Bubbles caused from a loss of adhesion and lifting of the paint film from the underlying surface.
POSSIBLE CAUSE
Painting in direct sunlight on a surface that is too warm can cause heat blistering.
Moisture
blistering can be caused by water migrating from the inside, through a
wall to the exterior, pushing the paint off of the surface.
Application of oil-based or alkyd paint over a damp or wet surface.
Exposure of latex paint film or dew, high humidity, moisture, or rain shortly after paint has dried,
Especially
if there was inadequate surface preparation and/ or poor ventilation in
areas such as kitchens and bathrooms, Damp basements.
Moisture seeping into the home through the exterior walls.
Insufficient surface preparation, painting over a contaminant that the coating cannot adhere to.
SOLUTION
If
blisters go down to the substrate, the cause is likely to be moisture
escaping from the surface. Remove all loose paint by scraping or other
method and sand the surface to smooth out any rough edges. Determine
and repair any cause of excess moisture before repainting. Repair old
or damaged caulking of install new caulking as needed, install vents or
exhaust fans or siding wedges to allow the moisture a path to escape
without going through the paint.
If
blisters go down to an earlier coating, remove all loose paint by
scraping or other methods, and sand the surface to smooth out any rough
edges. Sand any glossy surface dull. Allow sufficient drying time after
cleaning.
SYSTEM
INTERIOR
Primer, if needed PrepRite Classic Primer, or PrepRite Wall & Wood Oil
Primer/Undercoater
Caulk ProSelect 1230A, C-1100A, or Kitchen & Bath
Finish Refer to our Interior Paint Rating Chart to determine which product best fits your needs.
