Cement Board Stucco Problems

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Cement board stucco problems.

Aside from james hardie s recent requirement for a minimum 3 8 rainscreen behind their fiber cement panels technical bulletin 18 manufacturers of the synthetic stucco finish systems have not required a rainscreen. Absorptive claddings like fiber cement can hold moisture leading to panel damage rot and even mold problems. Plastering over durock cement board to wire or not to wire that is the question plastering a pizza oven applying both skim and finish coat. Hardie board siding runs about 0 70 to 5 25 per square foot this could lead to a total cost of anywhere from 4 700 to 13 300 why such a huge flux in the price range.

The system as a whole is inherently prone to high water burdens. It is critical that all installation steps are very carefully followed by a professional to ensure all penetrations and gaps are properly treated with the appropriate paint or caulk to protect the panels from moisture infiltration. In cement style stucco cracking can occur for several different reasons. Stucco is applied with a trowel.

While some stucco problems are not related to the way the stucco was put in place many issues can happen with both conventional and newer styles of stucco if they are not installed properly. An air barrier cement board stucco exterior wall system minimizes the risk of condensation within the building envelope. You have to consider the amount of siding you ll need how long it will take and any additional fees for equipment and materials. Other problems with synthetic stucco include a softer surface than cement stucco increasing the likelihood of dents.

An unsightly and dangerous issue the moisture intrusion that results from failed stucco can lead to extensive damage and rot. You still have to browncoat the board and then apply the finish coat you are just using the board as a premade scratchcoat. Actually francis it is not. A complete air barrier cement board stucco exterior wall system has individual air barrier parts.

Also the foam behind the stucco when installed at or below grade was conductive to termite and fire ant infestation according to home inspections usa. Cement board has embedded mesh and is generally 5 8 thick same as a three coat system scratchcoat. It does this by eliminating mass transfer of warm moisture air into the wall assembly to a cold surface where it can condense. The problem even if you embed mesh over the joints is that it is going to crack at the.