How Do You Do Knockdown Drywall Finish?
Knockdown texture requires applying a spattered pattern of joint compound to the surface of drywall and is the last step before priming and painting the drywall. Applying knockdown texture requires a special tool that uses air pressure to force the joint compound through a nozzle and against the wall, creating the irregular patterns inherent to the finished knockdown texture. Spraying the joint compound on the wall is only half the process. The second half involves a standard tool used while taping the drywall. Thin the all-purpose joint compound by pouring clean water into the compound with the 1-gallon bucket. Thin the compound to the consistency recommended in the usage instructions for the spray gun. Turn on the air compressor and set the pressure per the spray gun manual recommendations. Stand the large piece of scrap plywood against a wall, fill the hopper of the spray gun with thinned all-purpose joint compound and spray the plywood with the spray gun. Adjust the spray gun as ne