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-   -   What nap roller should I use for primer? (http://www.diychatroom.com/f4/what-nap-roller-should-i-use-primer-177740/)

amakarevic 04-21-2013 01:43 PM

What nap roller should I use for primer?
 
And does it matter, in choosing the nap, what the sheen of paint will be used over the primer? E.g. if I do my bathroom in semi-gloss using 3/8" nap vs living room in flat with 1/2" nap, should I also prime the bathroom with 3/8" nap and the living room with 1/2" or it doesn't matter? the material i am painting is drywall (semigloss on greenboard, flat on regular, if it matters)

ToolSeeker 04-21-2013 05:32 PM

I use 1/2" for most but it depends on what you are painting. Is it smooth, is it textured, how heavy is the texture? The sheen of the paint has nothing to do with the nap size.

chrisn 04-21-2013 05:36 PM

1/2 for all

amakarevic 04-21-2013 05:37 PM

Quote:

Originally Posted by ToolSeeker (Post 1164366)
I use 1/2" for most but it depends on what you are painting. Is it smooth, is it textured, how heavy is the texture?

drywall, i thought that was a given, sorry.
Quote:

Originally Posted by ToolSeeker (Post 1164366)
The sheen of the paint has nothing to do with the nap size.

i've been told that 3/8" is for semi-gloss, 1/4" for high gloss, 1/2" for flat

amakarevic 04-21-2013 05:39 PM

Quote:

Originally Posted by chrisn (Post 1164369)
1/2 for all

i was told finer nap for more gloss but OK. thanks

Brushjockey 04-21-2013 05:44 PM

It also has to do with the quality of the roller and technique.

1/2 with good in both can do just about anything.

ToolSeeker 04-21-2013 05:44 PM

Look on the plastic the roller comes in 3/8 says for smooth surfaces, 1/2 I think says for semi rough, 3/4 says rough and on up none of them say any thing about the sheen.

amakarevic 04-21-2013 05:47 PM

Quote:

Originally Posted by ToolSeeker (Post 1164380)
Look on the plastic the roller comes in 3/8 says for smooth surfaces, 1/2 I think says for semi rough, 3/4 says rough and on up none of them say any thing about the sheen.

what category does drywall belong to?

jsheridan 04-21-2013 08:00 PM

I use 1/2 for primers, flats, mattes, and eggshells (on full size rooms). I haven't put a 3/8 cover in flat in about 8-10 years. I would use 3/8 for mattes and eggshells in small area rooms, but not for the texture but the quantity the cover holds. I don't want a cover that will hold enough paint to paint one half of the room with a single dip. And though I haven't rolled semi-gloss on walls in I don't know how long, I would use a 3/8 if I couldn't dodge that bullet. 1/2" and up for textured walls regardless of sheen. Tool, they do spec certain covers for certain sheens.

ToolSeeker 04-21-2013 08:59 PM

Quote:

Originally Posted by jsheridan (Post 1164496)
I use 1/2 for primers, flats, mattes, and eggshells (on full size rooms). I haven't put a 3/8 cover in flat in about 8-10 years. I would use 3/8 for mattes and eggshells in small area rooms, but not for the texture but the quantity the cover holds. I don't want a cover that will hold enough paint to paint one half of the room with a single dip. And though I haven't rolled semi-gloss on walls in I don't know how long, I would use a 3/8 if I couldn't dodge that bullet. 1/2" and up for textured walls regardless of sheen. Tool, they do spec certain covers for certain sheens.

Not to my knowledge.
Unfinished drywall would be considered smooth but I would still use 1/2.

jsheridan 04-21-2013 09:08 PM

For the Purdy Golden Eagle

Product Specifications:

Material: High Density Polyester (Knitted)
Paint Types: All Latex and Oil-Based Paints and Stains
Paint Finish: Flat, Eggshell & Satin Finishes
Surface Texture: Smooth to Extra-Rough Surfaces
Core Material: Polypropylene
Core: 1-1/2"
Sizes: 3/8", 1/2", 3/4", 1", 1-1/4"
Lengths: 3", 4", 7", 9", 18"

Usually says it somewhere on the cover too. Nothing I ever pay attention to anyway.

amakarevic 04-21-2013 09:31 PM

for semigloss on drywall, would you use 3/8 or 1/2 ?

jsheridan 04-21-2013 09:48 PM

If I was rolling a bathroom or other small sq area, I would use a 3/8. If I was rolling a larger area, long or high walls, God forbid, I would use 1/2. 3/8 wouldn't carry enough paint to move fast enough on long or high walls. On any kind of texture surface though you have to start at 1/2 to get the depth, regardless of area.

amakarevic 04-21-2013 09:56 PM

Quote:

Originally Posted by jsheridan (Post 1164613)
If I was rolling a bathroom or other small sq area, I would use a 3/8.

That's exactly what I am doing, a bathroom. And the speed is NOT an issue, perfection is. However, I have already done the first coat with 1/2" (as per some of the above suggestions). Do you think it will be better if I do the 2nd coat with 3/8"?

jsheridan 04-22-2013 04:49 AM

How does it look? How was it working with what you used? If both OK, you'll be fine staying with what you have. It's not about speed, but control. A 3/8 cover holds less and in a smaller room it's just easier to control the amount of paint I'm working with, but it doesn't make it impossible. Just go a little easier on the amount you pick up each time.


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