Rapid Set® Eisenwall®:  Premium Exterior Plastering Cement

For your exterior plaster projects, Rapid Set® Eisenwall® is the product of choice. Eisenwall is a premium hydraulic cement for exterior plastering, one-coat stucco and plaster wall repair applications. It can be applied on both wood and steel frame construction, and over nearly all substrates, new or retrofit. With a high quality finish and superior durability, Eisenwall outperforms plastic cement. Eliminate virtually all shrinkage cracking with Eisenwall.  Apply Eisenwall the same way as conventional plastic cement by hand or machine (gun spraying). Scratch, brown and color coat Eisenwall in one day, and save time and money. One 88-pound bag covers 5 square yards at 7/8-inches thick.



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

The Spanish datasheet is available here.


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


The Specification gives a detailed statement explaining the type of jobs to specify Rapid Set® Eisenwall® for, the scope of work, thicknesses, performance requirements and usage.  Here are the specifications for the one-coat stucco and three-coat stucco.

Click here for the word document for one-coat stucco

Click here for the word document for three-coat stucco


Standard Practices

Q: What is Eisenwall® and what makes it a “premium” grade plastering cement?
A: Eisenwall premium plastering cement is a proprietary hydraulic cement blend used in exterior plastering applications where accelerated set times, higher strength, superior durability, enhanced impact resistance, and reduced cracking are desired.

Q: When / Why should Eisenwall be used?
A: Any time you need or want to save time and money and achieve a high quality, durable, crack-resistant exterior plaster finish is an ideal time for the use of Eisenwall premium exterior plastering cement. Many contractors realize significant time savings on their construction schedule when using Eisenwall cement. Eisenwall is ideal for schools and other “high traffic” public institutions that require a highly durable and impact resistant exterior finish.

Q: How soon can Eisenwall be painted/coated/sealed?
A: Eisenwall significantly reduces the waiting time prior to coating. Under dry conditions, water-based coatings such as latex paint or stucco color coat can be applied after the product 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: What special equipment/procedures are required for the application of Eisenwall?
A: Eisenwall is applied in much the same way as traditional plastic cements or Portland and lime. However, Eisenwall has a shorter setting time and certain precautions need to be taken for optimum application.

Q: Can Eisenwall be mixed with portland-based plastic cement to enhance its properties?
A: While the Rapid Set Cement used in the manufacture of Eisenwall is compatible with virtually all Portland based plastic cements, mixing Eisenwall with other plastering cements will decrease its performance and is not recommended.

Q: Can Eisenwall be used for crack repair or window/door installation?
A: Eisenwall is ideal for patching holes and cracks and repairing damaged plaster areas from installation and retrofit of new windows and doors. Remodeling contractors can achieve significant time savings when using Eisenwall.

Q: Is Eisenwall a waterproof plastering material?
A: The special chemistry of the Rapid Set Cement used in the manufacture of Eisenwall makes it highly water resistant. Eisenwall also has very low permeability and is highly resistant to sulfate attack, outperforming Type V portland cements.

Q: Do I need special training or approval to use Eisenwall?
A: While Eisenwall is applied in much the same way as traditional plastic cements, minor training is desirable and applicators must be manufacturer approved. See our list of Approved Applicators.

Q: Can Eisenwall be machine applied (sprayed)?
A: Eisenwall can be applied by hand (trowel) and by machine. Eisenwall contains special additives that make it easily workable by hand and ideal for pumping and gun spraying.

Q: What is the minimum/maximum placement thickness and associated coverage areas of Eisenwall?
A: Eisenwall can be placed in thicknesses from 3/8 inch to 2 inches+ in one coat. When gun applied it is sometimes desirable to place one coat and “double back” to achieve the desired thickness as soon as the first coat has achieved sufficient rigidity. Approximate coverage area for each 88-lb bag is 5 square yards at 7/8-inch thickness.

Q: Is Eisenwall an approved plastering material?
A: Eisenwall premium plastering cement is fully approved. Eisenwall conforms to UBC 25-1 and is approved by ICC ESR 2671. Eisenwall is also approved by the city of Los Angeles, one of the most stringent approvals available. See the ESR and UBC Approvals.

Q: What is the working time of Eisenwall and can it be extended?
A: Under normal conditions (70 degrees F) the working time of Eisenwall is approximately 90 minutes. During warmer weather or unusually windy conditions or when longer working time is needed, the setting time of Eisenwall can be extended with the addition of Rapid Set® SET Control®, or by using cooled sand and water. Use of warm or hot sand and water can and will decrease the working time of Eisenwall.

Q: Should I add lime to Eisenwall?
A: Under no circumstances should lime be added to Eisenwall. Lime significantly decreases the performance of Eisenwall and could cause adverse effects.

Q: Are there any special requirements for sand or water?
A: Sand should be clean and free from deleterious amounts of loam, clay, silt, soluble salts and organic matter. High quality washed plaster sand is required. Water should be clean and free from deleterious amounts of silt and dissolved salts. For more details see the Specification.

Jobs & Applications

  • WhiteCastle in Homewood, IL, Smith Plastering (exterior stucco)
  • EmeraldGardensMulti-FamilyBuilding in St. Paul, MN, Blueline Coatings (exterior stucco repair)
  • Condominiums and Townhomes in Milpitas, CA, Quality Plastering Corp. (exterior plastering)
  • Embassy Suites in Kansas City, MO (plastering)
  • Moonlight Amphitheatre in Vista, CA, Sundt Construction (plastering)
  • ThompsonJunior High School in Oswego, IL, J.P. Phillips Plastering (exterior plastering on the fascia over multiple entryways)

Approved Applicators and Dealers

Here are the Eisenwall Approved Applicators and Dealers.


Click here for the ICC-ES Evaluation Report for Division: 09 00 00-Finishes, Section: 09 24 00-Portland Cement Plastering. This report verifies the Rapid Set One Coat Stucco System complies with code requirements, the criteria used to evaluate this product, how the product should be installed to meet the requirements, and much more.

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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