Paint & Primer Combo or Not?

[tc1446]

I'm having my garage spruced up. The drywall tape is coming off so its
all going to be removed and re-taped properly. It has been painted only once
when new 15 years ago. We use the garage a lot to go in/out of house so the
doors are left open a lot. I want to use a good quality OUTDOOR paint. One contractor
says use combo paint/primer, yet a BenjaminMoore paint store owner that I've frequented for
some years says that's not necessary, that a good quality outdoor paint is better. Two coats, rolled on, will adequately cover the re-taped areas easily with no primer needed according
to him.

Would appreciate feedback from anyone knowledgeable about this.

 

[JHZR2]

Separate works much better. Two in one can be a bit of a gimmick.

 

[expat]

I would want to seal the new drywall mud with a latex sealer or a thined first coat, then apply the finnish coat.

I would not use an exterior house paint as it tends to go on too heavy, and you don't need all weather protection.
A good Kitchen and Bath Latex should be just fine to deal with the humidity.

I assume the walls were NOT previously painted with an oil base paint.

 

[dishdude]

You definitely want to use exterior paint so that it doesn't get moldy when you park the wet car in the garage. I'd do a coat of primer and a top coat. The new tape will suck a lot of primer up so buy an extra can if it's returnable.

 

[Ethan1]

This is how paint/primer combos were explained to me. The primer is like the bouncer - it keeps everything under control. The paint is like the dancers - it has to look pretty. You wouldn't want a dancer/bouncer combo, would you?

 

[Blueskies123]

My two cents. I had two fences, one on each side of the house. I painted one side with $20 a gallon fence paint and the other side with $40/gallon paint that had primer and paint. Both sides took two gallons and I cannot see or tell the difference. Maybe in a few years it will wear better but for now i cannot tell the difference and I got the same coverage.
Until someone shows more data I think it is something dreamed up by the marketing geniuses.
Usually you buy cheaper primer that gets absorbed by the walls and then cover it with nice expensive top coat.

 

[zzyzzx]

I figure that paint and primer in one is the marketing department marketing to lazy people.

 

[AZjeff]

I've tried the all-in-one paint and find it too thick, draggy, plus you could peel it off the wall easily. No more thank you.

 

[Trav]

PM member Demarpaint, he is a working pro and may be able to give you some detailed info on better products.

 

[TmanP]

I'd do either a separate coat of primer and paint, or two coats of non-primerized paint. I've heard that the all-in-ones are just a thicker paint that may hide a bit better. I think that it might be a marketing gimmick, but there's nothing wrong with it.

 

[demarpaint]

If I were doing the job, after removing the old tape and cleaning the area I would apply a coat of Gardz to all the areas where the tape is going. Just a little wider than the width of the area the spackle is going to cover. If you're ambitious you can even coat the entire area with it. If a flat paint was used prior, it will lock and seal everything up. After the taping and spackling is finished I'd apply a good latex primer followed by a good quality exterior latex paint. Two coats is usually best. Something with a flat or matte finish would look the best. If you're working with Benjamin Moore paints use Fresh Start latex for the primer and Moorlife paint would look the best. MoorGard would give you a bit of a sheen, however the look isn't as nice as the Moorlife. But that's a matter of taste.

Make sure the temperature of the garage remains at least 50F during the project, and at least a week after it is completed so the paint can cure properly.

 

[sciphi]

I've got nothing else except to say that some Floetrol paint worktime extender in the paint will water down the ubiquitous "paint and primer in one" junk enough to go on properly. It'll also cover up less than perfect technique. I've redone three rooms in my house using mid-grade paint from the blue box store and Floetrol. Those rooms came out looking pretty good for a DIY effort.

 

[AirgunSavant]

Wash the walls down with TSP or any degreaser suitable by hand if really dirty and use a poll sander with 100-120 grit paper after it dries. Do that first and then it won't matter if you use a good indoor paint or outdoor. Outdoor is not necessary at all.
Garages are best with flat or eggshell- satin.

Just get a qt of primer to kill any stained areas that you may have if the garage is as important as you say. You really should do a spackle job on dents and dings and take care of unsightly nail pops too.........

If you have a real mess and you're not going straight white you can get a good latex primer tinted the same as the top coat to save time. Only if the garage is rather rough