Paint New Drywall Before Tiling?

[Josh]

I've installed new 1/2" conventional gypsum drywall in the area
between my kitchen countertop and the bottom of the wall cabinets.
I'm looking for some decorative ceramic tile to use as a backsplash
over/behind the sink and extend it around to the area over/behind the
range. What I'd like to know is this:

Once I find the tile I want to use on that wall, is it necessary to
prime and paint the new drywall before applying the tile mastic? I
haven't bothered to tape the joints yet; figure the 4x4 tiles will
cover the joints anyway. Just wondering if the mastic or thinset
mortar will adhere good enough to the bare drywall without any special
prep.

[hr(bob) hofmann@att.net]

I would certainly tape and level the joints so there is a flat backing
for the tile and so there is a continuous backing to prevent any
cracking of the tiles or grouting.

[EXT]

I always cover the drywall after taping and muding with a couple of coats of
latex primer before tiling.

[Red Green]

"EXT" <noe...@reply.in.this.group> wrote in
news:4ad13852$0$65854$892e...@auth.newsreader.octanews.com:

Pure speculation:

Drywall would suck up the moisture from the tile adhesive causing it to
dry improperly and possibly weaken the bond. May depend on type of
adhesive.

[Josh]

OK, thanks guys. It's not a very big area and I have a fresh, nearly-
full gallon of Kilz latex primer. I'll prime it before tiling. Still
don't see the value of taping the joints that will be tiled over,
though. They're all butt joints so no valleys to interfere with the
tiles.

[Red Green]

Josh <joshh...@fastmail.fm> wrote in news:860e32fb-d7a5-4846-8390-
506c75...@j4g2000yqa.googlegroups.com:

> Kilz latex primer

Shake/stir it WELL.

Putting up a separate topic shortly on this.

[dadiOH]

I have a lot of Saltillo time...made 4" mop boards (base boards) of same.
They are all stuck to the drywall with thinset. Some are on paint, some on
bare drywall. None have ever loosened (14 years). If I had my choice, I
would have put all on bare drywall.

Primed & painted, bond is as good as the paint is to the drywall paper.

Unprimed and painted, bond is as good as the drywall paper is to the rest of
the sheet.

--

dadiOH
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[RicodJour]

> >> On Oct 10, 7:17 pm, Josh <joshhemm...@fastmail.fm> wrote:
>
> >> > Once I find the tile I want to use on that wall, is it necessary to
> >> > prime and paint the new drywall before applying the tile mastic? I
> >> > haven't bothered to tape the joints yet; figure the 4x4 tiles will
> >> > cover the joints anyway. Just wondering if the mastic or thinset
> >> > mortar will adhere good enough to the bare drywall without any
> >> > special prep.

Doesn't anyone read the manufacturers instructions? All manufacturers
of tile mastic specifically mention drywall as a suitable substrate
with no mention of paint or primer.

Tape the joints so there will be no movement between the pieces of
drywall. The movement could pop tile.

R

[Red Green]

RicodJour <rico...@worldemail.com> wrote in
news:5680e0c2-beca-4cca...@z34g2000vbl.googlegroups.com:

Oh, the old RTFM huh?!

[Phisherman]

Before you do anything, carefully read the manufacturer instructions
on the tile mastic container. Be critical about the drywall seams.
Do visual/feel tests using a work light against the wall, lightly run
hands over the seams. Wipe down walls with a very slightly damp terry
towel to remove the dust. If instructions do not say "prime" don't
waste your time doing it--it might even make adhesion worse.

[benick]

"Phisherman" <nob...@noone.com> wrote in message
news:ram4d5th1oscmn70n...@4ax.com...

FWIW , in all new construction the drywall is finished and primed before
cabinets , counter top and back splash...Never heard of any problems....

[Dan]

replying to Josh, Dan wrote:

If your tiling a floor you most surely need a backer board which has been
screwed down every 6" and had all of the joints meshed and mudded or the
grout will crack within months or even weeks. The exception being a level
concrete floor. Drywall is perfect for applying wall tile and backsplash.
Type 1 mastic manufactorer Mapei recommends priming as it "dramatically
enhances the cohesion between the tile, adhesive, paper and gypsum board"
and I think the reason for this is because they sell the recommended
primer. The same instructions go on to say "surfaces should be free of
all dust, grease, wax sealer, paint and primer" if you can believe it. I
tape the joints and maybe add a few screws were needed on unpainted
drywall because if you tile over a crack or uneven surface or floating
drywall, your asking for your grout to fall out down the road. if the
wall has been painted with a glossy paint I always rough it up very good
with a drywall rasp to give the wall some "tooth" for the adhesive. The
main reason tile falls off is exhesive moisture/steam in the room or the
installer put to much adhesive on and it dryed out before the tile could
be applied.

--

[hrho...@sbcglobal.net]

The OP was 5+ years ago!!!!

[Col. Edmund Burke]

Paint the tile before drywalling.

[Adam Kubias]

On 2015-03-24 10:20 PM, Col. Edmund Burke wrote:
> Paint the tile before drywalling.

The only time you ever made me laugh.

[Col. Edmund Burke]

"Adam Kubias" <adam....@gmail.com> wrote in message
news:vWwQw.125173$2j2....@fx23.iad...

> On 2015-03-24 10:20 PM, Col. Edmund Burke wrote:
>> Paint the tile before drywalling.
> The only time you ever made me laugh.

Because you take yerself too seriously?
LOL

[Alz]

replying to hrhofmann, Alz wrote:
I have this question today, so it doesn't bother me that the thread is old!

--
for full context, visit https://www.homeownershub.com/maintenance/paint-new-drywall-before-tiling-399407-.htm

[Alz]