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You can test to see if your mist coat has worked by using masking tape after the drying period. Apply masking tape to an inconspicuous area of the wall after the mist coat has had at least 24 hours to dry. Then, peel off the tape. It should come up clear, with no paint residue. If it does have paint residue, you may need to remove the mist coat and try coating the plaster again with a different ratio of paint and water.

Homeowners may choose chalk paint over regular paint if they want to hide all of the wood’s grain, don’t want to apply a large number of coats, and like the extreme matte appearance. Chalk paint is easier to work with than regular paint and adds a unique texture to furniture that regular paint just can’t match. 

The number of paint coats you should apply varies by project, but many jobs call for two coats of paint. Make sure you let the first coat fully dry according to the manufacturer’s instructions before applying that second coat. Luckily, paint from a sprayer dries rather quickly due to the nature of the fine mist created by the sprayer.

The biggest issue with painting your interior walls with exterior paint isn’t the way the paint looks or performs—it’s the lack of ventilation. The higher quantities of VOCs in exterior paint will have a harder time dispersing in an enclosed space, so do everything you can to direct them out—like turning on a fan and opening your windows and doors. Afterward, you can simply prime and redo your walls with interior paint, and no one will know the difference.