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Is Your Exterior Render Cracking? The Answer Is Almost Always in Your RDP Specification

If you manufacture exterior render and you are receiving cracking complaints from contractors — or if your product is performing well in mild conditions but failing on high-rise facades, coastal projects, or buildings in hot climates — this article is worth reading before you adjust anything else in your formulation. The vast majority of exterior render cracking failures trace back to one of two Redispersible Polymer Powder problems: wrong grade or wrong dosage. Not cement content. Not aggregate grading. Not mixing water. The polymer.

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