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Discussion Starter · #1 ·
Recently been remodeling my living room on my own house and have installed all new drywall. I used rapid coat mud.

I taped all seams and mudded . I used a graco mark IV sprayer to spray mud onto wall for a skim coat and troweled off. I really wanted this too look good so I did a second skim coat also removing most the mud. I lightly sanded everything. The room looked beautiful and was ready for paint . I rolled two coats of high hide primer on one night and everything looked great.
The next day when I installed paint is the problem. I rolled on a satin paint and I could see lines all over the walls. Looks like tails from the sprayer but I cannot feel them. Everything is smooth with the same texture. I can't figure out what the heck these lines are from. The wall is very smooth with two skim coats and two coats of primer. I have three coats of paint on now and can still see the lines. They are starting to get better but it just erks me with all the time I have making this look good and it turns out like dun!
Anybody have any experience with what I'm talking about or any suggestions. As you can tell by my trade I'm no painter but I thought I did everything correct on this. Nothing got rushed.

I think the lines are from the sprayer when I installed skim coats but I cant feel them, only see them through the paint.:censored:
 

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Discussion Starter · #8 ·
Pictures would help. How long since you painted?
I tried taking pictures but the line wont show up on camera :mad:
When the paint was wet the streaks were horrible but since the paint has dried they have become less noticeable but still there. I think 5 coats ought to fix it :laughing:
 

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Not familiar with the high hide primer, is it PVA primer? regardless very odd that you can see through two coats of any primer, yet not feel it on the surface.
 

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Discussion Starter · #10 ·
What brand / type of finish paint are you using? what color?
The paint is Pittsburgh and its a semi gloss enamel. The top color is hot cocoa and the bottom color is caraville brown. Both colors show the streaks. I sure its not the paint , I must have fluffed something up in the prep work
 

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If the wall is smooth and the lines show through, without seeing it here is what I think.
The PVA primer is low end primer, none the less I think for a deep base color you may have been better off with using a grey tinted primer.
Some deep base colors can be almost transparent and so poor at covering (usually reds, yellows etc, rarely earth tones)

What to do now? obviously you don't want to go back to the primer step. I would focus on just one wall for now, not the whole room.
Paint one wall with one more coat of paint, see if things improve. If so it could take another coat to get it to an acceptable finish. If you get it to look acceptable then you know two more coats will finish the room.
Be sure to let the paint dry thoroughly between coats.

With red paints 4 or 5 coats is not unusual if the right primer isn't used.

Good luck.
 

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Typically those "lines" are from not backrolling. But in this case its mudd not paint.

I am just grasping at straws, but maybe just maybe the lines you see are a very slight difference in material application thickness due to using a sprayer. While it may feel smooth to your hand, it isn't.

2 options: re skim or keep painting & painting & painting

god i hope im wrong
 

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Discussion Starter · #14 ·
god i hope im wrong
I believe your right. :censored:

I started rolling on another coat using a 3/4 nap this time and the lines are going away, one more coat after this should do the trick.

I must have just bought the wrong primer. The guy at the big box store said the PVA was the best on the market.

Its my mistake, next time I'm going to sherwin williams and getting good products. The thought I was getting good primer too :no:
 

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Glad to hear you may have it, be careful using the 3/4 nap or you will undo all the work you put in getting it smooth.

PVA is the lowest end of primers, I used it once and never again.
 

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There's a tendency for trails to appear when spraying enamel paints on smooth walls, especially using dark paints. Providing the paint was well mixed prior to spraying and your gun and pump weren't getting worn out, it may have been a spraying technique issue. If going over an off white with a darker color, the tendency is to spray it out in one coat, which leaves the paint thicker in some areas and therefore more sheen.

Perhaps mist coating the first coat and letting it set up a little and then spraying over it again would have allowed for a more even coating, preventing paint buildup and "fan spray trails". You only have to roll out one wall to see if this was the case.
 

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Glad to hear you may have it, be careful using the 3/4 nap or you will undo all the work you put in getting it smooth.
Wow, a 3/4 inch nap for enamel? If it's a cheapo 3/4 nap, maybe (cheapo naps compress fast). A quality 3/4 inch nap and enamel on smooth or semi-smooth walls is way too thick a nap.
 

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Since the primer is all you sprayed I also lean toward roller cover and technique. I would try a 1/2" or microfiber. A 3/4" on smooth walls not a good combo in my opinion and is asking for trouble. About the only time I use a 3/4 is on pretty heavy texture.
 
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