Exterior Paint Solution


Blistering: Blistering is the formation of bubbles resulting from localized loss of adhesion and lifting of the paint film from the underlying surface.

Possible Causes:

Painting in direct sunlight or on a surface that is too warm, especially when applying a dark-colored solvent-based coating.

Application of an oil-based or alkyd paint over a damp or wet surface.

Excess humidity or other moisture escaping from inside through the exterior walls (less likely with latex paints, which allow water vapor to escape without affecting the paint film).

Exposure of a latex paint film to excessive moisture in the form of dew, high humidity or rain shortly after the paint has dried, especially if there was inadequate surface preparation and/or a lower quality paint was applied.


First, determine whether or not the blisters go all the way down to the substrate. If they go down to the substrate, the problem may be due to moisture coming from inside. Take steps to remove the source of moisture, if possible. Repair loose caulk and consider installing vents or exhaust fans. If the building has wood siding, install siding vents in areas where blistering has occurred. Remove blisters by scraping and sanding, prime any areas where bare wood shows, and repaint. If the blisters do not go all the way to the substrate, the problem is probably not related to moisture coming from behind. Rather, the blisters are likely from painting a warm surface in direct sunlight or exposing the paint film to excessive moisture. In any case, sand, scrape and then prime any exposed bare wood. Coat with a top quality acrylic latex exterior paint.


Interior Paint Problems


Exterior Paint Problems




Caulk Failures

Cracking - Flaking

Foaming - Cratering


Mud Cracking


Picture Framing

Poor Scrub Resistance

Poor Sheen Uniformity

Poor Stain Resistance

Poor Flow - Leveling

Poor Hiding

Roller Marks - Stipple

Roller Spattering


Surfactant Leaching





Chalk Run down
Cracking Flaking

Dirt Pickup
Efflorescence - Mottling
Fading-Poor Color Retention



Nailhead Rusting

Paint Incompatibility

Poor Galvanized Metal Adhesion
Poor Alkali Resistance
Poor Gloss Retention

Surfactant Leaching

Tannin Staining

Vinyl Siding Warp

Wax Bleed





| Site Map | Add Link Resources | Privacy Policy © 2016 All Rights Reserved.