I need to spray knockdown texture over some new sheetrock to match as
closely as possible the pattern on adjacent walls and ceiling. Can anyone
give me a link or breakdown on what's involved. No problem renting a
sprayer but I have no idea what else I'll need especially in terms of
quantity of mud to buy and how to prep it for spraying.
You can buy the knockdown texture in pre-mixed cans. 1 can doesn't go
very far and it's expensive (about $10 a can). I can't remember how
much it covers - pretty close to a 4 x 8 sheet of drywall, but it's a
cinch to use and matches perfectly. Spray it on and drag a taping
knife or wide putty knife across it to knock it down. I used it once
to match a new piece of drywall on my ceiling and it worked great. You
can also buy it in larger quantities that you mix with water and use a
sprayer on. Look in the paint aisle at Lowes or Home Depot and your
problem will be solved.
Homax makes a hand operated sprayer that I've used for knock down
texture and popcorn ceiling texture. Works well if the mud/texture is
mixed to the right consistency. It needs to be able to flow "just
right". The description of pancake batter or oatmeal just doesn't cut
it. Some like it thick and some like it runny. If the product doesn't
flow to the sprayer, it needs to be thinner. If the product runs down
the walls or drips from the ceiling, it needs to be thicker.
Experiment. You'll want to try it on a scrap piece anyway.
There is also the hopper style sprayer that attaches to an air
compressor. This is cheaper, assuming you already own an air
compressor. Mud/texture consistency is the same as above. This unit
will let you cover a lot more area for the effort. 20 square feet is
about all I prefer with the hand held unit (the one with a gallon sized
Now that I think about it, mud consistency of store-bought applesauce
is close to what you want.
I have sprayed hundreds of textured ceilings here in Charlotte N.C. but
knock down texture is a new one to me.
Those spray cans are great for small patches but otherwise mix it yourself
with a 3/4 drill and a beater bar (I use a 30 gallon plastic barrell) and
set my air pressure between 30 to 50 psi
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