EXTERIOR-SolutionsMost paint problems or mistakes can be corrected once you know what caused it. Below are some of the most common exterior paint problems that can occur and tips on how to correct them.


 

alligatoring

ALLIGATORING

Patterned cracking in the surface of the paint film resembling the regular scales of an alligator.

blisteringint

BLISTERING

Bubbles resulting from localized loss of adhesion, and lifting of the paint film from the underlying surface.

chalking

CHALKING

Formation of fine powder on the surface of the paint film during weathering which can cause color fading.

chalkrundown

CHALK RUN-DOWN

The washing down of chalk from an excessively eroding paint onto another area below (a brick foundation, for example), ruining its appearance.

crackflakingext

EXTERIOR CRACKING/FLAKING

The splitting of a dry paint film through at least one coat, which will lead to complete failure of the paint.

dirtpickup

DIRT PICK-UP

Accumulation of dirt, dust particles and/or other debris on the paint film; may resemble mildew.

efflorescence

EFFLORESCENCE

Crusty, white salt deposits, leached from mortar or masonry as water passes through it.

fading

FADING

Premature and/or excessive lightening of the paint color, which often occurs on surfaces with sunny southern exposure.

frosting

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 lighter tints.

lappingint

LAPPING

Appearance of a denser color or ligher gloss where wet and dry layers overlap during paint application.

mildewext

MILDEW

Black, gray or brown areas of fungus growth on the surface of the paint or caulk.

 

nailrust

NAILHEAD RUSTING

Reddish-brown stains and spots on the paint surface.

 

 

paintincompatability

PAINT INCOMPATIBILITY

Loss of adhesion where many old coats of alkyd or oil-based paint receive a latex top coat.

peeling

PEELING

Loss of paint due to poor adhesion. Where there is a primer and top coat, or multiple coats of paint, peeling may involve some or all coats.

pooralkaliresistance

POOR ALKALI RESISTANCE

Color loss and overall deterioration of paint film on fresh masonry.

 

poorgalvan

POOR GALVANIZED METAL ADHESION

Paint that has lost its adhesion to a galvanized metal substrate.

 

poorglossretention

POOR GLOSS RETENTION

Deterioration of the paint film, resulting in execessive or rapid loss of luster of the top coat.

 

surfactleaching

SURFACTANT LEACHING

Concentration of water-soluble ingredients on latex paint, creating a blotchy, sometimes glossy appearance, often with a tan or brownish cast.

tanninstain

TANNIN STAINING

Brownish or tan discoloration on the paint surface due to migration of tannins from the substrate through the paint film.

vinylsidingwarp

 VINYL SIDING WARP

 Warping or buckling of vinyl siding panels that have been repainted.

 

 

waxbleed

WAX BLEED

Stains that come from a waxy substance in the reconstituted wood products used to make hardboard siding.

 

wrinklingext

WRINKLING

A rough, crinkled paint surface occurring when paint forms a "skin."

 

 

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Note
: Images & information provided by The Rohm & Hass Paint Quality Institute.