- 1). Clean the sanding dust off all drywall surfaces to be painted. Use a shop vac with a long enough brush attachment extension to reach the ceiling, or tack cloth mounted to a sanding pole. Clean the tack cloth when it builds up dust. Do a thorough job, or the dust will ball up and show through the paint. Use the tack cloth to clean the tops of window and door trim.
Spray paint the room first with a primer base coat to seal and prepare the surface. - 2). Cut in your corner and ceiling angles, along the floor and around trim with a high-quality painter's brush with the bristles cut at a slant. Don't try to save money on a cheaper brush; you won't like the results. Finish cutting in before spraying and rolling the primer coat. After spraying, when rolling the primer in the corners and angles, let the roller edge go into and touch the opposite corner side. Use the brush to smooth out the contact area. Use more care when cutting in before applying the final finish coats.
- 3). Use an airless sprayer for multiple room or large room painting jobs. Get one from a rental center if it's not economical to buy one. Hook your 5-gallon buckets of paint up to the sprayer. Stop painting before the bucket's empty and add the leftover paint to the next bucket. Using an airless sprayer is the quickest, most efficient way to paint drywall. Have a second person follow behind the sprayer with a roller, smoothing out the paint. Let it dry for a day before applying the finish coat.
- 4). Cut in all corners and angles with your finish coat paint. Paint your final coats onto the drywall using a combination of an airless sprayer followed by a second person back-rolling behind the sprayer for the smoothest, highest-quality paint job. For best results, roll the paint "against the grain," or in the opposite direction of the strokes of your last coat. For a consistent finish, don't use a short hand roller; attach it to a pole and use long, even strokes. When rolling, paint out of a 5-gallon bucket with a bucket grid hanging on the inside. Dip your roller, then roll one stroke on the grid to get rid of excess paint to avoid dripping, especially on ceilings.
- 5). Apply two coats of finish paint for a professional-looking job. Use gloss or semi-gloss paint in kitchens or bathrooms. It cleans more easily and is more resistant to staining. Use flat paint for ceilings and closets. Also use flat paint in high-use areas that will get bumped and marked up--it is easier to touch up. Do a good job using quality paint and tools and your rooms will look good for many years before needing to be repainted.
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