All Ulster Flex products are based on a unique blend of silicone-based resins in low odor solvents that cure to a breathable elastomeric film for use on most vertical masonry surfaces. Its highly UV stable formula provides long lasting protection from acid rain deterioration, minimizes freeze/thaw damage and remains flexible during periods of masonry expansion and contraction. Ulster Flex also makes graffiti removal easier when surfaces are defaced with paints, spray paint, lipstick, crayon and most other common
