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Drywall Sanding

Posted on Sunday, March 28, 2010 in Construction

Drywall Sanding
 Drywall Sanding
I’m building a closet at the bottom of my stairs, how do I tie in the new to existing drywall?

The back of the closet will be an existing wall while the front and sides will be new. Its for storage so I haven’t decided whether I’ll finish the inside yet. I do want this to look good and I’ve put up drywall before, I’ve just never joined it to existing drywall. Should I sand down the existing drywall before using compound to remove the paint or just use the mud right over it?

If the paint is somewhat glossy, do a light sanding on the painted part to “key” the surface to accept mud and paint. No need to completely strip the paint. The keying process also helps prevent air bubbles from popping up in the mud that goes over the painted part. After this, just apply mud and tape as normal.

If you are joining two panels in the same plane, you will need to spread out the hump created by taping. Do this with a quick setting mud like Durabond 45. Spread a 10″ wide swath next to the tape on each side. Cut your edges by pressuring the knife to one side. After this sets up apply another coat of mud, this time pre-mixed lightweight all purpose joint compound. The 2nd coat should be less thick and it is really just for smoothing out the first coat.

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Drywall Sanding

How to Repair Small and Medium Sized Holes in a Drywall

The beauty of modern walls such as drywalls (also known as wallboard, gypsum board, or Sheetrock) is that even if you get holes in them, fixing or patching these walls is easy. Believe me, it’s no rocket science and you just need some hardware materials and a great deal of patience to pull the job off.

Whether you’re repairing a small or medium sized hole, the techniques used are similar. Small and medium sized holes can be ½-inch to 6 inches in diameter. The smaller the hole, the easier it can be fixed, and the less time it takes.

For Small Holes

Small holes up to ½ inch across can be patched easily using a drywall compound. Other than cleaning the surrounding wall area, you don’t need a lot of preparation to fix holes this small.

1.    Use a hammer or to tap the wall around the hole to create a slight depression. Alternately, you can also use the rounded edge of the screw to tap it more accurately.

2.    Fill in the hole with the drywall compound. For really small holes, a single coating is needed.

3.    Once it dries off, lightly sand off the area.

For Medium Sized Holes

Repairing holes up to 6 inches in diameter will take more steps, although the process is still relatively easy. The trick here really is to get the gap covered and make the repair as “invisible” as possible.

1.     Buy the needed materials from a home improvement store. For this job, you will need a peel-and-stick drywall patch, some drywall compound, utility knife, sanding paper, and a taping or putty knife. The patch that you can buy is usually made of a stiff metal backer covered with an adhesive mesh.

2.    Prepare the hole area by cutting off any loose paper or loose pieces of gypsum with a utility knife.

3.    Peel off the backing paper covering the adhesive, and position the patch over the hole. Use a taping knife to stick the patch firmly over the hole.

4.    Apply a generous amount of drywall compound into the patch, making sure that the compound presses the patch into place.

5.    Give the first coat about 24 hours to dry off, then apply another coating of the compound.

6.    When the second coating has dried off as well, sand the area carefully. Using a fine-grit paper, sand the patch smooth, “feathering” out the rough edges so that the compound blends into the existing drywall.

Dry sanding can get really dusty so you may have to use vacuum cleaners that have special sanding screen attachments to clean of all the dust. Alternately, you can also opt to use wet sanding but you have to avoid rubbing off the compound too much, else you’d need to do the job all over again.

7.    Lastly, you need to prime and paint the patch to keep moisture away and make the repair job even more invisible.

Drywall fixing is also an art more than simply repair — get the task done as smoothly as possible so that you deceive the eye into thinking that no repair has been done at all. So what are you waiting for? Get on with the job and do your magic!

If you are looking for a handyman in Eagan, MN be sure to visit the Eagan handyman directory for a list of contractors that can help you with your home repair needs.

About the Author


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Stanley Complete Drywall (Paperback)


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9093 - Fine/Medium, Drywall Sanding Sponge, Ideal For Sanding Compounds Used In Spot Repairing, Grit On Both Sides.


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Complete step-by-step instruction to build or repair walls and ceilings. Basic techniques to plan, select, cut, hang, tape, and sand drywall. Professional drywall techniques for corners, curved walls, arched ceilings, and specialty finishes. Pre-start checklists, pro tips, and photos give homeowners confidence to tackle advanced projects.

Drywall 4th Edition (Paperback)


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The revised version of Drywall gives readers information on new tools and materials and techniques that Myron has field-tested since the last revision in 2008, and for the first time the book also includes a bound-in DVD with tips and techniques for hassle-free drywall installation. Drywall, 4th Edition offers the very latest information with the familiar easy-to-use format that made the first three editions such great successes.

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Meguiars 2000 Grit Sanding Block

Meguiars Sanding Pad E7200


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Improve your sanding results with Meguiars sanding pad. Meguiars Sanding Pad provides a cushioned surface between your hand and the sandpaper. The sanding pad is soft and flexible to conform to the shape of your vehicle. The sanding pad is easy to grip and reusable. Wrap the sand paper around the sanding pad to provide an even surface against the paint. (If you use your fingers, you?re likely to apply more pressure with your index and middle fingers, resulting in uneven results.) The Meguiars Sanding Pad distributes the pressure of your hand over the 5 3/8 inch pad. Get smooth, even results!

Professional Drywall Panel Lift


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3M Rubber Sanding Block


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3m Rubber Sanding Block . Uses a 2 3/4” x 9” sheet, which is 1/4 of a standard 9” x 11” sheet of sandpaper, or 1/2 of a ”Long & Skinny.” Hold paper securely during wet or dry sanding.

Installing Drywall in Your Garage : Final Sanding & Inspection When Hanging Drywall


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