You can find a knockdown knife at a home improvement store, likely near the joint compound mixes.If you’re worried about your technique here, practice on a scrap piece of drywall or plywood first. Light, even pressure will flatten out the peaks of the globules of texture on the wall, but it won’t smear them into each other.If you’re texturing a wall, start at the top corner of the wall where it meets the ceiling, drag the knockdown knife straight down until it’s about 2 ft (61 cm) from the floor, then lift it away.Apply gentle, even pressure, and drag the knife in a completely straight line across the surface, stopping about 2 ft (61 cm) away from the other end or corner. Attach an extension pole to the handle if you need it to extend your reach, then lay the rubber blade flat at one end or corner of the surface area you just textured. Use a knockdown knife with an 18 in (46 cm) rubber blade for this job. Run the knockdown knife over the texture in a straight line, using light pressure. You can find all of these supplies at a home improvement store.For instance, do half the ceiling in the morning, and the other half in the afternoon. If you're texturing an area larger than about 150 sq ft (14 m 2), which is the area of the ceiling in an average room, break up the room into sections and mix up individual batches for each section.Tilt the knife blade slightly-if the mix slides right off, it’s thin enough.

If you’re not sure what pancake batter consistency is, grab a small drywall knife and scoop up some of the mix.If it’s thicker than pancake batter, mix in about 0.5 in (1.3 cm) of water at a time until the consistency is right. Wait 15 minutes, then test the consistency of the mix. Lock a paddle attachment onto a power drill and use it to stir the mixture until there are no lumps. Add 2 in (5.1 cm) of water to a 2 US gal (7.6 L) bucket, then pour in an entire 1.5 US gal (5.7 L) bucket of joint compound dry mix. Mix the joint compound and water until you get a pancake batter consistency.

Brocade knockdown texture roller