Corpus sync: neutrality remakes, note hygiene, datasheet relocation, transformer-split cross-refs
---
title: Portland Cement Plaster and Stucco
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### Sealant joints at casing beads, control joints, and penetrations shall be specified and detailed under [[sync/joint-sealants]]. {note}
−### Cold-formed steel stud framing that receives lath shall comply with [[sync/cold-formed-metal-framing]] for gauge, spacing, and deflection limits. {note}
+### Cold-formed steel stud framing that receives lath shall comply with [[sync/cold-formed-metal-framing]] for gauge, spacing, and deflection limits.
−### Thermal insulation within the wall cavity behind stucco shall be specified under [[sync/building-thermal-insulation]]. {note}
+### Thermal insulation within the wall cavity behind stucco shall be specified under [[sync/building-thermal-insulation]].
# Referenced Standards {toc}
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−# Materials {toc}
+# Material selection binds the mix chemistry; loose specifications let contractors over-sand weak coats or under-lime brittle coats. {note}
−## Material selection binds the mix chemistry; loose specifications let contractors over-sand weak coats or under-lime brittle coats. {note}
+## Portland cement shall comply with ASTM C150/C150M, Type I or Type II.
−### Portland cement shall comply with ASTM C150/C150M, Type I or Type II.
−
```datasheet
label: Portland cement type
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−### Hydrated lime used as a plasticizer shall comply with ASTM C206, Type S.
+## Hydrated lime used as a plasticizer shall comply with ASTM C206, Type S.
−### Aggregate for job-mixed basecoat and finish plaster shall comply with ASTM C897 for gradation and cleanliness.
+## Aggregate for job-mixed basecoat and finish plaster shall comply with ASTM C897 for gradation and cleanliness.
−### Aggregate for interior plaster basecoats in mixed-use gypsum assemblies shall comply with ASTM C35 where applicable.
+## Aggregate for interior plaster basecoats in mixed-use gypsum assemblies shall comply with ASTM C35 where applicable.
−### Water shall be potable and free of deleterious amounts of acids, alkalis, salts, and organic material.
+## Water shall be potable and free of deleterious amounts of acids, alkalis, salts, and organic material.
−## Basecoat mix proportions {toc}
+# Basecoat mix proportions {toc}
−### The basecoat mix shall be either a factory pre-blended bagged product or job-mixed to the cement-lime-aggregate proportions of ASTM C926 Table 1 for the selected base. {note}
+## The basecoat mix shall be either a factory pre-blended bagged product or job-mixed to the cement-lime-aggregate proportions of ASTM C926 Table 1 for the selected base. {note}
−### Where the basecoat is job-mixed, the cement, lime, and aggregate proportions for the scratch and brown coats shall be stated in the approved mix design and shall conform to ASTM C926 Table 1.
+## Where the basecoat is job-mixed, the cement, lime, and aggregate proportions for the scratch and brown coats shall be stated in the approved mix design and shall conform to ASTM C926 Table 1.
−### Aggregate shall not exceed the maximum volume per part of cementitious material permitted by ASTM C926 for the coat being mixed.
+## Aggregate shall not exceed the maximum volume per part of cementitious material permitted by ASTM C926 for the coat being mixed.
```datasheet
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−## Finish coat {toc}
+# Finish coat {toc}
−### The finish coat type shall be selected for the project appearance, exposure, and recoating intent. {note}
+## The finish coat type shall be selected for the project appearance, exposure, and recoating intent.
−### A portland cement sand finish coat shall be job-mixed or pre-blended and may be integrally colored or left unpigmented for field coating under [[sync/exterior-painting]].
+## A portland cement sand finish coat shall be job-mixed or pre-blended and may be integrally colored or left unpigmented for field coating under [[sync/exterior-painting]].
−### An acrylic-modified factory-blended finish coat shall be integrally colored and applied in accordance with its product data.
+## An acrylic-modified factory-blended finish coat shall be integrally colored and applied in accordance with its product data.
−### Where integral color is specified, the finish coat color shall match the approved sample panel for the corresponding elevation.
+## Where integral color is specified, the finish coat color shall match the approved sample panel for the corresponding elevation.
```datasheet
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−### The finish texture shall be specified by name and confirmed by an approved sample panel; texture names alone without a sample shall not be relied upon for acceptance. {note}
+## The finish texture shall be specified by name and confirmed by an approved sample panel; texture names alone without a sample shall not be relied upon for acceptance.
```datasheet
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−## Water-repellent admixture improves the cladding's resistance to absorption but is not a substitute for the drainage plane. {note}
+# Water-repellent admixture improves the cladding's resistance to absorption but is not a substitute for the drainage plane. {note}
−### Where a water-repellent admixture is specified, it shall be added at the manufacturer's dosage and shall be compatible with the finish coat and any specified coating.
+## Where a water-repellent admixture is specified, it shall be added at the manufacturer's dosage and shall be compatible with the finish coat and any specified coating.
```datasheet
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default: 2
```