If you don’t locate the source of the moisture prior to doing the repair, the problem will just keep coming back. Wear gloves, safety glasses and a dust mask while looking for and repairing the leak. Depending on how long the leak has gone unrepaired, there could be mold present. If there is an extensive amount of mold, hire a professional to remove it safely.

Use a one to one water and bleach mixture to try to blot the stain away. Be sure to wear safety glasses and gloves when you apply it. If that doesn’t work, wait until it dries completely and simply primer and paint the stain to match your ceiling. As long as the drywall is intact and the leak is repaired, you’re done![3] X Research source

If you only need to remove a small portion of the ceiling, use a keyhole saw or similar tool to remove the affected area. If the damage is extensive, you may need to use the claw end of a hammer or a crowbar to remove all of the damaged material. Ensure all stained drywall is removed and that any material remaining is dry and not sagging. Clean the area with household cleaner to ensure mildew and mold does not develop.

Cut a portion of drywall that is the same approximate size as the area you cut out of the ceiling. If the hole you are patching is small, simply place the newly cut drywall into the hole, then use drywall joint compound to fill the gap and serve as glue to keep it in place. Use a putty knife to ensure it is flat and even. If the hole is larger, you may need help holding the replacement drywall in place while you use the joint compound to fill the gap and set. Allow the drywall joint compound to dry thoroughly, then use fine sand paper to ensure it is flat and even.

Many hardware stores can match the color for you if you provide them with a sample. Repainting the entire ceiling will ensure the color matches throughout. Adding a layer of shellac before you primer can help seal the repair.

Make sure to wear protective equipment as you do repairs in the event mold has grown due to the moisture. If your popcorn ceiling was installed prior to 1979, it may contain asbestos. In such a case, it may be better to contact a professional to conduct the repairs.

Try using a one to one water and bleach mixture to remove light stains. Make sure to wear protective glasses and gloves while applying the mixture. For darker aesthetic stains, simply primer the spot to seal it and cover it with a matching shade of ceiling paint.

Remove the popcorn material from the affected area with an extra inch or so on each side. Scrape it until only the flat drywall is visible. The drywall may also have water damage on it. Wear safety glasses and a dust mask to protect yourself from the falling material. [10] X Research source

If the drywall is merely stained, you can seal it with a product like KILZ paint that will prevent the damage from spreading and serve as a seal. [11] X Research source The damaged drywall will not be visible after you apply new popcorn material. If the water damage to the drywall is substantial, follow the repairing a drywall ceiling steps above to repair it.

If you repaired the drywall, ensure it is dry, sanded and clean so the popcorn material has a sound surface to stick to. Use the ready-made popcorn material that comes in a tub. The spray can be difficult to control for small applications. [12] X Research source Try your best to match the thickness and texture of the existing popcorn material on the ceiling.

Ensure you have identified and repaired the source of the moisture. Failing to do so will result in needing to do further repairs. Wear gloves, safety glasses, and a dust mask to protect yourself from the possibility of mold. Rotten wood will need to be replaced.

Always wear protective equipment when operating power tools. Be careful not to sand in an uneven fashion so as to make any defined lines or textures in the wood. Once you have sanded the damage away, apply a sealer or stain to the wood.

If the water stain is black, this method may not work, but the darker colors could draw less attention to the damage. Some forms of wood cannot be repaired due to discoloration and any wood that is soaked entirely through will need to be replaced.

Wear protective eye wear as the bleach is a fluid you will need to apply above your head. Use a sponge or rag that’s damp with clean water to wipe the bleach mixture on the ceiling in a controlled manner. Once you have finished bleaching, mix one part white vinegar and two parts water in a spray bottle and spray it at the bleached area to neutralize the remaining bleach.