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A: Some prefer to put joint compound in a ‘mud pan’ (like a bread-making pan), and use what is called a broad knife, which is a wide putty knife. Beyond a 3 inch putty knife, you pretty much start calling them broadknives. I like to use a 10 inch one. it is wide enough. Too wide a knife and you wind up with a weird flex in the blade that can leave hump and ridges in your mud at overlap points.

Others will use what is called a ‘hawk’ (which is a flatboard ontop of a short stick, and then use a trowel with it (like what you use for cement). IMO, the hawk and trowel is good for ceilings as you can catch slobber that falls, towards your face for one thing.

For walls, I like the feel of the control I get using a broadknife vertically on the wall. Something about grabbing the handle of the trowel and pulling sideways bothers me.

So get yourself a 5 gallon pail of ‘lightweight’ ready mix joint compound. It sands easier. Too bad for you, trying to learn mudding by skim coating an entire wall is not easy for the first time. Mudding is like learning how to ride a bike – the training wheels thing, etc. The idea is so you don’t have to sand a ton of mud back off! Unfortunately, you can bet on you are going to have to do a lot of sanding.

Therefore you also need a sanding pole and sanding screen and/or those sanding sponge blocks. I love those things. They come in different grits. Get them all.

You also might consider getting one of those halogen floodlights that you can sit on the floor that adjusts, and has like a 300 watt skinny lamp bulb in it. As you mud, and especially as you sand, you want to cast the light on the wall at an acute angle so that you can see any waves, high spots, low spots, gouges, etc.

Source

A:  I taught myself to repair drywall with the assistance of people on the gardenweb forums. It is a DIY project, but there are a couple tricks you need to know about, especially since you are going to be painting. First, paint the damaged drywall with oil based primer. Then skim coat with drywall mud, sand, skim again, sand again, and maybe even a third time. Once it is smooth and the way you want it, prime again with oil based primer.

But most of the on-line advice fail to tell you about the importance of using the oil based primer, and using it twice. It acts as a shield, first between the damaged drywall and the drywall mud, and then the second time as a shield between the drywall mud and your latex paint. If you don’t use it, you can end up with the repaired area having a slightly different sheen from the rest of the wall.

A: Here’s some more advice he gave me when I could not face the prospect of removing the tightly applied wallpaper (someone did a good job on that!) from a very long narrow hallway, especially after the first few strips I took down damaged the drywall as you described. He said to sand down the torn edges and seams of the wallpaper so it’s flush, then apply Gardz. He then skimcoated. Then I added another layer of Gardz and painted. After we were done, you couldn’t tell there was ever wallpaper there. After all, drywall itself is basically paper, and if you can prevent the wallpaper from buckling and coming down from the moisture, why not. Gardz supposedly makes a hard seal on the surface.

Source:
Gardenweb.com

A: Prime the whole thing with Kilz. Then skim coat, sand, and repeat until the walls are smooth. Then prime and paint. This sounds like a lot of work, but it’s the best way to get nice walls again.

A: We’re in the process of doing this to our entire house. Have two rooms finished. You do NOT want to remove the paper down the to the “chalky surface” that is the drywall, stop one layer above that. When you have removed as much of the paper and as you can manually, I recommend sanding the rest of the glue off the wall. I used a drywall sander ($40 rental 8 inch circular sander hooked – 150 GRIT- up to a shop-vac – NO DUST). Once smooth I primed the walls with latex primer to smooth out any grain that was showing, then with oil based primer to seal it (Zinser). Then the skim coating process begins. It depends how smooth you want it to be, I working diligently doing a full skim coat and the walls are near perfect. First coat to fill large gaps, second coat to smooth walls, third coat as finish coat and final quick sand with 220-grit. But I am mildly obsessive-compulsive which helps here.

A: I also had this mess to deal with. I ended up peeling the first layer of drywall off – to the brown paper, sanding off the fuzzies, sealing with primer, patching gouges/uneven spots and then hanging paintable wallpaper. The walls look great and it was very economical. The only cost was for 1 roll of wallpaper, the primer and a sanding block.

A: The brown paper can be sealed down tight with Gardz made by Zinser. You will need to remove the loose stuff and then apply it very heavy until it won’t take any more then let it dry and the paper won’t bubble any more. The nice thing is it is a waterborne product. Then proceed with whatever you want to put over it to smooth it out.

Sources:
http://www.thriftyfun.com/tf275142.tip.html
http://www.fauxforum.com/viewtopic.php?t=3609

In most homes, there are usually one or two nicks, dings or holes in the walls that need attention. If the damage doesn’t extend all the way through the drywall, then the fix is simple. Just remove any loose plaster or paper around the edge and apply some drywall spackle. Wait for it to dry, sand the area and apply another coat if needed. Sand it again when dry and that will do it.  Read more…