Stucco Cracks and Their Remedies

Stucco is a derivative of cement and is, thus, very susceptible to cracking. When dried, it shrinks and thus stress movements trigger cracks, especially on window corners, doors etc. Cracks impact the building’s appearance which can allow water penetration to weaken the internal framework. Detailed details regarding different stucco fractures, their causes and their remedies, if any, will be given in the following report.You may want to check out Depend Exteriors for more.

There are essentially two basic forms of pressures – internal and external – that trigger stucco cracks. Internal pressures, including drying and shrinking, are attributed to the inherent properties of stucco. The exterior influences of nature, including atmospheric patterns and weak systems, are external pressures.

External fractures consistent with tension contain cracks in shrinkage. In the process, stucco sets down and is dried, creating tiny cracks on the finish coat. This cracks normally look fine until they are more than 1/32″ deep. Flawed stucco application, like varying stucco combination thicknesses and humid, windy conditions during application, often creates these shrinkage cracks.

Stud cracks are vertical fissures primarily triggered by heavy traffic, equipment exterior movements and frequent aggressive closing of doors and windows as well. Map cracks appear like a road map and are caused by the displacement of dimensional unstable sheathing substrates such as plywood and stucco construction. Abrupt and dramatic drops in temperature cause thermal cracks. They are characacters

Structural cracking includes wide open fractures throughout the stucco floor. The cracks are typically lateral. The effect of tension created by a single warped stud is a longitudinal crack throughout the stud. A deflection crack is a horizontal fracture that extends across a wall line. A diagonal crack is considered a re entrant crack from the corner of any rectangle, such as walls.

An annual stucco whitewash is the most common remedy for hairline and small fractures. The lime in the whitewash hardens the stucco and thereby fills the hairline fissures, avoiding some sort of water seepage. In order to render it more waterproof, stucco buildings can even be covered with paraffin or oil mastic.

“The cracks are prepared by brushing a layer of bonding agent such as Larsen’s Weld Crete, TK Products Tri Bond for larger cracks of 1/8” or more. And a Portland cement stucco and acrylic combination mixture is spread to the whole wall surface (compatible with the bonding agent). Another brush coat of Portland cement stucco finish is added on the same day.

Small stucco damages can not be handled right away because fresh fractures will start to occur over time as the building settles in and it needs to be fixed again and again. If, after two years, the fractures have not get bigger, it is the safest time to make the fixes.