Site conditions are 26 year old house with drywall walls. Appear to have only two prior coats of paint, both coats appeared to be "flat" paint.
I needed to remove a 6'x8' section of drywall around/next to the entrance door to install a new, larger door. Reframesd, put back NEW drywall, taped and plastered. Then I used two coats of quality primer for latex based paints.
The finish was perfect up to this point. The primer covered well and there were no problems.
After 16 hours of dry time on the primer (next day), I applied two coats of "eggshell" finish latex paint.
Over the OLD drywall, I have some blistering, or more like bubbling in the paint. It started with a cluster of small bubbles which appeared to be almost like trapped air (picture pancake batter when you whip it up and pour it on the pan). Some of these joined with each other or grew to about 10-15 quarter (as in pocket change) size bubbles. A few popped and now look like dimples. Some others simply dried and are now like shells.
I will sand the bubbles flat and plaster/prime/paint, just curious if there are any theories on cause? Especially given that the primer went on fine and that this ONLY happened over the existing drywall, not over the new drywall.
Any help is appreciated.
Get Help from Bob Vila
- Give-Aways & Offers
- Monthly Must Do's
- DIY Project Ideas
- Step-by-Step Guides
- Inspirational Photo Galleries