Water Damage On Plaster Walls

Ready mixed compound will not be hard enough and is vulnerable to any residual moisture in the wall material.

Water damage on plaster walls.

Outside damage caused by bad guttering or roofing will inevitably end up with water cascading down the same part of a wall causing long term damage. When you hit lath stop the bit won t go through wood pull out the bit and drill another hole about 3 inches from the first and about 2 inches from the crack. The source of the moisture must be eliminated before replastering the damaged area. Try to be as gentle as possible but if the damage is deep you ll need to get the blade in to dig out any soft material.

As such water is a plaster wall s enemy. If you re not sure of the cause of a damp patch on a wall try the foil test. After that long expensive process. Using a 3 16 inch masonry bit drill a hole in the plaster about 2 inches from the crack.

Use the steps in my post how to. You may reach this stage without any noticeable water stains but when this happens a portion of the plaster will have to be removed and patched. Take away all material that is bubbling flaking or peeling using a putty knife. After some investigation we learned we needed a new roof on the building and brick pointing overall.

Water damage on plaster wall. Dry the wall surface with a fan heater then tape some kitchen foil tightly over the affected. 2 gypsum plaster gypsum plaster is not good at withstanding damp conditions. The repair process on this page can be used to repair water damage to the surface layers of plaster walls and ceilings.

Next remove the damaged plaster. Drill into the plaster photo by david carmack. Patch plaster to repair the damaged sections. Plaster walls are uncommon in newly built homes but if you live in an old house some of your walls may be made of lath and plaster.

Bubbling plaster bubbling plaster. To make plaster walls plaster is applied wet to a wooden lath wall structure and allowed to harden. When salts from the masonry substrate come in contact with water they migrate to the surface of the plaster appearing as dry bubbles or efflorescence. About a year after we moved into our apt on the top floor of a five story co op we started noticing water damage on one wall of our bedroom.

How to repair plaster walls 1. Plaster that has gotten wet is best repaired using setting type joint compound also called mud. The second step in this guide on how to repair water damaged plaster walls is to remove the damaged plaster.