plaster walls

clancybFebruary 18, 2007

Hello!

Our home was built in the 1930's. Our walls are plaster and wire. In the past 6 months, we have noticed a lot of cracking on our walls. We have tried patching them with plaster patch and spackle like compound. Nothing is working! In one of our rooms, it looks like the walls are shattered but they are not cracked or chipped. Any suggestions? I am starting to worry that we have a serious problem. Thanks in advance!

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mightyanvil

It is often caused by a central girder in the basement dropping due to rot at the supports but it could be due to any structural settlement like footings, joist bearing points, etc.

It is also often due to modifications to the structure not properly designed. Plumbers are notorious for cutting joists.

Hire a professional builder or engineer to look at it ASAP.

    Bookmark   February 19, 2007 at 8:29AM
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ezra

Clancyb,
Older houses shift over time, naturally developing cracks in the walls as the plaster breaks loose from the wooden lath behind it. The only way to fix the problem is to reattach the plaster to the lath behind it. Plaster repair professionals generally spend enormous amounts of time reattaching the plaster with hundreds of screws and plaster washers, then covering these screws with mesh tape. The process is tedious and, if not done properly, leaves bumps in the wall.

Luckily, there is a new method for repairing cracked plaster walls. The method uses an special adhesive, rather than screws, to effectively 'glue' the plaster back in place. It's been featured by Tom Silva on 'This Old House' (see the Plaster Repair Video) and makes plaster repair much easier and faster.

For more info check out www.plastermagic.com

Here is a link that might be useful: Plaster Repair Adhesive

    Bookmark   January 28, 2009 at 3:37PM
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brickeyee

The adhesive can only fill gaps, it will not correct any bulges that have show up.

    Bookmark   January 28, 2009 at 5:19PM
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sombreuil_mongrel

ezra, the OP has plaster over wire lath. There's nothing for any glue to reattach the plaster to.
OP: you have plaster from the generation where the very hardest surface was executed. It's harder, so it's also more brittle. It seems like something is afoot in the framing to allow this hard plaster to fracture in the way you describe. If, OTOH, the white coat was separating from the brown coat, that would indicate a water problem.
Casey

    Bookmark   January 28, 2009 at 7:41PM
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