Rated 3.3 out of 5 by 39
Rated 4.0 out of 5.0 by TexasManny Very Pleased, but read for full understanding
I purchased this product to restore a 12"x76" section of drywall that was replaced in a kitchen after removal of tile, and outlet relocations required the removal of the section. I watched several YouTube videos of this product to gain knowledge of it and how it worked before I purchased it. I read some of the reviews and saw folks had some difficulties, so here is what I learned about using the product.
First, read the packaging thoroughly. Re-read to make sure you understand exactly what the instructions say. Shake the can upside down. If you think you shook enough, shake some more. Even after that, shake a little bit more. Depending on the size of your job, work in small sections. Each time you do a section, shake the can again for several minutes. Intermittent mixing is necessary.
You must allow 1-2 minutes once the product is on the wall to "dry". How humid your work area is will have an impact on this time. The more humid it is, a little more time is necessary before knocking down. You will have to gauge this as you work.
Spray from a distance minimum of 6-8". Do not get closer or you will "blob" up the works and it will not perform as stated on the can. Work in an up and down motion, in columns. Once finished in your section, wipe the nozzle but be careful not to hit the trigger or more your settings.
Use a flat blade knockdown trowel around 6-8 inches. Dip the trowel in warm water, and shake the water excess off, but make sure the blade is still wet. It should have a sheen of water on it, no more than that. Lay the trowel as parallel to the wall surface as you can and let the handle simple lay in "U" of your thumb and pointing finger socket. Let the natural weight of the trowel do the work. No force is necessary.
Let the trowel come down and it will knock the sprayed material down very nicely. You will know if you pressed too hard if the sides of the trowel caused a line mark as you travel down the wall area. No problem. Move the trowel over so that 1/3 of the trowel overlaps the line where the knockdown ended on the previous pass, and repeat the process. It will smooth itself out.
Here are pictures of the finished result. You cannot tell the difference between the original knockdown and the replacement. It blends in perfectly.
I did have other areas to do on adjacent walls in the kitchen which were equal to the 12"x76" drywall I replaced. The 25% can had less than a quarter can left when I was done. Application was MEDIUM and according to instructions. I believe the stated area coverage on the can is a little overstated, as the manufacturer's application style may not be the same as yours. Judge your job accordingly and purchase what you need. You can always return to your Home Depot any unused, undamaged product, in original sale condition for a refund.
I hope this review helps someone who needs to do his/her repair job. Take your time, read the instructions, shake, shake, shake, work in small areas. Do not rush, but take your time, and your project will come out like a pro.
March 13, 2016
Rated 1.0 out of 5.0 by Abh3 Not What You Expect
Poor design of pressure/volume controls result in frustration. The instructions are just plain wrong on how long to wait to knock-down product, you need to wait as long as it takes to set up. But the controls are worthless, can't get product to spray yet it drools down the can despite manic shaking, not worth the effort!
July 2, 2016
Rated 1.0 out of 5.0 by PJS This stuff is garbage
The product spits out in "balls" and you have to be an inch from the wall to ensure it doesn't land on the floor instead. When you knock it down, it sticks to your tool, no matter how much water you use on the tool. The price is ridiculous, even if it did work.
July 23, 2016
Rated 1.0 out of 5.0 by Handyboy Waste of money
Use as instructed and its like it runs out of pressure. Starts off strong but then it doesn't spray very well. Try clearing it out upside down. Shaking a lot. Eventually it just drools out and is useless. And there is a lot of stuff left in the can.
June 19, 2016
Rated 1.0 out of 5.0 by HG Not worth the Money
Purchased this product on Sunday. Followed all the directions, watched all the video's and should have read the reviews more carefully. Had to repair about a 32 foot linear area that was repaired and needed to be textured. Purchased 2 cans and both ran out of pressure before being empty and as the pressure reduced in the can the spray became erratic. In the end, spent last night removing the texture and will be going back to to see if Home Depot will refund the money.
May 25, 2016
Rated 1.0 out of 5.0 by RM Pure and utter garbage
Do not buy this product unless you like tossing money out the window. 1/4 way through the can and it runs out of propellant. I shook the can for 2 minutes and what ended up on the wall was a runny mess. Tossed the remaining can in the trash. Never again. If I have a small repair I will just break out the knock down gun and air compressor. Don't waste your money folks.
March 6, 2016
Rated 5.0 out of 5.0 by Kevin Wow! I can't tell where I repaired the drywall. Very good product
I'm a homeowner. After reading the reviews, I decided to try this product.
Warm the can in lukewarm water for at least 20 minutes shaking about every 5 minutes. Continue shaking the can after warming for a least a couple minutes while holding it upside down. I used the light spray first and allowed it to dry and then used the medium setting. Let it set for a t least 20 minutes in 70 deg. temperatures before knocking it down. Clean up: After holding the can upside down and clearing the product, I held the nozzle in a container of warm water, pulled the trigger and cleaned the tip. It worked properly the next time I used it.
January 14, 2016
Rated 2.0 out of 5.0 by Handyman Can needs improvement.
I used approximately 5 oz. of the 25 oz. can. Then I turned it upside down and sprayed to clear the nozzle before storing it as the directions state you must do. About two weeks later when I needed to spray more knockdown, I found the can clogged even after turning it upside down and shaking it. After removing the nozzle and using air to clear any material then soaking it in hot water to warm the can it's still clogged. This product is too expensive to fail so easily. I doubt I'd buy the product again if it clogs so easily and is hard to unclog. Judging by some of the reviews, I'm not the only one having a problem with a clogged spray can.
November 3, 2015