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Posted by Mark on October 19, 2009, 7:52 pm
> At the end of September, we repainted our house which was newly
> constructed 9 1/2 years ago. We are in Northern California in the Bay
> Area. The weather when it was painted was sunny but cool and dry. We
> used Benjamin Moore Low Lustre acrylic Paint for the wood siding and
> the Benjamin Moore Semi Gloss acrylic for the trim. The painter power
> washed the house and waited about 1 day to dry before painting.
> A little over a week after the painting was completed, there was a
> big storm and the rains came down quite hard for the whole day. The
> next morning, we saw thousands of bubbles clustered around the lower
> part of the window trims (especially the sills), on the recaulked
> seams, bases of our columns and doors. Bubbles also appeared at the
> seams of the sidings and edges of windows that were recaulked and
> painted over. The next day after the rains dissipated, the bubbles
> disappeared except for a few spots.
> Here are pictures of some of the problem areas at
> http://picasaweb.google.com/sheepgirl888/PaintProblem#
> Most of these pictures were taken when the bubbles first appeared.
> Pictures of a column with a quarter taped to the column was taken
> after we tried to recreate the problem.
> I am asking the painter to come back to look at the problem. The
> weather has been nice and dry since. We have tried to recreate the
> bubbling by running water over the multiple problem areas for at least
> 15-20 minutes, but can only recreate the bubbles in a smaller size on
> the columns. Is there another way to recreate this scenario so that we
> can show the painter what happened?
> My questions are:
> 1. What would have caused that? Inappropriate preparation before
> the painting?
> 2. Somebody suggested that because it usually takes a few weeks
> for the paint to completely dry, that bubbling occurred because the
> paint job had only a week to dry? Is this true?
> 3. Under the bubbles which formed and now have dried out, is there
> still moisture trapped in there. Will this keep reoccuring with every
> rain? And if it does, will this eventually cause damage to the wood
> trim and siding?
> 4. What should we ask the painter to do to fix the problem
> correctly and prevent future problems?
> Thanks in advance for all of your suggestions.
> K
I've had a similar problem without having power-washed the house. It is
generally simply the hard rain so soon after painting. In my case, left
alone the bubbles shrank (shrunk?) back and adhered fine. There were a few
areas where they were particularly bad that there were some that left 'sags'
that you only saw when looking really close.
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Posted by norminn@earthlink.net on October 25, 2009, 10:47 am
Hun-Yue Wong wrote:
> At the end of September, we repainted our house which was newly
> constructed 9 1/2 years ago. We are in Northern California in the Bay
> Area. The weather when it was painted was sunny but cool and dry. We
> used Benjamin Moore Low Lustre acrylic Paint for the wood siding and
> the Benjamin Moore Semi Gloss acrylic for the trim. The painter power
> washed the house and waited about 1 day to dry before painting.
>
> A little over a week after the painting was completed, there was a
> big storm and the rains came down quite hard for the whole day. The
> next morning, we saw thousands of bubbles clustered around the lower
> part of the window trims (especially the sills), on the recaulked
> seams, bases of our columns and doors. Bubbles also appeared at the
> seams of the sidings and edges of windows that were recaulked and
> painted over. The next day after the rains dissipated, the bubbles
> disappeared except for a few spots.
>
> Here are pictures of some of the problem areas at
> http://picasaweb.google.com/sheepgirl888/PaintProblem#
> Most of these pictures were taken when the bubbles first appeared.
> Pictures of a column with a quarter taped to the column was taken
> after we tried to recreate the problem.
>
> I am asking the painter to come back to look at the problem. The
> weather has been nice and dry since. We have tried to recreate the
> bubbling by running water over the multiple problem areas for at least
> 15-20 minutes, but can only recreate the bubbles in a smaller size on
> the columns. Is there another way to recreate this scenario so that we
> can show the painter what happened?
>
> My questions are:
> 1. What would have caused that? Inappropriate preparation before
> the painting?
> 2. Somebody suggested that because it usually takes a few weeks
> for the paint to completely dry, that bubbling occurred because the
> paint job had only a week to dry? Is this true?
> 3. Under the bubbles which formed and now have dried out, is there
> still moisture trapped in there. Will this keep reoccuring with every
> rain? And if it does, will this eventually cause damage to the wood
> trim and siding?
> 4. What should we ask the painter to do to fix the problem
> correctly and prevent future problems?
>
> Thanks in advance for all of your suggestions.
>
> K
>
I had not looked at your photos prior to posting last time. The
captions of your photos give inportant clues....leads me to believe more
that the main issue is that the wood did not dry sufficiently after
being pressure washed. Most important clue leading to that conclusion
is that blisters appear to occur more at seams and end grain....water or
solvent absorbs more quickly into the end grain than into rest of
surface. One day between pressure washing and painting is not enough,
whether wood or masonry surface. Needs at least two days of dry
weather, preferably longer. Given that important error, I would expect
that the painter took other shortcuts. Painting too soon over caulking
may also be an issue. Do you have a written contract? Painter is
licensed? Painting in hot sun may also be a factor, as the paint skin
forms too quickly and traps solvent/water (depends on type of paint)
before it escapes via normal curing.
It's my belief that any contracted work that is unsatisfactory should be
addressed in writing to the contractor...write a nice business letter,
clearly list your concerns and the date on which the problem became
evident, and send letter certified mail to the contractor.
With so much blistering, and blisters so close together, I would expect
the paint to peel in those areas.
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Posted by norminn@earthlink.net on October 25, 2009, 10:51 am
PS: How did you "recreate" bubbling two weeks later? Wet surface and
paint over? Wet with forceful stream water?
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> constructed 9 1/2 years ago. We are in Northern California in the Bay
> Area. The weather when it was painted was sunny but cool and dry. We
> used Benjamin Moore Low Lustre acrylic Paint for the wood siding and
> the Benjamin Moore Semi Gloss acrylic for the trim. The painter power
> washed the house and waited about 1 day to dry before painting.
> A little over a week after the painting was completed, there was a
> big storm and the rains came down quite hard for the whole day. The
> next morning, we saw thousands of bubbles clustered around the lower
> part of the window trims (especially the sills), on the recaulked
> seams, bases of our columns and doors. Bubbles also appeared at the
> seams of the sidings and edges of windows that were recaulked and
> painted over. The next day after the rains dissipated, the bubbles
> disappeared except for a few spots.
> Here are pictures of some of the problem areas at
> http://picasaweb.google.com/sheepgirl888/PaintProblem#
> Most of these pictures were taken when the bubbles first appeared.
> Pictures of a column with a quarter taped to the column was taken
> after we tried to recreate the problem.
> I am asking the painter to come back to look at the problem. The
> weather has been nice and dry since. We have tried to recreate the
> bubbling by running water over the multiple problem areas for at least
> 15-20 minutes, but can only recreate the bubbles in a smaller size on
> the columns. Is there another way to recreate this scenario so that we
> can show the painter what happened?
> My questions are:
> 1. What would have caused that? Inappropriate preparation before
> the painting?
> 2. Somebody suggested that because it usually takes a few weeks
> for the paint to completely dry, that bubbling occurred because the
> paint job had only a week to dry? Is this true?
> 3. Under the bubbles which formed and now have dried out, is there
> still moisture trapped in there. Will this keep reoccuring with every
> rain? And if it does, will this eventually cause damage to the wood
> trim and siding?
> 4. What should we ask the painter to do to fix the problem
> correctly and prevent future problems?
> Thanks in advance for all of your suggestions.
> K