Use a drywall sander to sand the ceiling.
Drywall panels offer a smooth ceiling surface, suitable for painting or texturizing. The panels, composed of tightly compressed gypsum particles and covered with paper, attach to the ceiling with special drywall screws. After installing the panels, and applying tape and to fill the seams where the panels connect, you must sand rough spots left behind.
Instructions
1. Put on protective eyewear. You'll be sanding overhead, and drywall dust and debris can easily fall into your eyes. Because drywall sanding is very dusty, you'll also need a respirator mask.
2. Attach a drywall sanding screen to a drywall pad. The rectangular screen is slightly longer than the pad, so wrap the edges around the back of the pad. Secure them tightly with the attached screws.
3. Screw the extension pole into the drywall pad handle. You can use a solid extension pole or an adjustable one that allows you to lengthen the pole to suit your ceiling height.
4. Start in one corner of the ceiling. Sand back and forth with the sanding pad, focusing most of your effort on the seams and the areas over the screw holes, where joint compound was applied.
5. Work your way across the ceiling to the opposite side, sanding a 3-foot-wide swath. When you reach the other side, repeat, going in the opposite direction, on the next 3-foot section.
6. Continue going back and forth across the ceiling, until you've sanded the entire area.
Tags: across ceiling, back forth, , extension pole, joint compound