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Dynamic Cracks and Bad solutions

Posted by Brian Ewing on March 29th, 1998 12:05 PM
In reply to new product for plaster wall repair by Joe Kulis on March 26th, 1998 11:10 PM [Go to top of thread]

If your walls or ceilings are going to crack----they're gonna crack. It doesn't matter if you use drywall, these new-fangled systems or steel re-inforcement.

The problem with these systems really is the fact that they are claiming that you will not get anymore cracks by using it. What they are really doing is inviting a law suit.

As a house, or any building, ages the wood that makes up the framing and trusses dry out and expand and contract with the climate. This inevitable reaction to the environment cause movement. And this movement of the wood causes the plaster to move with it and crack.

By applying the fiber-glass mesh over these types of walls and ceilings just creates a headache when it comes time to repair the cracks that are bound to develop under the fiber-glass. You'll know that the cracks have come back because there will be a hump in the face of the wall where the crack is.

Now that you have to repair the crack you have the added headache of having to remove sections of the fiber-glass and fix the crack.

The best method of fixing these cracks is to open up the crack about six inches or so and installing a strip of metal (galvanized) lath. then replaster the area and apply a new skim coat.

The lath will reinforce the crack in the best manner that can be done effectively na dlast the longest.

One draw back could be that the crack may develop elsewhere because the area where you patch was the area of least resistence fo rthe movement. Now that you have reinforced this area the stresses will move on over sometimes. however, this is still the best method.

If you are interested in a more detailed explanation of patching cracks you can go to my web site and look up the plaster discussion Bulletin Board. There you can find many posts regarding patching cracks. Look especially for the "How to patch cracks in plaster thread".

Also, while you are there look for the thread "The problem with fiber-glass over cracks".

Use the link below to go to the main page at Tuscany Village".

Brian Ewing

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