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The most common water damage on drywall comes from leaky plumbing fixtures or from a leaky roof. Thankfully, if your drywall has minor damages or stains resulting from water it is very easy to fix.

As long as you don’t need to replace the damaged drywall, here are a few steps on repairing water damaged drywall.

The first step you need to do is to check to see if your drywall is still attached to the framing and studs. Unfortunately, if your wallboard is broken or majorly sagging it will need to be taken down and replaced with new drywall.

If you notice that the sagging is minor, you can try to fix it by using drywall screws. Start on the outer edge of the sag and work your way to the middle. Work slowly to ensure that the screws go into the studs without breaking the surface of the drywall. If you do it correctly, you should be able to snuggly put back the drywall into the proper position.

Now that it is secured, scratch off any loose layers of drywall paint and mud using a putty knife. The moisture from the water damage will have resulted in the paint and mud lose its adhesion. If you notice any mildew or mold, use a mixture of chlorine bleach and water to kill it.

The first sign of water damage will be the visible stains on your drywall. If your drywall isn’t sealed, the stain will bleed through the finish paint. To cover up the stains, find a paint or primer that is specifically designed to seal water stains. These types of paints will include water, oil, and shellac. Use two coats to cover the stains and to prevent it from bleeding through if another leak happens in the future.

Next, use drywall compound to smooth the repaired surface. Try to find a drywall compound that is sold in powder form so you can mix it with water yourself. Doing this will allow you to mix only the amount that you need, you can store it properly in dry places, and it dried fast enough to apply more coats on the same day.

The final step in your water damaged drywall repair is to apply three coats of drywall mud on the affected area. You should use three coats because the first coat will fill the deepest parts of the damage, the second coat levels the damage, and the third coat feathers out the edges of the repair to hide the new patch.

A bonus step includes painting over the new drywall mud. Use a drywall primer, then use a high quality paint for the finish coat. You may be able to apply the paint you used to seal the stain as a primer, but check the label or ask a paint expert first.

For all of your water damaged drywall repair needs, visit The Drywall Tool Source! Browse our selection online and pick the tools and materials you need to properly fix your drywall yourself to get your home looking amazing again. You can also call us at 905-663-7570 or email us at if you have any questions about drywall repair!