Painting Plywood Need some help


I

Iowa883

Ok guys,
I have decided to go with 1/2 in. plywood for my shop walls.
How do I start, do I need a primer or do I just go into it with paint ? I am
painting the walls and ceiling white.

Also, another figure for you painters, here are my shop dimensions. How much
paint/ primer will I need ? 24 ft. wide X 40 ft. long X 12 ft. high.

Any particular brand of paint/primer for years of service ?

Thanks so Much,
Iowa883
 
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L

longshot

yes primer is cheaper than paint. if you are using a color, have the paint
store tint the primer close to the finished color, it will save a coat. each
gallon is 400 sq ft. (depending on thickness) ... you have close to 2500 sq
ft to cover.. that's a bit more than 6 gallons per coat... first coat
absorbs a lot. probably need 2 complete coats & a touch up coat after that.
if you spray it or use a heavy napp roller you could easily use 25 or 30
gallons. happy painting.
 
L

longshot

24x40x12 = 11,520 sq.ft. You don't have any doors or windows?? :)
that's cubic volume
its (24*12)2 + (40*12)2 +24*40 (ceiling) =2496 sq ft. div by 400 = 6.24
gallons per coat
 
I

Iowa883

Actually, I have a 9X7 garage door, 3X3 window and two walkout doors .
I wasn't going to get that complicated but if you have some free time and
subtract that from my coverage go ahead and be my guest :)
Thanks so Much,
Iowa883
 
I

Iowa883

Oil primer like Kilz or something ? Or since the walls are going to be white
, how about a primer that is white and can also serve as my paint ? Do they
make such a covering ?
Thanks so Much,
Iowa883
 
S

SQLit

Iowa883 said:
Ok guys,
I have decided to go with 1/2 in. plywood for my shop walls.
How do I start, do I need a primer or do I just go into it with paint ? I am
painting the walls and ceiling white.

Also, another figure for you painters, here are my shop dimensions. How much
paint/ primer will I need ? 24 ft. wide X 40 ft. long X 12 ft. high.

Any particular brand of paint/primer for years of service ?

Thanks so Much,
Iowa883
check the home stores for pre tined paint. I have use it for years as a
primer. As long as you do not get some dark color then try to put a light
coat over it. Recently I wanted some block fill for my fence. I found a 5
gallon container at the depot for $25. Mixed it with some water and my
sprayer went to town. I put 2 coats of my color over the top and everyone
says how nice it looks.

Just do not try mixing latex and oil doing this.
 
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D

Duane Bozarth

longshot said:
yes primer is cheaper than paint. if you are using a color, have the paint
store tint the primer close to the finished color, it will save a coat. each
gallon is 400 sq ft. (depending on thickness) ... you have close to 2500 sq
ft to cover.. that's a bit more than 6 gallons per coat... first coat
absorbs a lot. probably need 2 complete coats & a touch up coat after that.
if you spray it or use a heavy napp roller you could easily use 25 or 30
gallons. happy painting.
I get closer to 1500 sq-ft ((40+24)*2) * 12.

First coat over plywood will be closer to 150 sqft/gal, top coat about
300 will probably be better estimates. You'll need one primer coat and
(probably) two top coats if you want a real good coverage.

I'd go w/ a glossier top coat to shed dirt and reflect light better for
a shop.
 
D

Duane Bozarth

Iowa883 said:
Oil primer like Kilz or something ? Or since the walls are going to be white
, how about a primer that is white and can also serve as my paint ? Do they
make such a covering ?
....

Probably don't need the mildewcide unless you're in a really humid area,
but wouldn't hurt. Primer isn't intended as a top coat and won't serve
very well as such.

At that point you're getting into whether you're looking to get by cheep
or want a good job. An enamel top coat (can be latex) of higher gloss
will be much easier to keep clean, last longer, and reflect light
better.

I would probably have a white tinted just a little to keep it from being
"too white" and being blinding to look at directly...
 
E

Edwin Pawlowski

Iowa883 said:
Oil primer like Kilz or something ? Or since the walls are going to be
white
, how about a primer that is white and can also serve as my paint ? Do
they
make such a covering ?
Thanks so Much,
Iowa883
You can just leave it as primer. Primer will not hold up as well over time,
is flat and does not clean as well. Right now I have about half my garage
insulated and sheetrocked and primered. I'm waiting until it is all done to
put hte finish, but it does not look all that bad.

Since you need more than one coat, using one primer, one finish, will still
give the best overall results. Primer will allow the finished coat to cover
more space with less paint.
 
I

Iowa883

SQLit said:
I

check the home stores for pre tined paint. I have use it for years as a
primer. As long as you do not get some dark color then try to put a light
coat over it. Recently I wanted some block fill for my fence. I found a 5
gallon container at the depot for $25. Mixed it with some water and my
sprayer went to town. I put 2 coats of my color over the top and everyone
says how nice it looks.

Just do not try mixing latex and oil doing this.
So,
I need to either stay with oil based or latex for the primer and top coat ?
Thanks,
Iowa883
 
D

Duane Bozarth

Ralph Mowery wrote:
....
Add the ceiling of 24x 40 to that .
OP: "I have decided to go with 1/2 in. plywood for my shop walls. ..."

Don't see anything about a ceiling there... ?)
 
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D

Duane Bozarth

Iowa883 wrote:
....
So,
I need to either stay with oil based or latex for the primer and top coat ?
Not necessarily...the other post was talking about taking a bunch of
returned or other low-cost paint and using it as primer...was mixing all
the various things he found together--obviously, that would have to be
at least all an oil- or latex-based to have any chance of mixing well...

There are both oil and latex primers suited for either oil or latex
topcoats. The particular primer will say whether it is/is not suitable
for a given top coat.
 
3

3rd eye

Unless you don't care if the paint is sucked up more in the soft grain,
primer first. Oil primer.
Why oil?
_____________________


24x40x12 = 11,520 sq.ft. You don't have any doors or windows?? :)

11520 sq.ft / 400 sq.ft per gallon (optimistically) = 29 gallons per
coat. Plan on two coats, both primer and top coat.

If you want long service, use oil paint.
Again why?



If you also want easy
cleaning, use semi-gloss.
Agreed on the semi-gloss. Though in this case I'd tend more to an
eggshell or satin.



Not going to look great on plywood though.
Neither would latex.

You can tell the difference between an oil based paint & latex on
plywood?
I suppose I could on trim, but on plywood? in a shop?

I came from the old school- where oil was the absolute best.
Not necessarily so anymore. Acrylics have improved considerably in
recent years.

It is, after all a shop.
And to the OP a, damn nice sized shop.
I'm envious.
 
F

francoischoquette

You forgot the ceiling :

40x24 = 960 sq.ft.

1536 + 960 = 2496 sq.ft.

Longshot was right...
 
I

Iowa883

3rd eye said:
Why oil?


Again why?



If you also want easy

Agreed on the semi-gloss. Though in this case I'd tend more to an
eggshell or satin.



Not going to look great on plywood though.


You can tell the difference between an oil based paint & latex on
plywood?
I suppose I could on trim, but on plywood? in a shop?

I came from the old school- where oil was the absolute best.
Not necessarily so anymore. Acrylics have improved considerably in
recent years.

It is, after all a shop.
And to the OP a, damn nice sized shop.
I'm envious.
Thanks for the input and compliment on the size. The actual size of the
whole shop is 40X56 but my actual shop "shop" is the dimensions above. The
rest is just personal storage. I own a motorcycle repair shop and this is my
new shop.
Thanks,
Iowa883
 
S

Steve Manes

I have decided to go with 1/2 in. plywood for my shop walls.
How do I start, do I need a primer or do I just go into it with paint ? I am
painting the walls and ceiling white.

Also, another figure for you painters, here are my shop dimensions. How much
paint/ primer will I need ? 24 ft. wide X 40 ft. long X 12 ft. high.

Any particular brand of paint/primer for years of service ?
In addition to the excellent advice you've gotten from others, I use a
sanding sealer, especially on non-veneered plywood, before priming.
This will raise the loose grain, which you then lightly sand off
before priming. It makes for a smoother and more consistent finish and
one that requires less paint.

Steve Manes
Brooklyn, NY
http://www.magpie.com/house/bbs
 
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