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#1
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Blistered wood door
We just restained our front door to revive the look. It took 2 days to dry
with the humidity. We then applied two coats of fast-drying polyurethane. After the 2nd coat, we closed the door with the early evening sun hitting the door. A few hours later we noticed several bubbles on the door. Not sure what caused this or best method to fix. Suggestions? Thanks, Larry |
#2
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Blistered wood door
On Jul 8, 9:21 pm, "CME4FUN" wrote:
We just restained our front door to revive the look. It took 2 days to dry with the humidity. We then applied two coats of fast-drying polyurethane. After the 2nd coat, we closed the door with the early evening sun hitting the door. A few hours later we noticed several bubbles on the door. Not sure what caused this or best method to fix. Suggestions? Thanks, Larry On outside wood only Marine products should be used if you want them to last. You probably rushed the job , coats were improperly aplied. |
#3
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Blistered wood door
CME4FUN wrote: We just restained our front door to revive the look. It took 2 days to dry with the humidity. We then applied two coats of fast-drying polyurethane. After the 2nd coat, we closed the door with the early evening sun hitting the door. A few hours later we noticed several bubbles on the door. Not sure what caused this or best method to fix. Suggestions? Thanks, Larry If you read the label on your varnish can it probably said to 'let dry overnight', 'x number of hours' or similar. Some PU formulations have solvents that tend soften the partially cured first coat. The fix is obvious, strip the failed fiinsh, let the stained door dry for a week, and refinish with a quality spar varnish from a paint store that knows what they're selling. They can also supply a quality stripping product as well. Take your time to do it right and the results will be just fine. HTH Joe |
#4
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Blistered wood door
CME4FUN wrote:
We just restained our front door to revive the look. It took 2 days to dry with the humidity. We then applied two coats of fast-drying polyurethane. After the 2nd coat, we closed the door with the early evening sun hitting the door. A few hours later we noticed several bubbles on the door. Not sure what caused this or best method to fix. What caused it was the heat from the sunlight. The way to fix it is to sand and apply another coat of your finish. -- dadiOH ____________________________ dadiOH's dandies v3.06... ....a help file of info about MP3s, recording from LP/cassette and tips & tricks on this and that. Get it at http://mysite.verizon.net/xico |
#5
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Blistered wood door
dadiOH wrote:
CME4FUN wrote: We just restained our front door to revive the look. It took 2 days to dry with the humidity. We then applied two coats of fast-drying polyurethane. After the 2nd coat, we closed the door with the early evening sun hitting the door. A few hours later we noticed several bubbles on the door. Not sure what caused this or best method to fix. What caused it was the heat from the sunlight. The way to fix it is to sand and apply another coat of your finish. You *were* talking about small, pinhead size bubbles, weren't you? If yes, above is correct. If not - if they are LARGE bubbles - then it depends. It is possible that the stain wasn't completely dry and/or that the top coat was incompatible with it. In that case, remedy is the same...sand and topcoat. -- dadiOH ____________________________ dadiOH's dandies v3.06... ....a help file of info about MP3s, recording from LP/cassette and tips & tricks on this and that. Get it at http://mysite.verizon.net/xico |
#6
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Blistered wood door - Thanks to all
Thanks to ransley, Joe, and dadiOH. I went to Home Depot and they had a
marine polyurethane. I have sanded the door, wiped it down and letting dry before applying. This one says four hours but I will let it go eight if needed. Appreciate all your comments. Larry |
#7
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Blistered wood door - Thanks to all
On Jul 9, 12:18 pm, "CME4FUN" wrote:
Thanks to ransley, Joe, and dadiOH. I went to Home Depot and they had a marine polyurethane. I have sanded the door, wiped it down and letting dry before applying. This one says four hours but I will let it go eight if needed. Appreciate all your comments. Larry IME, with "normal" PU, reasonable RH, and no direct sun, the choice after the first PU coat is let it dry until surface no longer tacky, or overnight, before next coat. And, if overnight, very gentle fine sanding or steel-wool between coats. Bubbles? What bubbles? It's also a Real Good Thing with big pieces like doors to lay them horizontal before applying. Unless you like saggy bits, or can apply really light coats (which dry faster anyhow.) YMWV. J |
#8
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Blistered wood door
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#9
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Blistered wood door
CME4FUN wrote:
We just restained our front door to revive the look. It took 2 days to dry with the humidity. We then applied two coats of fast-drying polyurethane. After the 2nd coat, we closed the door with the early evening sun hitting the door. A few hours later we noticed several bubbles on the door. Not sure what caused this or best method to fix. Suggestions? Thanks, Larry Hot sun caused it ... the varnish/paint dries to film before solvents evaporate, solvents are trapped beneath the film. If you have to recoat it, try to shade it...just sheets of foil, taped somehow to shade the door, will keep the heat off until it is completely CURED (longer than "dry"). Also, a good idea not to close it tightly until it is cured, or at least a couple, three days. Good vacation project ) |
#10
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Blistered wood door - Thanks to all
CME4FUN wrote:
Thanks to ransley, Joe, and dadiOH. I went to Home Depot and they had a marine polyurethane. I have sanded the door, wiped it down and letting dry before applying. Wiped it down with what? ________________ This one says four hours but I will let it go eight if needed. You'll let it go 4(8) hours before you do what? If you'll re-read the instructions I think you'll find that you need to add additional coats within four hours of each other. If not, you have to wait longer and sand before applying more coats. -- dadiOH ____________________________ dadiOH's dandies v3.06... ....a help file of info about MP3s, recording from LP/cassette and tips & tricks on this and that. Get it at http://mysite.verizon.net/xico |
#11
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Blistered wood door
"Norminn" wrote in message news:m9uki.5949 Hot sun caused it ... the varnish/paint dries to film before solvents evaporate, solvents are trapped beneath the film. If you have to recoat it, try to shade it...just sheets of foil, taped somehow to shade the door, will keep the heat off until it is completely CURED (longer than "dry"). Also, a good idea not to close it tightly until it is cured, or at least a couple, three days. Good vacation project ) I agree with this. If you stained the door a dark color and have a large glass in the storm door, it is amazing how hot it can get in the sun. Metal door that are dark colors can give you a nasty burn. Keep the door open for a time to keep the sun from hitting it directly. Keep in mind that while the urethane may be "dry" in four hours, it is not fully cured for about 2 weeks. Keep it cool until then. |
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