Sherwin Williams

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Interior Exterior
ALLIGATORING
Description

Cracking in the paint film surface that resembles the scales of an alligator.

POSSIBLE CAUSES
  • An alkyd, or other rigid coating, was applied over a flexible, acrylic coating.
  • The recommended recoat time was not followed.
  • Normal aging of an oil-based paint has resulted in a loss of paint film elasticity. The coating can no longer expand and contract.
RECOMMENDATIONS
  • See Lead Information for warnings.
  • Completely remove old coating by scraping and sanding, or by using a power washer and appropriate paint stripper.
  • Apply one coat of Pratt & Lambert® Multi-Purpose Waterborne Primer.
  • Finish with 2 coats of Accolade® Exterior 100% Acrylic Latex.
BLISTERING
Description

The appearance of bubbling, which is often the result of trapped moisture and/or a lack of adhesion.

POSSIBLE CAUSES
  • Trapped moisture or solvent underneath the coating.
  • Painting in direct sunlight.
  • The use of a solvent based coating over a damp substrate.
  • Dew, high humidity or rain prior to the proper cure of the paint film.
  • Painting over a contaminated surface or other bond breaker.
RECOMMENDATIONS
  • See Lead Information for warnings.
  • Allow sufficient time for blisters to go down. Determine the source of the moisture and eliminate the problem by installing proper ventilation and caulking all openings.
  • If blisters do not go down, remove them by scraping and sanding.
  • Apply one coat of Pratt & Lambert® Multi-Purpose Waterborne Primer.
  • Finish with 1-2 coats of Accolade® Exterior 100% Acrylic Latex.
CHALKING
Description

The formation of powder on the surface of the paint film.

POSSIBLE CAUSES
  • The natural film erosion of an alkyd coating.
  • The use of a low-grade or highly pigmented exterior paint.
  • The failure to apply the coating at recommended spread rates.
  • Erosion of factory finished aluminum/metal siding.
RECOMMENDATIONS
  • See Lead Information for warnings.
  • Remove as much chalk as possible through the use of a household detergent and stiff bristle brush, and rinse thoroughly, or use a power washer.
  • Apply one coat of Pratt & Lambert® Multi-Purpose Waterborne Primer.
  • Finish with 1-2 coats of Accolade® Exterior 100% Acrylic Latex.
CRACKING/FLAKING
Description

Splitting of a paint film through at least one coat. Initially may appear as a hairline crack but often results in complete flaking of paint chips.

POSSIBLE CAUSES
  • Use of a poor quality paint that lacks proper adhesion and flexibility.
  • The failure to apply coating at recommended spread rates.
  • Inadequate surface preparation.
  • Aging oil-based paint that has become too brittle.
RECOMMENDATIONS
  • See Lead Information for warnings.
  • Power wash to remove as much loose paint as possible.
  • Scrape the remaining paint and edges smooth.
  • Apply one coat of Pratt & Lambert® Multi-Purpose Waterborne Primer.
  • Finish with 1-2 coats of Accolade® Exterior 100% Acrylic Latex.
EFFLORESCENCE
Description

Salt deposits found on the surface of coatings caused from moisture passing through mortar or masonry.

POSSIBLE CAUSES
  • Inadequate surface preparation.
  • Excessive moisture present.
  • pH Level too high or lack of appropriate cure time.
RECOMMENDATIONS
  • See Lead Information for warnings.
  • Remove by brushing with a wire brush or power washer and rinse thoroughly.
  • Eliminate source of moisture entering concrete.
  • Apply one coat of Pratt & Lambert® Multi-Purpose Waterborne Primer.
  • Finish with 1-2 coats of Accolade® Exterior 100% Acrylic Latex.
FADING
Description

Lightening of the paint’s color, usually caused by exposure to light or heat.

POSSIBLE CAUSES
  • The use of a low-grade exterior or an interior paint.
  • Applying colorant to a white paint not intended to be tinted, or overtinting a light or medium base.
  • Deep colors and bright reds and yellows are more vulnerable to fading.
RECOMMENDATIONS
  • See Lead Information for warnings.
  • Power wash to remove chalk and other contaminants.
  • Spot prime any bare areas with one coat of Pratt & Lambert® Multi-Purpose Waterborne Primer.
  • Finish with 1-2 coats of Accolade® Exterior 100% Acrylic Latex.
FROSTING
Description

A white, crystalline deposit on a coating’s surface normally consisting of sodium and calcium salts. Tends to occur in the spring and fall months when the weather is cooler with higher humidity. These conditions tend to draw the salts in the paint film onto the surface. It is most visible on dark colors and is often mistaken for efflorescence on masonry.

POSSIBLE CAUSES
  • Tends to form in protected areas (such as under eaves) that do not receive the cleansing action of rain and dew.
  • Cool, damp conditions within 24 hours of application.
  • Excessive extender pigments in the paint or primer.
RECOMMENDATIONS
  • See Lead Information for warnings.
  • Frosting should be completely removed by wire brush (masonry) or sanding (wood).
  • Thoroughly rinse surface and allow to dry.
  • Apply one coat of Pratt & Lambert® Multi-Purpose Waterborne Primer.
  • Finish with 1-2 coats of Accolade® Exterior 100% Acrylic Latex.
MILDEW
Description

Black, gray or brown spots occasionally found on the surface of paint or other surfaces in damp, shaded areas.

POSSIBLE CAUSES
  • Tends to grow in areas that are damp, and receive little or no direct sunlight (basements).
  • Use of a poor quality interior grade paint in high moisture areas, such as bathrooms or kitchens.
  • Use of an alkyd or oil-based coating, which tend to be more susceptible to mildew growth.
  • Failure to use the appropriate primer before painting.
  • Painting over existing mildew.
RECOMMENDATIONS
  • See Lead Information for warnings.
  • Mildew must be completely removed by scrubbing with a solution of 1 part bleach to 3 parts water, or with an appropriate mildew cleaner (be sure to protect skin and eyes.)
  • Rinse surface thoroughly and allow to dry.
  • Apply one coat of Pratt & Lambert® Multi-Purpose Waterborne Primer.
  • Finish with 1-2 coats of Accolade® Exterior 100% Acrylic Latex.
NAIL HEAD RUSTING
Description

The stains from nail heads bleed through on to the paint surface.

POSSIBLE CAUSES
  • Non-galvanized iron nails were not countersunk and filled over, and have begun to rust.
  • Galvanized nail heads have begun to rust after sanding or excessive weathering.
RECOMMENDATIONS
  • See Lead Information for warnings.
  • Countersink all nail heads and fill with a top quality siliconized acrylic caulk.
  • Spot prime each nail head area with Steeltech® Universal Alkyd HP Primer (S4751/S4752) or Steeltech® Universal Acrylic HP Primer(Z6631/Z6633).
  • Finish with 1-2 coats of Accolade® Exterior 100% Acrylic Latex.
PEELING
Description

The detachment of paint from the surface in ribbons or sheets, often the result of poor adhesion.

POSSIBLE CAUSES
  • Moisture seepage through uncaulked openings, leaks in roof or walls, excessive interior moisture, etc.
  • Improper surface preparation.
  • Use of a poor-quality paint.
  • The use of o latex paint over several layers of old alkyd or oil paints. The expansion and contraction of the latex coating may put added stress on the old coats of alkyd causing a loss of adhesion with the substrate.
RECOMMENDATIONS
  • See Lead Information for warnings.
  • Identify and eliminate any moisture source.
  • Properly prepare the surface by removing all loose paint.
  • Apply one coat of Pratt & Lambert® Multi-Purpose Waterborne Primer.
  • Finish with 1-2 coats of Accolade® Exterior 100% Acrylic Latex.
POOR ALKALI RESISTANCE
Description

The loss of color and paint film integrity on fresh masonry.

POSSIBLE CAUSES
  • The masonry substrate has not fully cured.
  • A primer, which tolerates a high pH level, was not applied.
  • Improper surface preparation.
RECOMMENDATIONS
  • See Lead Information for warnings.
  • Allow masonry surfaces to cure for a minimum of 30 days (a full year’s cure is ideal) before painting.
  • If a full cure is not possible, apply Pratt & Lambert® Multi-Purpose Waterborne Primer.
  • Finish with 1-2 coats of Accolade® Exterior 100% Acrylic Latex.
POOR GLOSS RETENTION
Description

A rapid loss of the finished luster of a paint film.

POSSIBLE CAUSES
  • Use of an interior paint.
  • Use of a low-quality exterior paint.
  • Use of an alkyd or oil-base paint in areas of direct sunlight (oil based paints tend to chalk and lose their luster more rapidly than acrylics).
RECOMMENDATIONS
  • See Lead Information for warnings.
  • Remove as much chalk as possible through use of a household detergent and stiff bristle brush, and rinse thoroughly with a power washer.
  • Apply one coat of Pratt & Lambert® Multi-Purpose Waterborne Primer.
  • Finish with 1-2 coats of Accolade® Exterior 100% Acrylic Latex. The binders in this 100% Acrylic coating are of premium grade and will resist UV radiation.
SURFACTANT LEACHING
Description

All latex paints contain surfactants, which will slowly leach out of the film and wash from the surface undetected. Under certain curing conditions, such as low temperatures or condensing moisture, the leaching process may occur more rapidly and result in a surfactant build-up on the surface.

POSSIBLE CAUSES
  • Cool, humid conditions occur during or shortly after painting. The result is a longer drying time, which allows the paint’s water-soluble ingredients to rise to the surface before the paint thoroughly dries.
  • Moisture, such as dew, settles on the paint film shortly after it has dried.
RECOMMENDATIONS
  • See Lead Information for warnings.
  • Avoid painting in the late afternoon if cool, damp conditions are expected.
  • Sometimes this water-soluble material can be rinsed off rather easily if addressed right away. Generally even the most severe cases will weather off within a couple of months.
  • Surfactant leaching will not affect the long-term durability of the coating.
TANNIN STAINING
Description

Discoloration (staining) found on the paint surface due to moisture carrying the natural tannins from the wood through the paint film. Most commonly occurs with Cedar and Redwood.

POSSIBLE CAUSES
  • Failure to prime and seal the surface before applying the finish coat.
  • Failure to use a primer that is stain-resistant and blocks tannin.
  • Substantial amounts of moisture present in the substrate, which will carry the stain to the paint surface.
RECOMMENDATIONS
  • See Lead Information for warnings.
  • Eliminate any possible sources of excess moisture.
  • Thoroughly clean the stained area and allow to completely dry.
  • Apply 1-2 coats of Pratt & Lambert® Multi-Purpose Waterborne Primer or Pratt & Lambert® Multi-Surface Oil Primer, which are most effective for tannin blocking.
  • Finish with 1-2 coats of Accolade® Exterior 100% Acrylic Latex.
WAX BLEED
Description

The wax used in the manufacturing of hardboard siding migrates to the surface of the paint.

POSSIBLE CAUSES
  • Failure to apply a proper primer/sealer prior to painting.
  • The use of a dark color, which absorbs heat. The waxes found in hardboard tend to be more active at higher temperatures.
  • Allowing hardboard siding to remain uncoated for several months.
RECOMMENDATIONS
  • See Lead Information for warnings.
  • Prime all bare composite board within 30 days with Pratt & Lambert® Multi-Purpose Waterborne Primer.
  • Factory primed boards should be finished within 90 days of installation.
  • Finish with 2 coats of Accolade® Exterior 100% Acrylic Latex.
WRINKLING
Description

Paint film appears creased or rough.

POSSIBLE CAUSES
  • Paint applied too thickly, thus causing the surface film to dry before the underlying layers. This can cause the dry film to move and wrinkle.
  • Painting of a hot surface or in hot weather.
  • Rain, dew, fog or high humidity levels occur during or shortly after painting.
  • Not following recommended recoat times.
  • Improper surface preparation.
RECOMMENDATIONS
  • See Lead Information for warnings.
  • Remove wrinkled coating by sanding and/or scraping.
  • Assure substrate to be coated is at an appropriate temperature.
  • Apply one coat of Pratt & Lambert® Multi-Purpose Waterborne Primer. Assure primer is completely dry before proceeding to the finish coat.
  • Finish with 1-2 coats of Accolade® Exterior 100% Acrylic Latex.