Saniflex offers significant advantage over hand lay-up, fiberglass reinforced epoxy wall systems in performance and ease of application. As with all systems it does have its own unique set of installation techniques. The following information will be helpful to contractors performing their first installation:

Roller Application

Substrate: Saniflex will not hide or fill imperfections in masonry substrates. We refer to bug-holes, block joints, etc. If a smooth, pinhole free coating is required the substrate must be addressed with block-filler or other suitable fill material.

Temperature: This system should not be attempted at substrate and air temperatures below 60F. This restriction is not related to cure. It relates to ease of application and finish appearance.

Priming: Drywall or masonry surfaces must be primed prior to application of the 3552W or you will not achieve the proper coverage. The primer should be cured or very tacky. Application on wet/fresh primer will not allow you to achieve proper coverage of the 3552W, as the material will sag.

Basecoats: The A side of 3552W is quite thick, accurate measuring and complete mixing become critical. Measure and pour the part B into the mixing container first and then add the part A. This procedure keeps the A from sticking to the sides and bottom of the mixing container and aids in complete mixing. Apply the material at 10-12 mils with high quality 3/8 or 1/2 nap, phenolic core roller covers. At this coverage you empty the roller quickly. Long passes are not practical. On an 8' wall work up or down from the center on each pass. After 10-30 minutes roll again with a 1/2 nap cover to even the distribution and lessen the texture/stipple. At 10-12 mils this product will not completely hide the substrate. If you achieve total hide the product may sag. Allow to cure overnight.

Prior to application of the second coat it is not necessary to sand out any roller fuzz or drips visible in the first application. Apply the second coat in the same process and coverage as the first. Allow to cure overnight.

Prior to application of the 4685W topcoat you should now address all imperfections. To remove drips, sags or roller fuzz utilize a pole sander with open screens. 3552W is a soft material and will typically require a minimum of 18-24 hours to be sandable. Use light pressure, as excess friction will gum the screens or paper. You can lightly mist the wall with water to aid in sanding. At low temperatures the 3552W may require two days of cure to be hard enough for sanding. Low temperature application will also increase the stipple texture.

Texture: In a roller application this system will have a stipple texture. The degree of stipple will be a function of temperature, mil thickness and roller nap. The product will only achieve a smooth texture via spray application of all components.

Topcoat(s): In light colors, especially white it will require two coats of 4685W to fully hide the 3552W basecoat. In medium to dark colors you can hide in one 3-5-mil topcoat. The 4685W wants to roll out at 2-4 mils. It will hang at a greater (5-7 mils) thickness but it requires too much effort to be worthwhile via roller application. Use high quality covers with nap.