Flexible Membrane - Aliphatic

U-91 combines our robust, proprietary polyol resin blend with our flexible aliphatic hardener to create a flexible, urethane with unique performance characteristics. U-91 is a 100% solids, low odor, low viscosity urethane that provides amazing flexibility, toughness and UV resistance.

Uses and Benefits

U-91 is primarily used as a binder for our Scapes aggregate, a clear grout coat over EPDM filled systems, due to its unsurpassed UV stability, flexibility and abrasion resistance. It can also be used as a component in flexible floor and wall systems and padding. It adheres well to many substrates including concrete, gypsum, cement board, metals and fiberglass. Suitable topcoats for U-91 are as follows: F-series polyaspartics, U-51 MCU, U-21 2K WB urethane, or SP-series polyaspartics.

Limitations

U-91 is designed to be applied between 100-125 mils when used with Scapes, 15-20 mils as a floor grout coat and 5-6 (260-300 sq ft/gal) as a wall top coat. U-91 should not be applied as a topcoat where there is vehicular wheel traffic or parked cars. Ideal application temperatures to be between 60-90°F. Cooler temperatures will increase cure times. Warmer temperatures will decrease working and cure times. Verify that substrate temperature is above 5 degrees of dewpoint during application and cure of material to avoid any potential condensation.

Preparation

The preparation method for each project is determined by a full understanding of the substrate to be coated, the chemistry of the coating system being used, the coating system thickness, and numerous other factors. The coating installer should fully read and understand ICRI Guideline NO. 310.2R-2013 and OSHA 29 CFR 1926.1153 before starting preparatory work. The aim, of preparing a substrate for coating applications, is to roughen the surface, remove weak layers, contaminants, dirt, debris and present a solid, clean, dry substrate for the primer. If unsure as to the level of preparation needed contact Polymer Nation at Lab@polymerNation.com.