Stucco Mix

Rapid Set® Stucco Mix:  Premium Premixed Stucco Repair Material

Use for exterior plastering applications where accelerated set times, higher strength, superior durability, minimal shrinkage and reduced cracking are desired, Stucco Mix is a premium blend of Rapid Set® Cement, quality plaster sand and high-performance additives.

Comparable in appearance to portland cement plaster, apply Stucco Mix using similar methods. Save time by scratching, browning (or applying in one coat to ¾ inch), and color coating in one day. One 50-pound bag covers approximately 7.0 square feet at ¾-inch thick.



The Datasheet explains the performance and technical characteristics of Rapid Set® Stucco Mix.  It also shows how to use Stucco Mix (i.e. surface preparation, mixing, placement and curing).

The Spanish Datasheet is also available here.


The Safety Data Sheet (SDS) outlines information and procedures for handling and working with Rapid Set® Stucco Mix.  It includes physical and chemical property information, potential hazards, emergency procedures and CTS’s contact information.


Coming Soon – The Specification gives a detailed statement explaining the type of jobs to specify Rapid Set® Stucco Mix for, the scope of work, thicknesses, performance requirements and usage.

Standard Practices

Q: What is Rapid Set® Stucco Mix?
A: Rapid Set® Stucco Mix is a blend of high-performance Rapid Set® Cement quality plaster sand, and high performance additives. It is used for exterior plastering where rapid strength gain, high durability, low shrinkage, and reduced cracking are desired. Use in horizontal, vertical, and overhead plaster projects. Stucco Mix can be scratch, browned, or applied at full ¾” depth and color coated the same day.

Q: Is this a modified portland cement product?
A: No. The high-performance properties come from the Rapid Set Cement in the mix.

Q: How soon can I color coat?
A: Apply color after the product is hardened and dry which usually takes 1 ½ to 2 hours.

Q: How soon can Rapid Set Stucco Mix be painted/coated/sealed?
A: Rapid Set reduces the waiting time prior to coating. Under dry conditions, water-based coatings such as latex paint or the stucco color coat can be applied after the products is hardened and dry which usually takes 1-1/2 to 2 hours. Solvent-based and Impermeable coatings such as oil-based paint and epoxy can be applied in 16 hours. Experience has shown that some coatings can be applied in much less time. Follow the coating manufacturer’s recommendations for surface condition.

Q: Is a bonding agent necessary?
A: Bonding agents are not required. Proper surface preparation is the main component in achieving a good bond. If bonding agents are desired, they should be used as a supplement to good surface preparation, not as a substitute.

Q: Can I blend other products with Rapid Set Stucco Mix?
A: Blending with other products may give unpredictable results and is not recommended. Do NOT add portland cement, lime, or any other admixture unless approve by Rapid Set.

Q: How thick can I apply this product?
A: From 3/8″ inch for an initial scratch coat to a full depth ¾” coat. Thicker applications are possible, however a test panel is recommended.

Q: Is Rapid Set Stucco Mix air entrained?
A: Rapid Set Stucco Mix is air entrained, and gives the product exceptional creaminess and workability.

Q: How do I mix it?
A: Just add water. The use of a mechanical mixer such as a mortar mixer or drill-mounted mixer is recommended. To maximize working time, organize work so that all people and equipment are in place before mixing.

Q: How do I place and finish it?
A: Stucco Mix can be hand applied or by machine. Using traditional methods, place and strike off to desired level. It can be scratched and browned or applied full 7/8” thickness. Organize your tools and people so you can work quickly.

Q: How do I cure Rapid Set Stucco Mix?
A: Water cure all Rapid Set Stucco Mix installations. The objective of water curing is to maintain a wet surface until the product has achieved sufficient strength and cannot be scratched with a nail. Begin curing as soon as the surface has lost its moist sheen and continue for a minimum of 90 minutes.

Q: What are common applications for Rapid Set Stucco Mix?
A: Rapid Set Stucco Mix is an excellent exterior plastering material, ideal for patching around new door and window installations or enclosing former doorways and window spaces. It is also very useful in plastering and color coating small room additions in one day.

Q: How do I increase the working time?
A: You can increase the working time by lowering the mix temperature or using set retarding additives. Lower the mix temperature by keeping product cool and/ or using chilled mix water. Rapid Set® SET Control® additive will also increase your working time and is available through your plastering distributor.

Jobs & Applications

  • Olive Garden in Lake Oswego, OR, Bordak Brothers (exterior stucco repair)
  • Green Valley Ranch in Henderson, NV, Draeger Construction (stucco repairs on 12 mile wall)
Leed Product Evaluation

TechnicalSupportWhether you’re working on a time-sensitive project and need answers, or evaluating and choosing the right cement products, or looking to achieve specific results, we are here to help. Get answers to your questions from our technical support team. Find and download useful information from our website. Ask us to help get your construction team up to speed by requesting a jobsite demonstration or educational seminars.

ConcreteCalculatorLearn how Rapid Set’s strength, speed and sustainability help you get better results and finish your jobs sooner. These Charts will show you how.

ProductEvaluationLEED product evaluations summarize a product’s ability to contribute to a variety of LEED credits. These credits include Solar Reflectivity (SS7), Regional Materials (MR4), Recycled Content (MR5), VOC Content (EQ4) and Innovation in Design (ID1).

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