What is the difference between knockdown texture and popcorn texture for ceilings?
Question:
Answers:
Popcorn texture is just drywall mud that has been sprayed on the wall and then painted over.
knockdown is applied in the same way only after the entire surface has been covered a drywall putty knife is dragged over the mud giving it the knockdown look
Knockdown is sprayed on drywall mud and then flatened down a bit with a knife after drying for a while. It's a bit smoother finsh than popcorn. Popcorn is the rough stuff that you see only on ceilings. Knockdown can also be seen on walls as well as ceilings.
Popcorn texture was mostly infamously used on ceilings made of asbestos and now highly toxic. There are many knockdown textures such as Monterrey drag where the mud is sprayed on, left to dry for a few minutes and then dragged out flat.
Visit Lowe's or Home Depot to learn a few of the basic techniques. For patch work, just buy a $10 can of mud, drag the texture and paint to match.
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