Insulated Vapor Barrier Roof

Permeability Options:

• The IVB system is available with two different TriBlok™ Smart Weather Wrap permeability options.
• Semi-Impermeable 0.64 perms Class II (ASTM E96) breathable Smart Weather Wrap
• Non-Permeable < 0.1 perms Class I (ASTM E96) Vapor Retarder
• Both options utilize a fungi-resistant fiberglass insulation with thermal R-values of R-19, R-25 & R-30.

Thermal Properties:

• R-value measures resistance to heat flow. The American Society of Testing and Materials (ASTM) C 518-04, (Standard test method for steady-state thermal transmission properties by means of the heat flow meter) provides a rapid means of determining the steady-state thermal transmission properties of thermal insulations and other materials with a high level of accuracy. Available in thermal R-values of R-19, R-25 & R-30.
• Joint Opening Size Confirmation SIZES: Standard Widths are 1-to-20-inch nominal and Custom Seismic Widths are available.
• Prior to installation always confirm that system sizes supplied will accommodate both the minimum and maximum joint width. Refer to MM Systems product drawings and project specific contract drawings. Too often expansion joint openings are sized without adjustment resulting in larger than anticipated openings. Not knowing the actual expected minimum and maximum joint opening may result in product failure or costly replacement orders if not properly sized.

Technical Data:

TriBlok™ Smart Weather Wrap
• Material: High Density and Low-Density Polyethylene
• Nominal Thickness: 6 mil (ASTM D1777)
• Unit Weight: 3.5 oz/yd2 (ASTM D3776)
• Tensile Grab Strength: 119 lbf (ASTM D751)
• Tear Strength (tongue): 65 lbf (ASTM D2261)
• Mullen Burst Strength; 190 PSI (ASTM D751)
• Life Safety: Class A Rating for Flame Spread [SFI] & Smoke Development [SDI] - (ASTM E84-94)

Fiberglass Insulation
• Thermal Resistance: ≥103% (ASTM C653)
• Fungi Resistance: ≤ control item (ASTM C1338)
• Water Vapor Sorption: ≤ 5% by weight (ASTM C1104)
• Odor Emission: PASS (ASTM C1304)
• Noise Reduction Coefficient: 1.05 (ASTM E423)
• Heat Flow Resistance: R-19, R-25, and R-30