Water Damaged Drywall
In major water damage situations such as storms, flooding or backed up sewage lines, drywall quickly wicks up the water into the wall. It’s the same story for insulation. Left untreated, the damp environment in your walls becomes the perfect breeding ground for fast growing and protentional dangerous mold.
In these situations it is very important to act immediately and remove and replace drywall and insulation that has sustained water damage to minimize the risk of dangerous molds.
Before beginning and repair projects, be sure you use all of the proper safety precautions such as eye and breathing protection. Also, follow the EPA's Lead RRP procedures when cutting into drywall in buildings built before 1978 as older buildings may have lead paint,.
First off, you want to remove all the drywall and insulation that has water damage. These materials act like a sponge which makes the drywall become fragile. The insulation then becomes a perfect breeding ground for dangerous molds.
The porous nature of drywall and insulation quickly absorbs water and wicks it up into the wall. So, the actual damage to the drywall, could be much higher than the water level from flooding. In most cases you will want to remove at least 24 inches of drywall from the bottom up.
After you have removed the drywall, you will want to remove any wet insulation as well.
After the damaged drywall and insulation are removed, It is important that the wall cavities, wooden framing and studs are thoroughly dry before replacing insulation and drywall. You can speed up the drying process by simply setting up fans in front of the affected area.
When the area is toughly dry, you are now safe to replace the insulation and drywall.