The problem is many painting contractors do not approach painting cedar siding the right way.
Cedar siding paint bubbles.
Cedar siding can be one of the most resilient beautiful materials that you can put on your home.
Do remove all failing.
After four tries sometimes with and without repriming the result is the same.
Allowing fresh siding to weather for as little as two weeks negatively affects coating adhesion.
The paint that is bubbling is pulling all the underlying layers of paint right off the grooved cedar shingles.
Now that he s done we have noticed a progressively growing number of paint bubbles blisters.
Here are the do s and don ts of painting cedar siding.
If you do it right painting cedar siding can last for a long time.
Cutting out the blisters priming and repainting solves the problems in those areas but then new bubbles pop up nearby.
Blistering paint is identified by small to medium sized bubbles or blisters under the paint film.
Test results from the forest products testing lab run by the usda for the forest service show that after 12 weeks of exposure to sunlight cedar siding has lost half of its ability to hold a film forming coating system like primer and paint.
Sanding priming and repainting as bubbles appear or strip off all the paint that s bubbling and start.
Plus often the new color is darker than the original causing the siding to heat up in the sun reactivating the old layers.
I mostly do restorative exteriors which is the complete removal of paint from the siding sand oil prime and two top coats of latex 100 acyrlic.
The old paint s is allowing the gasses out but the new paint is too stretchy and impermeable to these gasses.
Bubbling occurs then gasses or liquids try to escape and get blocked by the new paint.
The took off all of the paint layers down to the primer over the cedar siding.
Paint versus stain on cedar siding.
These are mainly on the west side of the house but all sides now have at least a few.
It is most commonly seen on wood siding and trim.
The rooms behind the siding are bedrooms and a library office without any plumbing.