your current location:Home > service > Problems

Alkali poor

 Alkali poor: a new film on the substrate faded brick and comprehensive deterioration phenomenon.

 15.jpg
Possible causes: the lack of a full year of new masonry substrates cured coating of oil paint or styrene-acrylic latex paint. New masonry substrates often contain strong alkaline lime. Lime had the opportunity to fully reflect the carbon dioxide in the air before, masonry substrate always very strong alkaline that would undermine the integrity of the film.
 
Workaround: Before painting, masonry substrate allows curing at least 30 days, the best time of the year. If conditions do not permit, the painter first high alkali sealer or latex primer before painting high quality 100 percent acrylic exterior latex paint. These coatings capable of reaching 100% acrylic binder alkali attack.