Exterior Semi-Gloss on Garage Drywall?

[tc1446]

I've had drywall tape that came loose replaced all over the garage. Drywall guy thinks part of problem is previous poor work coupled with humidity and such that occurs since my garage door is open a lot. It has become the main entry to the house. He treated the area where old tape was removed with Kilz and recommended that I also put another coat of Kilz over his finished work before final painting. Because of openness, humidity, natural dampness, etc, I'm wondering if an Exterior Semi-gloss might be better than an Interior Semi? Any experienced painters out there that can give me some feedback?

 

[JC1]

Do you know how many coats of mud were applied over the tape? Was the tape paper tape or that mesh tape?

Who did the taping, the builder or a pro? To me it sounds like it wasn't taped properly. I know in Canada these builders do a [censored] job of mudding and taping the garage. They only put one coat which is never enough.

To me it sounds like the taping is the issue. I don't think you need exterior paint.

 

[Killer223]

ext paint just more anti molding agents in it. either one will be fine for your application.

 

[Johnny2Bad]

Kilz is a little expensive, there are other, cheaper products that work just as well (they are just water borne shellac-based coatings). Having said that, I don't believe a full-wall Kilz-type prime is necessary in any properly built structure.

Regardless, it's your primer coat that does the work of sealing the drywall and tape/mud, use a good primer, and any topcoat is fine.

Your builder will do the mudding and taping you pay for; the reason some garages are not finished to interior home standards is the drywall/tape/mud is only there for fire rating (has to meet code). If you want an interior grade job, you have to pay more to get it.

It's not expensive, but you won't get it unless you ask for it or if it's in the new home quote. In most locations (certainly around here) there are specialists that do nothing but taping, those are the guys to hire, a painter will charge more.

 

[Warstud]

Your going to want to use an Exterior paint to handle the humidity and temperature changes.

 

[Johnny2Bad]

Un-primed drywall is always going to have humidity problems. Paint is a vapour barrier. The solution is proper primer + topcoat. No need to go crazy on the topcoat, get a decent quality paint but no need for premium paint.

 

[Brybo86]

Originally Posted By: Johnny2Bad
Kilz is a little expensive, there are other, cheaper products that work just as well (they are just water borne shellac-based coatings). Having said that, I don't believe a full-wall Kilz-type prime is necessary in any properly built structure.

Regardless, it's your primer coat that does the work of sealing the drywall and tape/mud, use a good primer, and any topcoat is fine.

Your builder will do the mudding and taping you pay for; the reason some garages are not finished to interior home standards is the drywall/tape/mud is only there for fire rating (has to meet code). If you want an interior grade job, you have to pay more to get it.

It's not expensive, but you won't get it unless you ask for it or if it's in the new home quote. In most locations (certainly around here) there are specialists that do nothing but taping, those are the guys to hire, a painter will charge more.


Huh? Kilz is like $16 a gallon doesn't get any cheaper than that..

Agree with exterior paint

 

[tc1446]

Thanks everyone. The guy that just finished paper taping put four coats of mud after he did the Kilz. I'm only going to Kilz the sections of tape/mud he put on; not the entire garage since its got two coats of paint previously applied.
Based on what several of you said, I'm going with the Exterior semi-gloss. Lowes sells Oylmpic One $156 for 5 one gal cans. Will go with one gal's so if I don't use it all I can return some, plus its easier to handle for this ole guy.