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Old 08-12-2014, 03:26 PM   #46
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Sherwin-Williams Flat Superpaint Striping On Ceiling


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Originally Posted by rbriggs82 View Post
1/2 nap + masterhide = problem solved.
Unfortunately Masterhide is not available in California.

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Old 08-12-2014, 03:27 PM   #47
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Sherwin-Williams Flat Superpaint Striping On Ceiling


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I still think 1/4" roller is part of the problem. This is a fairly large ceiling and 1/4" is a very short nap roller. When the sprayer guy goes across the ceiling what tip he uses will determine how much paint he is putting on. Then the one following comes along with this short nap roller, before he gets half way across it's full of paint. Now it can't do it's job, this can cause stripping.

Move up to a 1/2" roller cover and scrap the excess paint out of it with a 5n1 tool after a couple of trips across the room. If this is a re-paint with stipple already on the ceiling it may not need to be back rolled.

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What size spray tip do you recommend?
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Old 08-12-2014, 05:27 PM   #48
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Sherwin-Williams Flat Superpaint Striping On Ceiling


I would probably go with a Graco X 410 this is a smaller tip an 8" fan and be sure to overlap 50%. With the smaller tip you can move a little slower so you can watch your overlap and build a little better.
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Old 08-12-2014, 07:00 PM   #49
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Sherwin-Williams Flat Superpaint Striping On Ceiling


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Originally Posted by ToolSeeker View Post
I would probably go with a Graco X 410 this is a smaller tip an 8" fan and be sure to overlap 50%. With the smaller tip you can move a little slower so you can watch your overlap and build a little better.
Thanks, I really appreciate all the feedback. I will pass this information along to the painter. We just need to decide upon a paint now.
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Old 08-24-2014, 12:39 PM   #50
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Sherwin-Williams Flat Superpaint Striping On Ceiling


We repainted the ceiling yesterday with Benjamin Moore Ultra Flat Ceiling Paint. The painter sprayed first and back rolled using an 18” roller sleeve with a 3/8” nap. The paint dried dead flat with one coat eliminating the striping of the Sherwin-Williams flat Superpaint. Unfortunately, about 45 minutes later 8 bubbles formed of varying sizes.

The Benjamin Moore Ultra Flat Ceiling Paint appears to be a very good dead flat ceiling paint, but we are perplexed as to why the bubbles formed. The underlying Superpaint was applied two weeks ago and the spray lines were purged of any water before spraying. The bubbles predominately appeared in the last half of the 14’ x 24’ ceiling. I will remove the bubbles, repair the surfaces and ask the painter to apply the Benjamin Moore Ultra Flat Ceiling Paint again.

Does anyone have any thoughts as to why the bubbles may have formed?
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Old 08-24-2014, 12:58 PM   #51
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Sherwin-Williams Flat Superpaint Striping On Ceiling


Usually when that has happened to me (bubbles) I attribute it to drywall dust, or some other contaminant on the original surface. Something about that final coat drying pulled loose some areas that weren't bonded well to begin with.

It happened to me on a repaint last week actually. Sometimes they will go away in a day or so. Might want to cut them out and fix them, but then your into doing the whole ceiling again. If they go back down on there own, they will probably stay down. At least till the next paint job maybe.
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Old 08-24-2014, 01:24 PM   #52
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Sherwin-Williams Flat Superpaint Striping On Ceiling


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Usually when that has happened to me (bubbles) I attribute it to drywall dust, or some other contaminant on the original surface. Something about that final coat drying pulled loose some areas that weren't bonded well to begin with.

It happened to me on a repaint last week actually. Sometimes they will go away in a day or so. Might want to cut them out and fix them, but then your into doing the whole ceiling again. If they go back down on there own, they will probably stay down. At least till the next paint job maybe.
There should not be any contaminates on the ceiling. No work has been done in the room since the last repaint two weeks ago.

I will give it a few days, but there are several bubbles I do not believe will go completely flat. It will be interesting to see the underlying surface when I remove the bubble’s skin.
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Old 08-24-2014, 01:55 PM   #53
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Sherwin-Williams Flat Superpaint Striping On Ceiling


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There should not be any contaminates on the ceiling. No work has been done in the room since the last repaint two weeks ago.

I was meaning under the original coat. Usually when it bubbles like that its down all the way to Sheetrock. Hopefully you won't have to find out.
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Old 08-25-2014, 11:04 AM   #54
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Sherwin-Williams Flat Superpaint Striping On Ceiling


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I was meaning under the original coat. Usually when it bubbles like that its down all the way to Sheetrock. Hopefully you won't have to find out.
I cut open a bubble this morning and see all the paint layers separated from the drywall skim coat. Interesting that this did not happen on the first two paintings of the ceiling. I guess each repaint softens the paint all the way to the skim coat and if there is dust a bubble can form from the weight of the wet paint.

I remember when this painter first arrived I asked him if the skim coated ceiling needed to be dusted off before priming. He told me no because the pressure from the sprayer would blow off the drywall dust.

Since this paint is dead flat I am wondering if I can cut out the bubbles, repair the surfaces, and do a touch up without having them spray and back roll the entire ceiling again.
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Old 08-25-2014, 06:04 PM   #55
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Sherwin-Williams Flat Superpaint Striping On Ceiling


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Originally Posted by Fire4Effect View Post
I cut open a bubble this morning and see all the paint layers separated from the drywall skim coat. Interesting that this did not happen on the first two paintings of the ceiling. I guess each repaint softens the paint all the way to the skim coat and if there is dust a bubble can form from the weight of the wet paint.

I remember when this painter first arrived I asked him if the skim coated ceiling needed to be dusted off before priming. He told me no because the pressure from the sprayer would blow off the drywall dust.

Since this paint is dead flat I am wondering if I can cut out the bubbles, repair the surfaces, and do a touch up without having them spray and back roll the entire ceiling again.
that should work just fine
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Old 08-25-2014, 08:25 PM   #56
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Sherwin-Williams Flat Superpaint Striping On Ceiling


Since they back rolled yes you should be able to touch it up. But really I would get ahold of the painter. After what he told you the least he should do is come back and spray the repairs for you.
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Old 08-25-2014, 10:05 PM   #57
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Sherwin-Williams Flat Superpaint Striping On Ceiling


Tip shear can be a problem when trying to touch up a sprayed finish. Being forced through a spray tip often changes the paints sheen slightly. It having been back rolled does help, and its not always a big deal with flat. But with your lighting conditions I wouldn't count on perfect touch up. At least as 'perfect' as what you seem to be looking for.

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Old 08-25-2014, 11:39 PM   #58
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Sherwin-Williams Flat Superpaint Striping On Ceiling


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Originally Posted by Jmayspaint View Post
Tip shear can be a problem when trying to touch up a sprayed finish. Being forced through a spray tip often changes the paints sheen slightly. It having been back rolled does help, and its not always a big deal with flat. But with your lighting conditions I wouldn't count on perfect touch up. At least as 'perfect' as what you seem to be looking for.
I appreciate the feedback. I will start repairing the bubbles tomorrow and try and paint one with a 3/8" nap roller sleeve to see how it looks. Any pro tips for touch up in this situation?
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Old 08-26-2014, 09:52 AM   #59
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Sherwin-Williams Flat Superpaint Striping On Ceiling


The word "touch-up" usually makes any pro painter's knees buckle. Why you say? Because you have to match any spots EXACTLY to the surrounding area. Impossible? No, but, it is real, real tough. The process has to emulate the exact way the paint was applied in the first place. Mud/spackle has to be primed and allowed to dry. Then the same coats of paint must be applied to the patched areas that were applied to the rest of the ceiling. More often than not, a complete recoat is necessary to properly blend in what was patched. Just my two cents'.

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