Sagging is a downward "drooping" movement of the paint that occurs immediately after application.
Paint that sags leaves a runny, filmy, drippy appearance on the surface. A paint sagging problem can be avoided if you are mindful of these factors:
What Causes Paint Sagging?
- Applying paint too thickly
- Applying paint in cold or humid weather
- Paint that is over-thinned
- Airless spray painting with the wrong tip or the gun held too close to the surface
How to Avoid Paint Sagging
- Sand glossy surfaces before application
- If you notice thick patches of paint while it is still wet, brush or roll it out to distribute it evenly
- If the sagging paint has dried, sand the surface and repaint
- Do not thin the paint
- Avoid applying paint in cool or humid conditions
- Two coats of paint at the recommended spread rate are better than one
- If you plan on painting doors, consider removing them so you can
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