang double drywall on ceiling?
2:354:47Drywall Installation On Ceilings | Double Layer On Res Bar! - YouTubeYouTubeStart of suggested clipEnd of suggested clipRight you need to lay that out make sure you're not uh you're only screwing into the channel the resMoreRight you need to lay that out make sure you're not uh you're only screwing into the channel the res bar not into the joist. Itself. So mark where the joists are if you need to um.
How do you install double layer drywall?
8:249:22Double Layer Drywall - YouTubeYouTubeStart of suggested clipEnd of suggested clipScrew that 300 mm Center to Center no overlapping of broad joints to avoid sound and fire leakagesMoreScrew that 300 mm Center to Center no overlapping of broad joints to avoid sound and fire leakages put screws 10mm away from tapered edge and 13mm away from square. Edge.
What is the cheapest way to cover a ceiling?
If you're looking for an affordable option that's low maintenance and easy to install, consider a glue-on or staple-on ceiling. They're available in basic textures and elaborate designs and attach directly to the existing ceiling or onto furring strips attached to the ceiling.
How thick should drywall be for a ceiling?
1/2-Inch-Thick Drywall Half-inch drywall panels are the standard thickness for interior walls, as well as ceilings.
Is it OK to double up drywall?
Double or multiple layers of drywall are sometimes required for increased fire resistance or for reduced sound penetration. You can secure all layers with fasteners in the standard manner, but a good alternative is to use adhesive to attach the outermost, or “face,” layer.
Can you overlay drywall?
A drywall overlay gives the walls a smooth, fresh surface that's ready for new paint, paper or trim. This is a common technique used among professional contractors hired to renovate houses bought under foreclosure.
Does double drywall reduce noise?
Double Drywall benefits The benefit of a double thickness of drywall with Green Glue sandwiched between is less noise penetration. The drywall adds mass, which prevents sound wave penetration, especially lower frequency, and the Glue absorbs sound vibration-damping sound vibration movement.
What's the difference in sheetrock and drywall?
Drywall is a flat panel made of gypsum plaster sandwiched in between two sheets of thick paper. It adheres to metal or wood studs using nails or screws. Sheetrock is a specific brand of drywall sheet. These terms are often used interchangeably.
How many layers of drywall do I need?
If your wall has distinct crevices, cracks, or textured areas, or if your brand of drywall mud isn't offering enough coverage, you may have to do a couple of additional coats of compound. However, in general, you'll need one coat to fill in the seams and three more coats after taping.
What to use to apply drywall to second layer?
Apply drywall tape, corner beading and drywall compound to the second layer of installed drywall.
How thick is drywall?
Drywall sheets cover walls made from vertical wood studs and hollow cavities. Ceiling drywall is 5/8 inch thick, and wall drywall is 1/2 inch thick. Install a second layer of drywall on top of the first layer to create a better sound barrier as well as better insulation and fire resistance, says Fine Homebuilding. Install the first layer of drywall with the sheets vertically against the studs, and the second layer at 90 degrees – or on its side – to the first layer so that the seams don't line up.
What to wear when cutting drywall?
Wear a dust mask or respirator when cutting drywall. Writer Bio. Steve Sloane started working as a freelance writer in 2007. He has written articles for various websites, using more than a decade of DIY experience to cover mostly construction-related topics.
How to make 1/2" drywall conform to a mild deformity?
I'm asking because 1/2" drywall can be made to conform to a mild deformity, by spraying the specific area of the new board with plenty of water, then applying mild pressure over several hours.
What does a square against the ceiling and wall reveal?
Placing a square against the intersection of the ceiling and wall reveals that there's about an inch of sag close along that intersection (it's an old house).
Can a ceiling sag next to the wall?
He called it a "sag" so I assumed the low area was 12" out from the wall. It's just not possible for the the ceiling to sag next to the wall. That could only be too much plaster/compound or a real framing issue.
Can Jasper do a peeling ceiling?
Well, either way, Jasper should probably plan on peeling the ceiling and doing it right. Or, at the least, strapping perpendicular to the joists on the room side of the existing DW to pull things back in to the joists, and rock over it.Mike HennessyPittsburgh, PA Everything fits, until you put glue on it.
Is there strapping between SR and joists?
From what I can see in the attic, what I have is 1/2"drywall nailed directly to the ceiling joists. There is no strapping between the SR and the joists, though there might be some blocking set in between the joists where the existing 4'x8' sheets meet. This probably explains a lot of the sagging. Like I said, crackerbox.
How thick is drywall?
Drywall sheets cover walls made from vertical wood studs and hollow cavities. Ceiling drywall is 5/8 inch thick, and wall drywall is 1/2 inch thick. Install a second layer of drywall on top of the first layer to create a better sound barrier as well as better insulation.
What does it mean when you put green glue on drywall?
Dual layers of drywall = increased mass. Increased mass = sound deadening. Putting green glue between the two layers of drywall acts as a decoupler, so that the outermost layer of drywall "floats" and doesn't transfer the sound waves from your subwoofer through to the rest of the wall.
Can you hang drywall over existing walls?
Hanging new drywall over existing walls is very similar to hanging drywall in a new construction setting. The most notable difference is that you can't see the studs to know where to put your screws.
How to tell if a ceiling is bear to take off?
If it is really a bear to take off, you could try a test piece without removing it and see how it looks and attaches. If the next ceiling is smooth, I would be somewhat concerned of noticeable peaks and valleys, but the only way to tell would be a test piece install.
Can you green glue over drywall?
Otherwise, if you green glue over top of the texture, you'll have high points in the texture that touch the new layer of drywall. That will transfer sound quite effectively - which you don't want.
Can you remove drywall that is 1/2" thick?
It's not something you need to remove. However, how thick is the drywall that you're putting up? If it's 1/2 or 5/8", ok, but I'd be worried about how much weight you're adding. If you're putting up 3/8 or if you managed to find some 1/4", you're going to show every bump and ridge beneath it. You probably want to use half inch, and you might think about firring it out.
Why do you need to have multiple layers of drywall?
Double or multiple layers of drywall are sometimes required for increased fire resistance or for reduced sound penetration. You can secure all layers with fasteners in the standard manner, but a good alternative is to use adhesive to attach the outermost, or “face,” layer. Using adhesive increases the strength of the structure and reduces ...
When attaching the face layer of drywall in a multilayer application, do you use a bead?
Glue on the last layer: When attaching the face layer of drywall in a multilayer application, apply a bead of adhe sive at the location of the framing members. Compound acts as adhesive: Joint compound can also be used as an adhesive when attaching the face layer of drywall.
What is a dry wall to dry wall screw?
Screws designed for the job: These screws, called Drywall-to-Drywall screws, are used in conjunction with adhesive to attach one layer of drywall to another. There are a couple of ways to lay out the multiple layers. Just remember that for both fire protection and sound control it is best to avoid overlapping seams.
What is the purpose of taping seams and corners before applying the second layer?
WORK SMART: In multilayer application, taping seams and corners before applying the second layer helps protect against fire and reduce sound travel. You can also use joint compound as an adhesive to attach the face layer.
Can you attach drywall to concrete?
This method also works well for attaching drywall directly to above-grade concrete walls. If you use screws or nails to attach double or multiple layers of drywall, it’s important to attach each layer with the correct number of fasteners. Never just tack the first layer or layers and fasten only the last layer correctly.
