Need advise from a professional painter?

Question

I had my house painted a few years ago, only to notice before the painters waranty of a year the paint began to peel. Yes its still peeling from  the siding of pressed wood. Painted with porter paint. About 20 percent peeled in places slowly and is really noticeable when it rains you can see the humidity underneath and paint separating.
In no way could a person scrap off the entire paint job. I touch it up occasionally. How and why did this happen? The only solution I am able to think of is to take a pressure washer to it and next repaint with a different kind of paint. I would value your opinion alot thank you.

CoolCat · Accepted Answer

It's one of two things.
Most likely a bad prep job or moisture behind the siding.

If the original coating was oil base paint or oil base stain for instance, the  painter should have lightly sanded, primed and then painted with oil or latex.
If the orig coat was oil base and not primed, and the new coating was latex (water-base) the new paint will not adhere well and soon start to lift off.

Or, there is moisture behind the walls. Moisture behind a wall will make the paint lift off too. The moisture may becoming from inside the home if there is no vapor barrier in the walls.

It is definitely a long and tedious job but you can take your time and do it over months.  Also, you will be dealing with paint dust, some of which may be dangerous, keep that in mind and wear a dust mask if you do this yourself.

http://www.hereandthere.org/oldhouse/removing-exterior-paint.html
http://architecture.about.com/library/bl-preservationbrief-paint07.htm

At this point, you need to remove as much of the paint as possible. If you think it's all gonna eventually start to lift/peel then it all should be removed. Possibly down to the bare wood.
This can be done with chemical strippers or heat and best left to a professional.

Then you can start again with the proper exterior primer and 2 coats of good quality exterior paint.

Or, when down to bare wood, if the wood looks good, you could apply a coat of exterior water base stain. Stain goes on easily and does not chip or peel. Use semi-transparent if  you like that option.

Talk to a professional with a large reputable company. At least to get an idea what you're dealing with so you don't waste any time and money trying to fix before understanding the problem.

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Need advise from a professional painter?

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