I am doing some drywall patching. I have some greenboard lying around. Can
I use it to patch some holes where there is regular drywall? I am smooth
coating everything with hot mud. Will it absorb paint differently than
regular drywall and look different?
If you skim coat you can use anything. I just skim coated about 90 SF of
old sheetrock that I removed 3 layers of wallpaper from. What a pain and a
horrible result? But I was advised to prime it with a sealer stain blocker.
I don't know if I needed a stain sealer but the results are good. I am
If you are skimcoating it, it makes no difference. If you do not skim coat
it might make a difference if there is no texturing in the paint as even
using different brands of drywall have different textures. If you use a
thick paint and a heavy nap roller I doubt there would be a problem if you
take your time with the mudding job. Take your sweet time and put 4 or 5
thin coats and end up using a very wide blade for your last 2 coats to blend
it well with the old drywall. After the first coat I like to use
lite-weight compound. It is much easier to work with and I only use the
powder mix. Lately my work has been up to professional quality. Now I have
to work on the speed!
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