PART 3 - EXECUTION 3.01 APPLICATION OF BUILDING PAPER A. ASTM C1116 Standard Specification for Fiber-Reinforced Concrete or Shotcrete. Bonding Agent: ASTM C932, for bonding of cement plaster to concrete or masonry substrate. ASTM C1063 Standard Specification for Installation of Lathing and Furring to Receive Interior and Exterior Portland Cement-Based Plaster. When this is the case, it’s best to consult professionals because a poorly executed repair won’t last and might mask the problem until even more damage is done. ASTM C1032 Standard Specification for Woven Wire Plaster Base. This is often caused by improper curing.Īt worst, the walls may be damaged due to moisture infiltration, building settlement, or other environmental factors. Map cracking on a portland cement plaster (stucco) wall. 09 24 00 - Portland Cement Plastering One Coat Fiberglass Reinforced Stucco (FRS) (No. Another reason to recoat a plaster wall is that your building may need a new look, which can be accomplished simply by updating the color. That could be a portland cement-based paint or a slurry of cement and pigments, sometimes call a fog coat. Definition: an explicit set of requirements to be satisfied by a material, product, system, or service. As long as cracks are not too wide so that water passes through them, a new finish treatment can be a quick fix. In the case of brick masonry, the thickness of the first coat plaster is in general 12 mm and in the case of concrete masonry, this thickness varies from 9 to. Even minor cracking can detract from the look of an otherwise good quality wall. Pigments should meet the requirements of ASTM C 979, Standard Specification for Pigments for Integrally Colored Concrete.Ī wall that was poorly cured following installation may exhibit minor cracks on the surface. Today’s pigments are compatible with cement-based materials and are durable over the long term. Older plaster surfaces can become worn or faded upon exposure to weather, such as rain, snow, and sunshine. Repairing portland cement plaster (stucco) around a window Plaster repair is a straightforward procedure that is capable of bringing many stucco surfaces back to good condition. You don’t want to mask something major by addressing the cosmetics. Before beginning any repair, you should make sure that the walls are structurally sound and that there are no hidden problems.
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