If you try to knock down the texture when the patch section is ready, the texture on the existing paint will be too wet and will simply smear out into an indistinguishable mess. Finish coat mud on the repair tends to suck moisture out of the texture and hasten it's dry time.īecause of this problem, when you are trying to find the perfect time to knock down your texture you are faced with the following dilemma. When texturing a repair, you have to spray at least some texture lightly over part of the surrounding painted section to blend the new texture with the old.īlobs of texture sprayed over the painted portion will set up much slower than those sprayed directly over the patch. The main problem with spraying knockdown texture on a patch is that the area surrounding the repair is usually painted. The problem with knockdown texture on drywall patches
Scratches and tool marks in a knockdown texture are nearly impossible to fix so it is best to avoid them in the first place. If the mud has set too much before knocking it down, it will tend to chunk up and may even leave scratches and dried clumps of mud that drag through the leftover blobs. If the mud has not set enough, it will smear easily, causing the small blobs to smooth out into a large thin island.
To do a good knockdown drywall texture you have to be able to reliably estimate the moment when the mud has set just enough but not too much before knocking it down. As explained below, the best way to effectively match knockdown texture is not to knock it down at all. Whether the repair is a result of cracks in drywall seams, screw pops, holes, nicks, dents and scratches, corner bead blowout or anything else, matching knockdown texture is the most difficult part of the repair. Drywall repairs are inevitable and once the repair is floated out, you have to try and match the existing texture so it does not look like a patch. One of the biggest challenges of working with knockdown texture is trying to match an existing texture.
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