AU-1 LAB – Liquid Applied Barrier

AU-1 LAB is a high performance, single component, Styrene Butadiene Resin (SBR) elastomeric liquid weather resistive barrier and flashing membrane. This weather resistant barrier (WRB) functions as both a membrane and flashing and is designed to protect structures from moisture intrusion, air leakage, and environmental stressors. This low-odor, waterproofing barrier can be sprayed, brushed, or rolled, and requires no primer. It is formulated to provide a permanent, breathable waterproof seal with excellent adhesion to most common substrates, including green concrete. It is low VOC, easy to apply, and is easy to clean with soap & water. AU-1 LAB can be used on rough openings, around penetrations and on broad wall applications as a weather-resistive barrier.

Surfaces to be free of all dirt, dust, oil, mildew, frost or other contaminants. Any structural damage must be repaired prior to application. Any non-structural cracks or joints up to ½” should be sealed with AU-1 Elastomeric Construction Sealant prior to AU-1 LAB Application. Protect property and surface not to be applied with membrane.

Use a brush, sprayer, or roller to apply AU-1 LAB to a minimum of 30 wet mils over the desired area of the rough opening including the exterior surface. Application should be done in a manner resulting in the membrane surface being free of openings or pinholes. AU-1 LAB may be applied up to 60 wet mils without sagging if required, due to substrate porosity. Backrolling is recommended after spray application. Allow product to skin before installing any components onto cladding or rough openings. Skin times may vary by humidity and conditions. Check local building codes for additional recommendations or requirements.

NOT INTENDED FOR AREAS THAT WILL BE SUBMERGED IN WATER. KEEP FROM FREEZING. NOT FOR FOOD CONTACT SURFACES. PRODUCT CANNOT BE SANDED.

Immediately after use, clean uncured material and tools with soap and water. Remove cured membrane by cutting with a sharp-edged tool.