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DuROCK EIFS Maintenance Guide

Following these guidelines will keep your DuROCK EIF System in good condition for years to come.

  1. Protect your building from water penetration by replacing damaged caulking every three years.
  2. The use of crushed stone when landscaping around the perimeter of your home will minimize the splashing of mud that will stain the finish.
  3. When leaning a ladder against your walls, make sure you pad the end of the ladder to protect the finish from damage.


If your walls should require occasional cleaning to remove pollution, dirt, mildew or algae, we recommend a solution of: 16 parts warm water, 4 parts household bleach and 1 part trisodium phosphate (TSP). Always test-clean a small area first to make sure you get the desired results.

On small scale area, wet the surface with water prior to spray-applying the stucco cleaning solution. Using a soft bristle brush, lightly scrub the area then rinse thoroughly with clean water.

On a larger scale area, it is recommended to wet the surface prior to applying any cleaning solution. Use a low pressure sprayer; apply the cleaning solution (30-50psi) to the surface. Again, light scrubbing with a soft bristle brush may be necessary.

In order to rinse the wall surface, higher pressure is needed to thoroughly rinse away the cleaning solution (always keep below 600psi). Rinse the surface from top to bottom in vertical sections.



Efflorescence may occur during the initial cure of a cementitious product beneath the acrylic finish. As the water evaporates, it leaves the salt behind which forms a white film.  Since efflorescence brings out salts that are not ordinarily part of the cementitious product, it is not a structural, but, rather, an aesthetic concern. A solution called Efflorescence Clean Spray is available by contacting the customer service department at DuROCK.


As with any other cleaning agent, it is recommended to wet the surface with water prior to applying any product.  Employ similar techniques as stated in the preceding section (cleaning) using the Efflorescence cleaning agent in place of the Stucco cleaning solution. It is important to thoroughly rinse any solution from the DuROCK Finish to avoid residue that can cause staining.


Always be sure that the area to be recoated is thoroughly clean and dry before applying the finish.

DuROCK’s Airless Finish should be used in the instance that any stains on the surface cannot be removed by conventional cleaning practices. Refer to the product information datasheet on Roller Finishes and follow application instructions as specified. Recoating and finishing with Airless will only affect the color of the finish, not the texture. If the texture requires repairing and refinishing please contact DuROCK for a list of qualified EIFS contractors.

This information conforms to the standard recommendations and specifications for the installation of DuROCK systems. DuROCK assumes no responsibility, expressed or implied, as to the architecture, engineering or workmanship of any project. Please consult DuROCK to ensure you are using the latest information available.


Retail Store:
PR-189 Km 2.6, Caguas,
Puerto Rico 00725

Caribbean Office:
PO Box 361650, San Juan
Puerto Rico 00936-1650

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