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STUCCO CRACK REPAIR
We all know how frustrating it can be to find hairline cracks showing up on our stucco homes or commercial buildings. Unfortunately, stucco cracks are a reality in the stucco business. However, we should not condemn stucco because of tiny, hairline cracks that appear in only a few places; stucco has so many outstanding qualities it is impossible to beat.
A crack in cement plaster is nothing more than stress relief on the stucco membrane. The most common points of stress in a stucco wall are at the corners of window frames, door jambs, and other openings. All buildings are subjected to a variety of stresses in various forms and this stress is often transferred to the plaster stucco membrane which is why the Stucco is not and never was intended to be a structural material, and while Portland cement stucco is similar to concrete in that they both have similar ingredients, stucco cannot be compared and required to meet the American Society for Testing and Materials (ASTM) testing standards of structural concrete or load bearing masonry. Cement stucco is a relatively thin, brittle shell over a framed structure and can crack if the stresses are transferred and overcome the strength of the plaster membrane.
There are several reasons why stucco cracks which include but are not limited to structural loads, lateral force racking, changes in temperature, wind, lumber shrinkage, foundation settlement or earth movement caused by nearby railroad tracks and heavy construction machinery. It is for this reason that the National Wall and Ceiling Bureau (NWCB) and the American Standards for Testing Materials (ASTM) recommend that control joints be installed so as to break up a stucco wall in panels of 144 square feet. Even following these steps will not insure a crack free stucco wall but it will definitely make a stucco wall less likely to crack.
There are several ways to go about repairing stucco cracks including filling in the stucco cracks with stucco-sand elastomeric caulking materials to applications of fiberglass mesh, bitumen mesh and base coat.
We at Old Pueblo Stucco, L.L.C. strive to insure that the repair of your stucco cracks will be addressed properly whether the repairs involve just a simple application of elastomeric caulk material and stucco finish to more elaborate applications of bitumen mesh and base coat with stucco finish. Give us a call and we will repair your stucco cracks no matter their level of difficulty.
Our Main office
PO Box 24056
Tucson, Arizona 85734