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Patching Drywall

 
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Old 02-08-2015, 12:59 PM   #1
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Patching Drywall


Hey fellas, tis' the season for burst pipes, I need to patch some drywall on two bathroom walls to cover the mixing valves and other various holes around the house where the plumber cut squares out.

The holes are good size, 12"x12" give or take, how do I patch the holes, tape, and mud so that you can't see a random square in the wall? I know from previous experience that mudding a painted finished wall will give you two textures even after new paint. any advice on the fix would be very helpful. thanks, anthony
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Old 02-08-2015, 01:30 PM   #2
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Re: Patching Drywall


Don't quite understand your concern.

Square up hole, install new patch, tape & float as necessary, texture & paint.

Is your concern matching texture or shadowing on a 4/5 finish or something else?

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Old 02-08-2015, 01:45 PM   #3
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Re: Patching Drywall


Griz, I guess i'm wondering what you mean by texture. I've taped new drywall to existing drywall and once it was taped and painted you could tell the corner had been repaired, it was two different textures. How do you mask the fact that you have a smooth tape joint and a textured wall?
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Old 02-08-2015, 02:07 PM   #4
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Re: Patching Drywall


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Originally Posted by A. Finelli View Post
Griz, I guess i'm wondering what you mean by texture. I've taped new drywall to existing drywall and once it was taped and painted you could tell the corner had been repaired, it was two different textures. How do you mask the fact that you have a smooth tape joint and a textured wall?
By texture I'm assuming you're talking about the roller texture you get when you paint a wall? If so, you can prime it with a roller to get roughly the same stippling. I use Kilz Original for that a lot, but a lot of primers will give you the stipple with a longer nap roller.
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Old 02-08-2015, 02:12 PM   #5
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Re: Patching Drywall


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Griz, I guess i'm wondering what you mean by texture. I've taped new drywall to existing drywall and once it was taped and painted you could tell the corner had been repaired, it was two different textures. How do you mask the fact that you have a smooth tape joint and a textured wall?
On an existing textured wall one would usually sand down the existing texture to as smooth as possible with out scarring the paper approx 6" or so beyond the patch. Patch is then floated out and patch is textured to match.

I have only done this with skip trowel, knock down blow & orange peel.

Drywall guys were called to handle the exotic textures.
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Old 02-08-2015, 03:41 PM   #6
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Re: Patching Drywall


It's simple, you have to match the texture whatever that might be since we have no idea.
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Old 02-08-2015, 04:26 PM   #7
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Re: Patching Drywall


Paint it a few times rookie..
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Old 02-08-2015, 05:23 PM   #8
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Re: Patching Drywall


Folks... I don't think he is talking about true texture being on a wall like Orange peel, knockdown etc... He means the very smooth look of the new mud under the paint layer versus the "texture" of the normal field of drywall. At times the difference in those two textures can be extreme.. especially if the field of the old drywall was sanded with one of those Porter sanders, they can scuff up the paper a good bit..

As for the best way to approach the difference.. the only true way to not notice it on a wall that gets a lot of sunshine or light is going level 5 on it and skim the entire wall. Most especially if you have a hawk eye or OCD Customer.

At times breaking out a good primer/sealer will take care of it. I usually sand the entire wall once the primer/sealer is dry. It kinda give a slight scuffed but smooth look that the rest of the wall has.
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Old 02-08-2015, 06:07 PM   #9
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Re: Patching Drywall


I've matched older smooth wall with a can of texture heated way up and on the finest setting, just a fog really. The 12x12 patch would get blended over a 4'x4' area.
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Old 02-08-2015, 06:09 PM   #10
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Re: Patching Drywall


I use a 3/4" nap roller for primer and paint on patches. Regardless you are still going to see the patch in certain lights. Also the flatter the sheen, the better. Semi Gloss will show everything.
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Old 02-08-2015, 06:29 PM   #11
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Re: Patching Drywall


Patching existing drywall and having it look good is somewhat of an art. Not everyone I've seen can pull it off, especially if there is paper taped involved.
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Old 02-08-2015, 06:31 PM   #12
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Re: Patching Drywall


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Regardless you are still going to see the patch in certain lights. .
Really ?
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Old 02-08-2015, 09:14 PM   #13
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Re: Patching Drywall


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Really ?
Yea, really. Sounds like he has no experience patching. You honestly think that he could pull it off without being able to see it? I was just telling him that he shouldn't expect perfection. I wasn't saying that one could achieve a seemless patch, I do it all of the time.
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Old 02-08-2015, 09:40 PM   #14
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Re: Patching Drywall


Quote:
Originally Posted by A. Finelli View Post
Hey fellas, tis' the season for burst pipes, I need to patch some drywall on two bathroom walls to cover the mixing valves and other various holes around the house where the plumber cut squares out.

The holes are good size, 12"x12" give or take, how do I patch the holes, tape, and mud so that you can't see a random square in the wall? I know from previous experience that mudding a painted finished wall will give you two textures even after new paint. any advice on the fix would be very helpful. thanks, anthony
A couple things that might help. (Some may disagree, but anyway....)
Prep the edges of the patch and wall area by pulling a clean blade (utility knife) along all edges. Insert patch (with backing, etc), fill gaps with 5 or 20....and sometimes don't even use tape at all (there, I said it ) Next, use a flashlight (held at side) for your finish coats to inspect them as you do them....see if they are in plane with the rest of the wall (or if you have bumps, concavity, etc)... Fix them immediately while still wet. When it's time to prime, if you're dealing with an old wall, roll a couple layers of primer to build up a similar stipple to approximate the rest of the wall. Go from there.

Still, it's an art, but these might help. Others might say you should always tape the edges of the repair. I used to think so, but it kind of depends. Small stuff you can try without. (I use two straps plywood as backing on holes like those.) Or use something like fibafuse (thinner stuff) and feather it out, avoiding bumps and voids, etc. Your flashlight is your friend.

Last edited by MarkJames; 02-08-2015 at 10:01 PM.
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Old 02-08-2015, 09:43 PM   #15
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Re: Patching Drywall


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Yea, really. Sounds like he has no experience patching. You honestly think that he could pull it off without being able to see it? I was just telling him that he shouldn't expect perfection. I wasn't saying that one could achieve a seemless patch, I do it all of the time.
Sure you do !
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Old 02-08-2015, 10:01 PM   #16
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Re: Patching Drywall


Reno patches are a pain... Mostly made up of bastard butts . It can be leveled out if given the time needed . Just takes a lot of build up .. And busting out . If you can create the illusion that it's flat ! Your on your way!
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Old 02-08-2015, 10:18 PM   #17
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Re: Patching Drywall


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Sure you do !
Prick! But this is why I am voting for you in the COTQ contest.
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Old 02-08-2015, 10:20 PM   #18
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Re: Patching Drywall


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Reno patches are a pain... Mostly made up of bastard butts . It can be leveled out if given the time needed . Just takes a lot of build up .. And busting out . If you can create the illusion that it's flat ! Your on your way!
I was just looking at some water damage repair and she pulled me aside and asked about a patch her husband did. He used 5/8" to patch 1/2" and then painted it with semi. She asked if I could do better. I told her I could do better with no thumbs and blindfolded.

She laughed and gave me the job on the spot.
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Old 02-08-2015, 10:41 PM   #19
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Re: Patching Drywall


If you want a seamless patch hire a pro and pay him for his services. Proper patching isn't learned overnight. Either is taping drywall as easy as a pro makes it look!! Same as getting to Carnegie Hall .... practice, practice, practice.

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Next, use a flashlight (held at side) for your finish coats to inspect them as you do them....see if they are in plane with the rest of the wall (or if you have bumps, concavity, etc)...
Your light idea is good... but I use a brighter light (200 watt min)
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Old 02-08-2015, 10:45 PM   #20
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Re: Patching Drywall


Stipple in a spray can solves the problem;

https://www.menards.com/main/buildin...res/c-8199.htm

Tom

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