by Rainbow | Sep 10, 2020 | Painting Tips
[vc_row][vc_column][vc_column_text] Efflorescence consists of soluble salts formed on the surface of plaster or brickwork by the evaporation of water. They usually show as loose white powder or as feathery crystals. Occasionally they appear as a hard glossy deposit...
by Rainbow | Sep 10, 2020 | Painting Tips
Subjective term used to describe the lightening of the color of a pigmented paint following exposure to light, heat, time, temperature, chemicals, etc. The observed fading may result from deterioration of the pigment, the vehicle/binder, or from a decrease in gloss. A...
by Rainbow | Sep 10, 2020 | Painting Tips
Appearance of a denser color or increased gloss where wet and dry layers overlap during paint application. Possible Causes: Failure to maintain a “wet edge” when painting. Use of a low solids “economy” paint. Solution Using a Rainbow pure...
by Rainbow Paints | Sep 10, 2020 | Painting Tips
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. On masonry, it can be mistaken for efflorescence (see Efflorescence and Mottling). Possible Causes: ...
by Rainbow Paints | Sep 10, 2020 | Painting Tips
Formation of bubbles (foaming) and resulting small, round concave depressions (cratering) when bubbles break in a paint film, during paint application and drying. Possible Causes: Shaking a partially filled can of paint. Use of low quality paint or very old acrylic...
by Rainbow | Sep 10, 2020 | Painting Tips
Normally this is caused due to insufficient cement being mixed into the plaster. It can also been caused by too much moisture in the substrate that has not been allowed to escape. Solution: Ensure that the surface is dry. Brush the friable plastered areas with a...
