Uneven gloss with shiny or dull spots on painted surfaces.
Improper or no priming of porous surfaces or surfaces with non-uniform porosity. Poor painting techniques. Painting over fresh paint or primer before it's dry. Uneven film thickness causes poor sheen uniformity. Drying during excessive high/low temperatures.
Always prime new work to make the surface have uniform porosity. Apply the finish coat after proper drying of primer. A new finish coat usually will make the sheen uniform. Always paint from wet to dry and maintain a wet edge to avoid lapping.
PRIMERS & INTERIOR FINISHES
Priming is essential for better adhesion, sheen uniformity, mildew control and durability. Select a top quality interior paint in the color and sheen of your choice.