New sheet rock

lameduckpoccNovember 19, 2010

Best steps and materials for painting new sheet rock? Thanks

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Faron79

After ALL ALL ALL dust from sanding, etc. is vacuumed/lightly sponged off...

Choose a top-notch primer like Zinsser 123, C2-One and apply a good/full coat.
* Aim for ~ 250-300s.f./gal for this step. Those walls will be VERY thirsty.
* PVA-class primers are OK, BUT....get plenty of it on the wall!! I'd do TWO coats of this stuff.
* If the price is less than $15/gal., walk away & look for better stuff.

OPTIONAL:
* For really sexy smooth walls, let primer harden for a day, and lightly screen/pole-sand them with a 180-grit screen.
* This knocks off little fuzzy nibs when a water-based product hits the sheetrock paper.
* Wall will have to be vacuumed/rinsed again here b4 final paint!
* End result will be quite good looking though!

If you're planning to shoot texture of some type....prime, shoot texture, and prime again. Then paint.

Faron

    Bookmark   November 20, 2010 at 11:12AM
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lameduckpocc

Faron Thank you very much.

    Bookmark   November 20, 2010 at 11:23AM
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bigdoglover

Lameduck, I hope it's OK if I ask Faron a similar question, am not trying to hijack the thread.

Faron, will the optional sexy-smooth step work if we prime walls that are already painted? (House is three years old and has knock-down on the walls.)
Thanks!

    Bookmark   November 26, 2010 at 9:24AM
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paintguy22

If you are re-painting, you should sand before priming. There shouldn't be any reason for previously painted walls to become rough after the primer step.

    Bookmark   November 27, 2010 at 2:59PM
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Faron79

Bigdog...

If ya have textue on the wall now, you'd be sanding a while!!
If you want smooooth, you'll (ideally) prime the existing wall, hire someone good at skim-coating/plastering, pole-sand the walls, vacuum & remove all dust....then prime again.
>>> At long last, you're ready for 2 coats of final paint!

Yes...quite a process!

Sanding AFTER priming can be an advantage, in that some primers will "fuzz" the paper more than others.
If it were MY walls:
* I'd apply good full coat of an Enamel-Undercoater primer.
* Let dry ~ 6hrs. to be easily sandable, using ~ 220-grit sanding-screen.
* Fair amount of dust here, so make sure you have a Fine-dusts insert-bag for your Shop-Vac!!
* Lastly, lightly sponge-rinse the walls after a thorough vacuum.

>>> NOW you're at the "sexy-smooth" wall stage...ready for 2 coats of finish-paint!!

Faron

    Bookmark   November 28, 2010 at 12:37AM
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