Mildew

Interior Paint Solution

 
 

Mildew: Black, gray or brown spots or areas on the surface of paint or caulk.

Possible Cause:

Forms most often on areas that tend to be damp, or receive little or no direct sunlight (bathrooms, kitchens and laundry rooms).
Use of an alkyd or oil-based paint, or lower quality latex paint.
Failure to prime a bare wood surface before applying the paint.
Painting over a substrate or coating on which mildew has not been removed.

Solution:

Test for mildew by applying a few drops of household bleach to the areas; if it is bleached away, the discolorant is probably mildew. Remove all mildew from the surface by scrubbing with a diluted household bleach solution (one part bleach, three parts water), while wearing rubber gloves and eye protection. Rinse thoroughly. To protect against mildew, use a top quality latex paint, and clean when necessary with bleach/detergent solution. Consider installing an exhaust fan in high moisture areas.

 

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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