Frosting

Exterior Paint Solution

 
 

Frosting: A white, salt-like substance on the paint surface. Frosting can occur on any paint color, but it is less noticeable on white paint or light tints. On masonry, it can be mistaken for efflorescence see Efflorescence and Mottling.

Possible Causes:

Forms mostly in protected areas (such as under eaves and on open porch ceilings) that do not receive the cleansing action of rain, dew and other moisture.

Use of dark-colored paints that have been formulated with calcium carbonate extender.

Application of a dark-colored paint over a paint or primer containing calcium carbonate extender.

Solution:

Frosting can be a stubborn problem. It often cannot be washed off readily. Moreover, the condition can recur even as a bleed-through when a new top coat is applied. In extreme cases, it can interfere with adhesion. The best remedy is to remove the frosting by wirebrushing masonry or sanding wood surfaces; rinse, then apply an alkyd-based primer before adding a coat of high quality exterior paint.

 

Interior Paint Problems

 

Exterior Paint Problems

Blistering

Burnishing

Blocking

Caulk Failures

Cracking - Flaking

Foaming - Cratering

Lapping

Mud Cracking

Mildew

Picture Framing

Poor Scrub Resistance

Poor Sheen Uniformity

Poor Stain Resistance

Poor Flow - Leveling

Poor Hiding

Roller Marks - Stipple

Roller Spattering

Sagging

Surfactant Leaching

Wrinkling

Yellowing

 

Alligatoring
Blistering

Chalk Run down
Chalking
Cracking Flaking

Dirt Pickup
Efflorescence - Mottling
Fading-Poor Color Retention
Frosting

Lapping

Mildew

Nailhead Rusting

Paint Incompatibility

Peeling
Poor Galvanized Metal Adhesion
Poor Alkali Resistance
Poor Gloss Retention

Surfactant Leaching

Tannin Staining

Vinyl Siding Warp

Wax Bleed

Wrinkling

 

 

 

 
 
 
 
 

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