• Reliable Waterproofing – 40-mil uniform thickness provides consistent, high-performance moisture protection
• Proven Technology – Rubberized asphalt and HDPE facing combine flexibility with long-term durability
• Strong Adhesion – Extended selvage edge ensures asphalt-to-asphalt adhesion for watertight seams
• High Strength & Flexibility – Tensile strength of 3900 psi with elongation up to 300%
• Easy Installation – Lightweight rolls (36” x 66.7’, 200 sq. ft.) with treated release liner for fast placement
• ICF Compatibility – Designed for both Expanded and Extruded Polystyrene ICF systems
• Safe & Clean – No VOCs, no odor; environmentally responsible solution
• UV Protection Guidance – Must be covered within 30 days or protected with Polyguard UV40 or flashing

• Thickness: 40 mils
• Application Temp.: 25°F and above
• Elongation: 300% (ASTM D412)
• Tensile Strength (Membrane): 325 psi
• Tensile Strength (Film): 3900 psi (26.9 MPa)
• Peel Strength: 9 lbs/in (1576 N/m)
• Puncture Resistance: 50 lbs (ASTM E154)
• Flexibility: Pass at -22°F
• Water Vapor Transmission: 0.02 perms
• Lap Peel Strength: 3.3 lbf/in (580 N/m) at 41°F
• Hydrostatic Head: 231 feet (60 m of water)
• Moisture Absorption: 0.1% maximum
• Roll Size: 36” x 66.7’ (200 sq. ft.)

Surface Prep: Substrate must be clean, dry, and cured at least 3 days. Remove dirt, debris, frost, and release agents.

Substrates:

• Insulated Concrete Forms (ICF)
• Cast-in-place concrete walls
• Concrete Masonry Unit (CMU) walls
• Precast concrete foundation walls

Priming: Apply Polyguard 650 WB primer (350–400 SF/gal) to ensure tacky adhesion before applying WM40.

Corners & Joints: Treat with Blue Barrier® Gap Filler or Home Stretch® Detail Tape before membrane installation.

Membrane Application:

• Install vertically in 8’ sections or less
• Overlap side laps 2.5” minimum; staggered end laps 6” minimum
• Use roller pressure to ensure full bond

Termination: Secure top edges with termination bar and cover with Blue Barrier Gap Filler.

Protection: Apply Polyflow® or Totalflow® drainage/protection boards before backfilling.