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#CRACKS ON PLASTER WALLS PROFESSIONAL#
If the tape breaks apart and the crack is bigger, contact a professional architect, structural mason or structural engineer for further investigation. Put some blue painter's tape across the crack and watch it over a three-month period of time.Take a close-up photo of yourself or someone else holding a tape measure that shows how wide the crack is.Measure the length and width of the cracks and write them down.
![cracks on plaster walls cracks on plaster walls](https://images.fineartamerica.com/images/artworkimages/mediumlarge/3/aged-brick-wall-with-cracked-plaster-juhani-viitanen.jpg)
Use this three-step procedure to evaluate the cracks in your plaster walls: You should watch cracks in your plaster over a period of time. Today, headers are still ganged together with 2-inch x material, but advances in construction have demonstrated that they are stronger when laid above the door or window on their edge.
![cracks on plaster walls cracks on plaster walls](https://thumbs.dreamstime.com/b/old-wall-cracked-plaster-38047323.jpg)
Many historic header beams were two 2 x 4 inch or 2 x 6 inch boards nailed together and laid over the window or door on their face. Historic houses often have headers that were either undersized or installed in ways that were not as strong as they could be. Headers are designed to support the weight of the wall above.
#CRACKS ON PLASTER WALLS WINDOWS#
Windows and doors have a beam above them called a header. These locations tend to sag or fail first because they are intended to support heavy loads from above. Plaster cracks that are 1/16 inch or wider and diagonal plaster cracks signal that your structure is moving more than normal. Diagonal plaster and even drywall cracks most often appear above doors and windows, in corners and around fireplaces and chimneys. You can conceal a hairline plaster crack by digging debris out of the crack, taping it and re-plastering the area. Hairline cracks can appear regularly in areas where the plaster was laid on the walls a bit thinner or where there's a structural beam. As this process happens, your house or building will creak and move.
![cracks on plaster walls cracks on plaster walls](http://i1.ytimg.com/vi/cUEF0pUWaz8/maxresdefault.jpg)
Whether you have a masonry building or a wood framed house, your building materials will take in and let out moisture. Hairline cracks happen as a house contracts and expands. Small hairline cracks rarely signal a structural problem. In order to evaluate the severity of cracks in your plaster, you must understand the difference between hairline cracks and wide or diagonal cracks. A diagonal plaster crack coming off the corner of an interior door is a sign the floor has sagged.
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