Applied to the outer layer of brick paint must be able to 'breathe', ie skip moisture in the brick wall outside, and not to detain her under the film. Secretary of Agriculture does not necessarily agree. Unlike oil, latex paint generally provide a constant. Acrylic paints are resistant to alkaline corrosion resistance to alkaline corrosion is the second most important reason for which is recommended to use 100%-WIDE acrylic paints. The alkalinity of the surface of the wall may have a significant impact on the durability and performance of the paint. Although the bricks are usually chemically neutral solution of brickwork can be alkaline. This means that the use of fresh mortar to repair or replace missing or shaky bricks you should wait at least a month before painting so that the alkalinity decreased. Damage less than a year ago mortar can be caustic and cause a 'burn' or deterioration of the conventional paint binder, followed by salting, as well as cracking and separation.
Nevertheless high-quality paint, manufactured from 100% acrylic binder, resistant to high pH, which allows you to paint again caused the mortar after 30 days. If the paint should be deal earlier this time, you should use an alkali resistant, construction primer. The new mortar is also more prone to salting-out, which can penetrate through the film normal latex paint and ruin the finish. High-quality latex paint for exterior coatings form a protective barrier that prevents the penetration of salts through the film and thus prevent the deterioration of the appearance that is an additional advantage in comparison with cheaper 'standard' colors. In general, despite the fact that high-quality latex paint for exterior coatings are more expensive than conventional latex paints, over time they will be longer maintain the appearance and save time and money because there will be no need for frequent repairs.