Description
Air and vapour barrier membrane factory-laminated with modified bitumen adhesive on an exterior gypsum board with surfaces free from organic fibers (paper free) used on walls.
UNITS PER SKID: 30
Material Use:
SOPRASEAL XPRESS G is a high-performance air and vapour barrier panel designed for use in exterior wall assemblies. It combines a factory-laminated SBS-modified bitumen membrane with a non-organic, exterior-grade gypsum board. This product is specifically engineered to provide a continuous air/vapour barrier in commercial and institutional construction, enhancing energy efficiency and moisture control in building envelopes.
System Components:
SOPRASEAL XPRESS G is used in conjunction with several SOPREMA products to form a complete air/vapour barrier system. The system includes:
- SOPRASEAL XPRESS SCREWS for mechanical attachment of the panels.
- SOPRASEAL STICK 1100T or SOPRASEAL STICK FLASHPRO self-adhesive membranes for joint treatment.
- SOPRASEAL STICK PRIMER or ELASTOCOL STICK ZERO primers, required when using SOPRASEAL STICK 1100T.
- SOPRASEAL LIQUID FLASHING as an alternative joint treatment, providing a monolithic seal over panel joints.
Applications:
SOPRASEAL XPRESS G is intended for use in vertical wall assemblies where a durable, continuous air and vapour barrier is required. It is suitable for use in both new construction and retrofit projects, particularly in commercial, institutional, and multi-residential buildings. The product is ideal for use behind cladding systems, rainscreens, and other exterior finishes.
Application Details:
- Panel Installation: SOPRASEAL XPRESS G panels are installed horizontally and mechanically fastened to the structure using corrosion-resistant SOPRASEAL XPRESS SCREWS.
- Joint Treatment (Option 1): Joints between panels are primed with SOPRASEAL STICK PRIMER or ELASTOCOL STICK ZERO, then covered with a 150 mm (6 in) strip of SOPRASEAL STICK 1100T or SOPRASEAL STICK FLASHPRO. A smoothing roller is used to ensure full adhesion.
- Joint Treatment (Option 2): SOPRASEAL LIQUID FLASHING is applied in a zigzag pattern over the joints, then spread with a trowel to a minimum wet film thickness of 1.5 mm (60 mils), covering at least 100 mm (4 in) in width and overlapping 50 mm (2 in) on each side of the joint.
Special Notes:
- Thickness: The total panel thickness is 12.7 mm (1/2 in), with the SBS-modified bitumen membrane layer being 1.2 mm (47 mils) thick.
- Vapour Permeance: The membrane has a very low water vapour permeance of < 2.5 ng/Pa•s•m² (< 0.04 perm), making it an effective vapour barrier.
- Air Permeance: The air permeance is < 0.001 L/s•m², ensuring excellent air barrier performance.
- Fire Performance: The gypsum board component is non-combustible (ASTM E136) and has a flame spread/smoke developed rating of 0/0 (ASTM E84 / CAN/ULC-S102M).
- Storage: Store in original packaging, protected from sunlight and moisture.
- UV Resistance: The product is not intended for prolonged UV exposure and should be covered with cladding or other finishes as soon as possible after installation.
- Environmental Conditions: While specific temperature and humidity limits are not provided in the TDS, standard practice for bitumen-based membranes suggests avoiding installation in freezing temperatures or during heavy rain. Consult SOPREMA for detailed environmental application guidelines.
This product is part of a comprehensive SOPREMA air/vapour barrier system and should be used with compatible primers, flashing, and fasteners to ensure optimal performance.
https://www.soprema.ca/en/products-systems/sopraseal-xpress-g
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