OK, someone at a large store advised me that if I was painting with flat
paint on a smooth wall, I should use roller with a thicker nap. Why?
I see on the web that some sites advise using a short napped roller with
glossy and semi-glossy paint. Wouldn't a thick nap provide greater chance
of drip marks?
I am not a pro painter.
The quality of your paint job after proper preparation is in the quality of
your paint, roller, brushes and skill.
A 3/8" nap on almost any grade roller will yield good results with a flat
interior paint on a smooth wall. The flat paints are formulated to be "self
leveling" and you have to work at it to screw them up. The thicker nap
allows you transfer more paint to the wall. This perpetuates the one coat
myth. That said; I use a 3/8" roller for all interior walls and lightly
It is harder to apply an even coat using semi or glossy paint. Minor
imperfection is the coat level result in more or less gloss resulting in an
If you are experiencing drip problems using a roller, you are putting it on
way to thick.
Roller marks occur when rolling wet over dry but can be smoothed out if you
do it as they occur.
As mentioned above, plan on 2 coats for anything you care to look at later.
Shorter the nap the smoother the finish. 3/8 is smooth walls. You want a
really smooth finish, use one of the new foam rollers. No "orange peel"
like you sometimes get with nap rollers.
Larger nap rollers are for rough surfaces like cement block..to get into
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