NawTone+Plus (formerly NWRT-91) is dual-purpose masonry stain for adding color and a high-performance water repellent to vertical concrete and masonry surfaces — in one-step! Because it allows moisture vapors to escape, it prevents spalling or similar failures due to moisture trapped in the wall. It also protects vertical concrete and masonry surfaces against deterioration caused by airborne chemicals like acid rain.
Color retention is warranted for 25-years. NawTone+Plus is water-based, environmentally friendly and complies with VOC and other regulatory requirements.