Cracks are unattractive in walls.
Whether drywall, plaster or concrete, walls are susceptible to cracks. Even walls in newly-built homes are prone to cracks, which normally occur from settling. Homes are constantly settling as different construction materials expand and contract at different rates. Fluctuating humidity levels, soil movement and shallow foundations are typically responsible for settling. Although most cracks in walls are innocuous, certain cracks indicate serious structural damage. Regularly inspect cracks in walls for certain signs to determine whether the cracks require professional attention.
Instructions
Cracks in Drywall and Plaster Walls
1. Analyze the direction of the crack first. Vertical and horizontal cracks in drywall or plaster walls typically indicate drying and shrinkage, which is normal after construction. Jagged cracks, stair-step cracks and 45-degree angle cracks generally signify structural movement or settling issues that are occasionally serious but usually harmless.
2. Measure the width of cracks with measuring tape. Typically, wider cracks signify more serious issues than thinner cracks. Cracks less than 1/8-inch thick are considered stress cracks and are harmless, while cracks 1/4-inch wide and larger are often more serious.
3. Inspect the position of the crack after measuring its width. Long, horizontal cracks that extend along the joints where interior partition walls and upstairs ceilings connect generally signify roof truss issues, which cause ceilings to detach from walls. These cracks are serious and require professional attention. Small cracks located above interior windows or doors are usually harmless.
4. Check whether water is leaking into the crack. If drywall or plaster surrounding the crack feels damp, you may have a water infiltration issue. Never take chances with cracks that leak because these are sometimes serious.
Concrete Walls
5. Study the direction of the crack to determine its seriousness. Vertical and diagonal cracks in concrete walls typically indicate foundation movement. If a vertical crack widens at the top or bottom, the wall is either settling or gradually heaving, which may present serious issues. Stair-step cracks may also signify heaving. Horizontal cracks in concrete walls, however, indicate poor wall designs or pressure buildup behind the wall. Concrete walls containing horizontal cracks are serious issues.
6. Measure the width of cracks with measuring tape. Regard each the same way as cracks in drywall and plaster
7. Inspect the position of the crack after measuring its width. Short, thin cracks around windows are typically harmless and require no attention. Stair-step cracks that start at the corners of windows or doors generally signify that foundations are either settling or heaving and may present serious issues.
8. Check whether water is leaking into the crack. If the concrete surrounding the crack feels damp or contains white powdery stains, you may have a water infiltration issue. Leaking cracks in concrete require immediate attention.
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