Water Damage On Plaster Walls

The source of the moisture must be eliminated before replastering the damaged area.

Water damage on plaster walls.

After that long expensive process. Dry the wall surface with a fan heater then tape some kitchen foil tightly over the affected. 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. 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 repair process on this page can be used to repair water damage to the surface layers of plaster walls and ceilings. 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. 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. To make plaster walls plaster is applied wet to a wooden lath wall structure and allowed to harden.

Patch plaster to repair the damaged sections. 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. The damage that water causes to plaster walls depends largely on the. Next remove the damaged plaster.

Use the steps in my post how to. How to repair plaster walls 1. Bubbling plaster bubbling plaster. As such water is a plaster wall s enemy.

Using a 3 16 inch masonry bit drill a hole in the plaster about 2 inches from the crack. After some investigation we learned we needed a new roof on the building and brick pointing overall. 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. 2 gypsum plaster gypsum plaster is not good at withstanding damp conditions.

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. Plaster applied to a masonry wall is vulnerable to water damage if the wall is constantly wet. Ready mixed compound will not be hard enough and is vulnerable to any residual moisture in the wall material. The second step in this guide on how to repair water damaged plaster walls is to remove the damaged plaster.

Once the water damage becomes severe then the plaster will begin bubbling and bulging. Take away all material that is bubbling flaking or peeling using a putty knife. If you re not sure of the cause of a damp patch on a wall try the foil test.