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Poor Alkali Resistance

Poor Alkali Resistance

Definition

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

Causes

  • Applying oil-based or vinyl water-based paints to new masonry that has not fully cured

Solutions

  • Allow fresh masonry surfaces to cure for at least 30 days before painting. If this is not possible, use a high-quality, alkali-resistant primer.
  • Test alkalinity of the surface with phenolphthalein or a pH pencil.
  • Paint with a high-quality water-based paint and avoid colors that are alkali-sensitive.

Product Recommendations

Primer

Desired Finish

Recommended Primer

Masonry

EFF-STOP® Premium Interior/Exterior Masonry Primer Sealer

Masonry

SUPER-LOC® Specialty Interior/Exterior Masonry Bonding Primer

Exterior

Surface

Recommended Product

Flat

EVERSHIELD® Exterior 100% Acrylic Flat Paint

Velvet

EVERSHIELD® Exterior 100% Acrylic Velvet Paint

Eggshell

EVERSHIELD® Exterior 100% Acrylic Eggshell Paint

Satin/Low Sheen

EVERSHIELD® Exterior 100% Acrylic Satin/Low Sheen Paint

Semi-Gloss

EVERSHIELD® Exterior 100% Acrylic Semi-Gloss Paint

Gloss

EVERSHIELD® Exterior 100% Acrylic Gloss Paint

Please note that these suggestions are provided as a service to you. We are unable to guarantee or be responsible for the results obtained by these procedures. If you have additional questions, ask any of our expert sales associates.