Bathroom shower drywall bead rusted

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  #1  
Old 09-23-16, 10:09 PM
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Bathroom shower drywall bead rusted

Metal bead - crimped on in shower header. After 15 years moisture attacked it and time for replacement. Some questions for you. Pictures are from my dismantling.
- replace with similar metal corner molding?
- perhaps use paper corner bead with metal on the inside?
- what prep to do to existing raw header before repair?
- the integrity of the existing drywall is good.
- why do installers crimp and not screw in?
- if one uses a metal corner bead wouldn't you want to paper tape over that and feather out the seams?
Thanks for your help.


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  #2  
Old 09-24-16, 12:32 AM
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I'd be using a non metallic corner bead. Looks like the rock was cut a little short too.


Vinyl beads are superior to metal beads in two ways: Vinyl is dent and rust proof.

Metal beads are a notoriously bad choice for damp areas, such as basements, kitchens or bathrooms. They can rust, which causes wall damage and discoloration. In contrast, vinyl beads excel in damp, moisture-prone areas. They resist rust and water damage, so they will stand the test of time without damaging or discoloring the finished wall.
 
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Old 09-24-16, 03:49 AM
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What type of paint is on the bath walls/ceiling? Usually if the bath rm is kept well painted with latex enamel the moisture won't get to the corner bead but as Pete said a vinyl corner bead won't rust.

Many hangers will crimp instead of nail/screw because it's faster. I'm not fond of that practice because I've seen too many corner beads come loose when installed that way.
 
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Old 09-24-16, 10:42 AM
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If using the vinyl bead would I glue it on the green area of the drywall in the photo and then put some staples in? Do I need to fill in the void behind it at all?
 
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Old 09-24-16, 01:29 PM
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I don't know a lot about vinyl bead but know it's often glued in place, some mechanical fasteners in addition is always a good idea. As long as there is enough drywall for the bead to set on securely I wouldn't worry about the void.
 
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Old 09-24-16, 08:53 PM
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First someone should be shot for texturing a bathroom like that.
Impossable to clean, hard to get a matching repair and is going to trap all the dust and grow mold.
Need to be using drywall nails not staples.
I've never used tape on an outside corner.
 
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Old 09-25-16, 07:25 AM
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The corner beads with paper tape already on them work fine. But so would a standard corner bead that you nail on. Applying paper tape over the edges of the corner bead is always an option and is a good way to ensure the edges of the bead will never crack. Its not standard to tape them but some contracts stipulate it.
 
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Old 09-25-16, 10:56 AM
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I've painted a lot of bath rms that had either knockdown or orange peel texture. As long as it's primed and coated with a latex enamel [any sheen] there generally isn't any problems. If any problems existed or are thought to come up [usually from lack of exhaust fan] it's best to use a bath paint which is formulated for the harsher environment of a bath w/shower. Popcorn texture in a bath with shower is always bad news!
 
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Old 09-25-16, 12:47 PM
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problem is that there is that 'void' and the edges don't form a solid 90 degrees. I need 1 1/4" corner bead which I can find metal ones at the local box stores but I want to avoid because of rusting. I'm trying to find 1 1/4" vinyl such as Trim-Tex which is available at some drywall suppliers but looks like it's only sold in 8' sections in bulk boxes. I could use the metal corner beads that come with paper tape already on them but I don't feel they would be rigid enough because of the 'void'. I need something rigid. btw - let's say I did use a metal 1 1/4" corner bead... would it be best to nail or use screws? With all the nail pops I've recently fixed I'm shying away from using nails. Seems that screws have more bite.
 
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Old 09-25-16, 12:50 PM
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If you want to use the paper tape corners, the void is not a issue because you put mud on the wall first which fills the void, then you press the paper tape into it, position it where you want it and then wipe it down.
 
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Old 09-25-16, 01:00 PM
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maybe I don't understand... but that is a big void to fill with mud to "build it out" to a true 90 degree corner. ?
 
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Old 09-25-16, 01:05 PM
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If you think it is too much to fill in one go, you can prefill it to square it up a little more. Use something like Easy Sand 20... mix it up in a pan, apply it to the corner. It doesn't have to be perfect, it just helps fill voids behind the corner. Once it's dry, then mix up another coat of mud to bed the paper (or vinyl) corner into, then once it dries, apoly more coats to finish the edges.
 
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Old 10-02-16, 06:27 PM
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metal corner bead installed

New corner metal bead installed. High moisture area - shower header. As far as mudding goes... can I just build it up to create perfect corners on each side.... lots of sanding.... ? should i prime it before the mud? Seems that mud application would be difficult to maintain enough build up on the edges so as not to expose the raw metal corner. Tape it maybe? thanks!
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Old 10-03-16, 04:02 AM
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You could apply an oil base primer to the corner bead before you get started but IMO it isn't needed. It isn't necessary to completely cover the edge of the corner bead with joint compound. You use the edge as a guide to apply the mud evenly. The less you have to sand the j/c the better! It's normal for a small amount of metal to show once you are finished. The primer and paint will cover and protect that small exposed edge of metal. Primer and a coat or two of latex enamel will prevent the joint compound from absorbing moisture further protecting the bead from rust.
 
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Old 10-03-16, 06:26 AM
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Looks to me like the nails aren't set deep enough. Swipe a 6" knife over them, and if the knife bumps them, they need to go deeper.
 
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Old 10-07-16, 07:15 PM
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Shower header and corner bead - repairs done

Primed and ready to go - just need to texture and paint. I am so done with mudding and sanding!
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Old 10-07-16, 08:03 PM
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Looks good, nice job.
 
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Old 10-08-16, 05:06 AM
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I am so done with mudding and sanding
Just think of all the bragging rites you now have! and the pics to prove it
 
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