Waterproofing drywalls

[RICHARD CRUGER]

Hi everybody i will appreciate suggestions for medium to low cost drywall panel waterproofing, already installed in an exterior location

 

[dadsEH]

Popcorn anyone?

 

[CGT80]

Popcorn anyone?

For what???



Rip the drywall out and use a suitable material. Any other way is just a hack job. It will **** up moisture if it it touching the ground and the ground gets wet, even if you layer something else over the top.

You are brand new and this is your first post.......fishy!

How about introducing yourself and explaining the situation a bit more if this is legit.

 

[rlitman]

Drywall in an exterior location?!? Yep, I'll be starting the popper any moment.

 

[txvwnut]

I'll take some with extra butter.



OP we're gonna need some more info about this exterior drywall, i.e. vertical wall, porch over hang...

 

[rlitman]

...Rip the drywall out and use a suitable material. Any other way is just a hack job...

Now hold on there just a sec. I can thing of ONE way. Build a house around it.
Of course, short of that, yeah, anything else is a hack job.

 

[dadsEH]

For what???



Rip the drywall out and use a suitable material. Any other way is just a hack job. It will **** up moisture if it it touching the ground and the ground gets wet, even if you layer something else over the top.

You are brand new and this is your first post.......fishy!
H
How about introducing yourself and explaining the situation a bit more if this is legit.

I was going to mention all of the above but 'popcorn' covers it....
gotta love a good 'drive by ' first poster eh.

 

[kd3pc]

drywall and water proof should never be in the same sentence, it is not going to happen - no matter what coat/cover/paint with.

Even if you could coat it with something, the interior material will wick water.

best of luck.

 

[nynexit]

Subscribed for all the jokes [emoji3]


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[willymakeit]

Drywall no.
If you are asking about paperless, reinforced board such as gold board then yes.
Are you trying to waterproof or do a vapor barrier? There is a huge difference.
There is a myriad of products from Tremeco ect. There are also a lot of details for openings, flashings, joint and termination requirements.
Above grade or below grade? Sheet goods or roll on?

 

[jhelrey]

Redgard is a paint on waterproofing membrane.

 

[gte718p]

2 part epoxy should make it nice an water proof. Of course by its nature, it is going to **** up a lot o it. I would prime it well first.

 

[LXCam]

^^^^^. No,no, no, flat black paint. Ya that's the ticket.

 

[brownbagg]

they make a membrane that will go over drywall to waterproof but its cost you about a $100 for 4x8

 

[7th Kahuna]

I've seen drywall installed outdoors in shopping centers, but the trick is it is in places that never see actual water. I remember the first time I saw it in an outdoor food court. I thought it was a mistake. Not sure what the designers are thinking, if they are just cheap, or if they figure the spaces will get remodeled before ambient moisture peals the paint.

As for OP's question, I can't imagine anything that I would trust to make exposed drywall waterproof, not at any sort of reasonable cost, and certainly not with any sort of guarantee. Better to cover it with building wrap and an appropriate siding material.

 

[RivennHewn]

Redgard is a paint on waterproofing membrane.

Redguard is an excellent product, but it may not be enough to waterproof drywall.

What is it you're actually trying to do?

what about FRP?

 

[CGT80]

I've seen drywall installed outdoors in shopping centers, but the trick is it is in places that never see actual water. I remember the first time I saw it in an outdoor food court. I thought it was a mistake. Not sure what the designers are thinking, if they are just cheap, or if they figure the spaces will get remodeled before ambient moisture peals the paint.

x2

There is a big commercial building that I help pressure wash once or twice a year (former boss calls me in to run the boom lift, and I used to do maint. and repair on the building) which has truck docks set back into the building. The ceilings of those spaces are drywall. When I first saw a damaged area on one of them, I did a double take. It is fast and easy to put up and get a good finish, but there are many other options better suited to outdoor use. The designer probably didn't count on the building getting dirty and the need for it to be cleaned.

 

[ilovevocs]

x2

The designer probably didn't count on the building getting dirty and the need for it to be cleaned.

Lol,

He probably choose to ignore the contractor who installed when he advised against it as well.


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[Dirtydan69]

They do make an exterior 5/8 fire code WR drywall. As to how it holds up I have no idea as I haven't been back to that job in 25 years. It is still standing. I built a garage attached to a brick building in chicago. They made me use steel studs and three layers of 5/8. I did one inside and two layers outside. Tyveked and vinyl sided. Like I said it's still standing. Funny though that I wasn't required to use fire treated food rafters and sheeted. Seemed kind of half assed.

 

[Justanoldguy]

Hard to believe that people are actually answering to this with solutions. Haha.
Poster one wins here for sucking in the suckers. lol

 

[Badhabit]

Years ago I helped build a church and one wall was "too close" to another house. We put in two layers of 5/8ths drywall and then tyvec and stucco over top. This was an exterior wall in Manitoba and is still fine 20 years later

H

 

[BonzoHansen]

 

[Farrier]

This doesn't work when the water is at 100% saturation

 

[rlitman]

I've seen drywall installed outdoors in shopping centers, but the trick is it is in places that never see actual water. I remember the first time I saw it in an outdoor food court. I thought it was a mistake. Not sure what the designers are thinking, if they are just cheap, or if they figure the spaces will get remodeled before ambient moisture peals the paint...

My guess is that it was spec'd for fire code purposes (which can be especially tricky around commercial kitchens, even more especially around ones with fryers). It is probably a weather resistant type as well.

 

[BonzoHansen]

This doesn't work when the water is at 100% saturation

TV lied to me!

 

[cdeer001]

Beat me to it. LOL

 

[Justanoldguy]

It is probably a weather resistant type as well.

No such animal.
There is a Moisture Resistant drywall for bathrooms etc but not weather resistant.
It is just not an outdoor product ever.

 

[rlitman]

No such animal.
There is a Moisture Resistant drywall for bathrooms etc but not weather resistant.
It is just not an outdoor product ever.

Yeah, that is what I meant (but didn't type). Agreed, that it is not meant to go outdoors.

 

[nynexit]

Beat me to it. LOL

But "It''ll save you THOUsands".....


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