​MasterSeal AWB 900: Liquid flashing membrane

MasterSeal AWB 900 description

MasterSeal AWB 900 is a one-component elastomeric material for use as a flexible flashing membrane. It can also be used to prepare sheathing joints for subsequent application of MasterSeal AWB 660, MasterSeal AWB 665 or MasterSeal AWB 660 I air/water-resistive barrier membranes.

Recommended uses of MasterSeal AWB 900 liquid flashing membrane

MasterSeal AWB 900 is designed for use as a membrane for flashing rough openings, and as a detailing compound for preparing sheathing joints for application of an air/water-resistive barrier membrane.
Acceptable substrates include ASTM C1177 sheathing, plywood, pressure treated wood, OSB, steel and aluminum.

MasterSeal AWB 900 liquid flashing membrane features

• Can be applied to damp substrates
• Withstands rainfall immediately after application
• Fast cure and tack-free time
• Bonds to a wide range of substrates
• Does not contain solvents, phthalates or isocyanates

US / Canada product information

Data Guide

Data Guide (French)

Data Guide (Spanish)

Detail Drawings

LEED Letter

LEED v4 Letter

Direct contact

Master Builders Solutions Technical Support

Construction Systems


Safety Data Sheet (SDS)

Find all available safety data sheets for this product.

Product Certifications

Generate a free certificate of conformance for a specific BASF construction product.

Related Literature

LEED v4 Letter for MasterSeal AWB 900

pdf (149.32 Kb)

MasterSeal AWB 900 Details

pdf (2.34 Mb)

MasterSeal AWB 900 LEED Letter

pdf (194.28 Kb)

MasterSeal AWB 900 SDS

pdf (207.15 Kb)

MasterSeal AWB 900 SDS

pdf (226.25 Kb)

MasterSeal AWB 900 SDS

pdf (285.87 Kb)

MasterSeal AWB 900 liquid flashing membrane

pdf (103.05 Kb)