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#1
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Why do painted surfaces stick together?
I recently painted a couple of casement windows by removing them and working
on them indoors. They were correctly primed and painted according to instructions, except that due to time constraints, drying time was AT LEAST 5-6 times longer (after each coat) than recommended. In other words, just right. I did the same with the frames into which the windows were installed. Weather was in the 70s and dry for 10 days straight, so there was plenty of curing time between coats. All parts were dry when the windows were reinstalled. Even so, the first time I opened two of the windows after they'd been installed & closed for a couple of days, the mating surfaces stuck badly, damaging the paint in one small spot. Both primer & paint were top of the line Sherwin-Williams stuff. Finish coat was a satin finish exterior latex. |
#2
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Why do painted surfaces stick together?
On 2010-10-22, JoeSpareBedroom wrote:
line Sherwin-Williams stuff. Finish coat was a satin finish exterior latex. You should be asking Sherwin-Williams. nb |
#3
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Why do painted surfaces stick together?
On Fri, 22 Oct 2010 11:46:04 -0400, "JoeSpareBedroom"
wrote: I recently painted a couple of casement windows by removing them and working on them indoors. They were correctly primed and painted according to instructions, except that due to time constraints, drying time was AT LEAST 5-6 times longer (after each coat) than recommended. In other words, just right. I did the same with the frames into which the windows were installed. Weather was in the 70s and dry for 10 days straight, so there was plenty of curing time between coats. All parts were dry when the windows were reinstalled. Even so, the first time I opened two of the windows after they'd been installed & closed for a couple of days, the mating surfaces stuck badly, damaging the paint in one small spot. Both primer & paint were top of the line Sherwin-Williams stuff. Finish coat was a satin finish exterior latex. "One small spot" pretty much tells what happened. That's where you said the damage was, so all the rest of the paint dried fine. You missed a bubble or run, and popped it when you put the windows back in. Then it glued window to frame. Only had to be on one surface. Try to be more careful. Attention to detail I think they call it. Holidays are the other side of that. --Vic |
#4
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Why do painted surfaces stick together?
On Oct 22, 11:46*am, "JoeSpareBedroom"
wrote: Even so, the first time I opened two of the windows after they'd been installed & closed for a couple of days, the mating surfaces stuck badly, damaging the paint in one small spot. Paint can take 30+ days to cure completely down to the base. The pressure of the windows pushed the uncured paint to the surface. Instant stiction. |
#5
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Why do painted surfaces stick together?
On Oct 22, 10:46*am, "JoeSpareBedroom"
wrote: I recently painted a couple of casement windows by removing them and working on them indoors. They were correctly primed and painted according to instructions, except that due to time constraints, drying time was AT LEAST 5-6 times longer (after each coat) than recommended. In other words, just right. I did the same with the frames into which the windows were installed. Weather was in the 70s and dry for 10 days straight, so there was plenty of curing time between coats. All parts were dry when the windows were reinstalled. Even so, the first time I opened two of the windows after they'd been installed & closed for a couple of days, the mating surfaces stuck badly, damaging the paint in one small spot. *Both primer & paint were top of the line Sherwin-Williams stuff. Finish coat was a satin finish exterior latex. |
#6
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Why do painted surfaces stick together?
On Oct 22, 10:46*am, "JoeSpareBedroom"
wrote: I recently painted a couple of casement windows by removing them and working on them indoors. They were correctly primed and painted according to instructions, except that due to time constraints, drying time was AT LEAST 5-6 times longer (after each coat) than recommended. In other words, just right. I did the same with the frames into which the windows were installed. Weather was in the 70s and dry for 10 days straight, so there was plenty of curing time between coats. All parts were dry when the windows were reinstalled. Even so, the first time I opened two of the windows after they'd been installed & closed for a couple of days, the mating surfaces stuck badly, damaging the paint in one small spot. *Both primer & paint were top of the line Sherwin-Williams stuff. Finish coat was a satin finish exterior latex. |
#7
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Why do painted surfaces stick together?
On 10/22/2010 10:46 AM, JoeSpareBedroom wrote:
I recently painted a couple of casement windows by removing them and working on them indoors. They were correctly primed and painted according to instructions, except that due to time constraints, drying time was AT LEAST 5-6 times longer (after each coat) than recommended. In other words, just right. I did the same with the frames into which the windows were installed. Weather was in the 70s and dry for 10 days straight, so there was plenty of curing time between coats. All parts were dry when the windows were reinstalled. Even so, the first time I opened two of the windows after they'd been installed& closed for a couple of days, the mating surfaces stuck badly, damaging the paint in one small spot. Both primer& paint were top of the line Sherwin-Williams stuff. Finish coat was a satin finish exterior latex. Did you consider putting some wax lubricant on the sliding surfaces? TDD |
#8
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Why do painted surfaces stick together?
On Oct 23, 2:01*am, The Daring Dufas
wrote: On 10/22/2010 10:46 AM, JoeSpareBedroom wrote: I recently painted a couple of casement windows by removing them and working on them indoors. They were correctly primed and painted according to instructions, except that due to time constraints, drying time was AT LEAST 5-6 times longer (after each coat) than recommended. In other words, just right. I did the same with the frames into which the windows were installed. Weather was in the 70s and dry for 10 days straight, so there was plenty of curing time between coats. All parts were dry when the windows were reinstalled. Even so, the first time I opened two of the windows after they'd been installed& *closed for a couple of days, the mating surfaces stuck badly, damaging the paint in one small spot. *Both primer& *paint were top of the line Sherwin-Williams stuff. Finish coat was a satin finish exterior latex. Did you consider putting some wax lubricant on the sliding surfaces? That would make re-painting at a later date problematic. Avoid silicone and avoid wax, or plan on disassembly and degreasing every time you paint. R |
#9
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Why do painted surfaces stick together?
On 10/23/2010 7:29 AM, RicodJour wrote:
On Oct 23, 2:01 am, The Daring wrote: On 10/22/2010 10:46 AM, JoeSpareBedroom wrote: I recently painted a couple of casement windows by removing them and working on them indoors. They were correctly primed and painted according to instructions, except that due to time constraints, drying time was AT LEAST 5-6 times longer (after each coat) than recommended. In other words, just right. I did the same with the frames into which the windows were installed. Weather was in the 70s and dry for 10 days straight, so there was plenty of curing time between coats. All parts were dry when the windows were reinstalled. Even so, the first time I opened two of the windows after they'd been installed& closed for a couple of days, the mating surfaces stuck badly, damaging the paint in one small spot. Both primer& paint were top of the line Sherwin-Williams stuff. Finish coat was a satin finish exterior latex. Did you consider putting some wax lubricant on the sliding surfaces? That would make re-painting at a later date problematic. Avoid silicone and avoid wax, or plan on disassembly and degreasing every time you paint. R I'm referring to a little saw wax not liquid wax. I don't think a touch of wax from a wax stick will destroy a paint job or make it hard to repaint at a later time. TDD |
#10
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Why do painted surfaces stick together?
On Oct 23, 11:46*pm, The Daring Dufas
wrote: On 10/23/2010 7:29 AM, RicodJour wrote: On Oct 23, 2:01 am, The Daring wrote: Did you consider putting some wax lubricant on the sliding surfaces? That would make re-painting at a later date problematic. *Avoid silicone and avoid wax, or plan on disassembly and degreasing every time you paint. I'm referring to a little saw wax not liquid wax. I don't think a touch of wax from a wax stick will destroy a paint job or make it hard to repaint at a later time. No, not hard, but if someone doesn't know there's wax on a surface they won't do anything to prevent the problem that will occur. Wax interferes with the adhesion of any water-based coating. Silicone interferes with water or oil based coatings. Wax is used in faux finishing circles - in many circles - as a release agent. The wax certainly will work to reduce stiction for sliding surfaces, and it's not necessarily a big deal if the person who put the wax on is the person who will be doing the subsequent painting. But very few painters, pro or amateur, routinely dewax/degrease a surface, particularly in this day of self-priming, sticks to gloss paint, paints - and sanding doesn't remove all traces of wax. There will be fish-eyes. The OP said that he had casement windows, so there's really not a lot of sliding going on. The problem is due to paint buildup. Over time, paint build up will interfere with hinge and latch operations. The best time to deal with potential paint buildup problems is before a window is repainted. The operating parts should be checked for clearance with a piece of paper. If the paper doesn't slide out easily when the parts are closed, the window is too tight to repaint without some sanding. R |
#11
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Why do painted surfaces stick together?
"JoeSpareBedroom" wrote in
: I recently painted a couple of casement windows by removing them and working on them indoors. They were correctly primed and painted according to instructions, except that due to time constraints, drying time was AT LEAST 5-6 times longer (after each coat) than recommended. In other words, just right. I did the same with the frames into which the windows were installed. Weather was in the 70s and dry for 10 days straight, so there was plenty of curing time between coats. All parts were dry when the windows were reinstalled. Even so, the first time I opened two of the windows after they'd been installed & closed for a couple of days, the mating surfaces stuck badly, damaging the paint in one small spot. Both primer & paint were top of the line Sherwin-Williams stuff. Finish coat was a satin finish exterior latex. I've always figured latex paint takes a month to dry. I did some metal garage doors this summer. Door sections have an overlap. Left the overlaps separated and let dry for a day. Put petroleum jelly on the joints. Worked out well. |
#12
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Why do painted surfaces stick together?
Red Green wrote in
: "JoeSpareBedroom" wrote in : I recently painted a couple of casement windows by removing them and working on them indoors. They were correctly primed and painted according to instructions, except that due to time constraints, drying time was AT LEAST 5-6 times longer (after each coat) than recommended. In other words, just right. I did the same with the frames into which the windows were installed. Weather was in the 70s and dry for 10 days straight, so there was plenty of curing time between coats. All parts were dry when the windows were reinstalled. Even so, the first time I opened two of the windows after they'd been installed & closed for a couple of days, the mating surfaces stuck badly, damaging the paint in one small spot. Both primer & paint were top of the line Sherwin-Williams stuff. Finish coat was a satin finish exterior latex. I've always figured latex paint takes a month to dry. I did some metal garage doors this summer. Door sections have an overlap. Left the overlaps separated and let dry for a day. Put petroleum jelly on the joints. Worked out well. p.s. Another thing I often use on a multitude of things I don't want to stick is a piece of waxed paper. Clamping things that were glued is a frequent flyer. |
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