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Blistering: Bubbles resulting from localized loss of
adhesion and lifting of the paint film from the underlying
surface.
Possible Causes:
Applying oil-based or alkyd paint over a damp or wet
surface.
Moisture seeping into the home through the exterior walls
(less likely with latex paint).
Exposure of latex paint film to high humidity or moisture
shortly after paint has dried, especially if there was
inadequate surface preparation.
Solution:
If blisters do not go all the way down to the substrate:
Remove
blisters by scraping and sanding, and repaint with a
quality acrylic latex interior paint.
If blisters go down to the substrate: Remove the source of
moisture, if possible. Repair loose caulking; consider
installing vents or exhaust fans. Remove blisters as
above, remembering to prime before applying the top coat. |
