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Slurry Coat

Technical Bulletin


Precision Epoxy Products
a division of : Rock Art, Ltd.
4279 Midway Drive
Douglasville, Georgia 30134
Phone : (770) 489-0340


Product Description:  Slurry Coat is an aggregate filled epoxy system for use as a troweled or squeegee applied industrial floor repair system to fill, even-up or level spalling, pitted or uneven substrate surfaces. The idea of a slurry coat is to apply a self leveling epoxy with a sand filler over an uneven surface to make it smooth or flat again. The epoxy mix has a fine to medium course sand added at a general ratio of between 2 parts epoxy to 1 part sand and 1 parts epoxy to 1 part sand to create a soupy flowing mixture that is applied to the surface by scraping the slurry coat mixture with a wide blade across an uneven substrate wiping clean high spots and allowing mixture to fill low spots. The sand will settle into low areas and epoxy will self level on top. The sand filler takes up volume and reduces the amount of epoxy needed making the Slurry Coat more cost effective than filling with only epoxy. The choice of epoxy is determined on the characteristics required of the cured product to best suit the needs of the application from rigid to flexible or some point in between. The epoxy's open time and cure time are also factors to consider for proper selection. Specialized applications will allow for different size aggregates added at various ratios that maintain a soupy flowing mixture to meet application and cured product requirements.

Cured Slurry Coat Systems are available with a compressive strength from 800 psi to 17,500 psi and a tensile elongation from 3 % to 110 %. Cure times will allow for foot traffic from 2 hours to 72 hours. It should also be noted that the heat distortion factor of the product must be considered in certain applications. Selection of proper mixer and batch size is also important to consider for good results.

Product Directions:  A clean, dry, solid surface is essential to apply the Slurry Coat System onto for permanent results. Due to the various applications possible, consult with Precision Epoxy for proper substrate preparation for your particular project.

Primer: The Slurry Coat is a self priming system in most applications. In some installations a primer may be used when the substrate has a porous profile. In this situation the slurry coat may produce air  migration as it penetrates the substrate creating surface bubbles that may not release. A primer will seal the substrate and eliminate porosity. Surface bubbles in the slurry coat can be torched to release or you can broadcast dry aggregate onto surface to eliminate surface air.
When using a primer, do not add a solvent to the primer for any reason. The solvent will not be able to release through the slurry coat and may affect the product's final solid state properties.

Slurry Coat: Select the type of epoxy binder to suit the project requirements. Mix Parts 'A' and 'B' of the selected Epoxy System at the proper mix ratio for 2 to 4 minutes depending on batch size. Then add aggregate and mix until sand is completely wet and saturated with epoxy (2 to 4 additional minutes). Epoxy to aggregate ratios can vary to suit the needs of the application and/or the epoxy binder selection. Scrape sides and bottom of mixing container while mixing to avoid having any dry sand in the batch. Dump blended Slurry mix on to the prepared area and pull across substrate with trowel or squeegee using a side to side motion to the desired thickness. Once mixture is poured onto surface, it should be spread quickly before the filler has a chance to settle. Slurry Coat is allowed to cure overnight.

Sealer: Select the type of epoxy to seal the cured Slurry Coat to achieve the proper surface strength and finish to suit your application and to eliminate any porosity. In applications where the Slurry Coat is used for substrate preparation as part of a total floor system application, the next step in that floor system would now be applied.

Pricing:  Slurry Coat pricing is determined by square footage and material depth. It is very difficult to estimate because you are generally dealing with cubic volume on an uneven surface. This situation is hard to measure with any degree of accuracy; if you cannot estimate, you simple have to guesstimate. 

Coverage example: One batch at 2 to 1 ratio of epoxy to aggregate respectively would use 1.5 gallons  of epoxy mix to .75 gallon of sand (9.75 lbs). This batch covers 30 square feet at 1/8 inch thick which equals 20 square feet per gallon of epoxy and 155 square feet per 50 lbs bag of sand. Epoxy to aggregate ratios can vary to suit the needs of the application and/or the epoxy binder selection.

See Santex System for additional information.

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Precision Epoxy Products
4279 Midway Drive
Douglasville, Georgia 30134
Mike Ramy
(770) 489-0340

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