Description
SOPRASEAL HVM is a variable-permeance air/vapour barrier membrane with high tear resistance.
UNITS PER SKID: 24
Material Use:
SOPRASEAL HVM is a high-performance, variable-permeance air and vapour barrier membrane designed for indoor wall applications. It is primarily used on the warm side of external wall assemblies and horizontal attic surfaces. The membrane also functions as a retention layer for SOPRA-CELLULOSE insulation, making it ideal for use in systems requiring both air/vapour control and insulation retention.
System Components:
SOPRASEAL HVM is used in conjunction with SOPRASEAL SEALANT for perimeter sealing and SOPRASEAL STICK FLASHPRO HT vapour barrier tape for sealing membrane overlaps. It is typically installed behind interior finishes and in front of insulation materials such as SOPRA-CELLULOSE, forming a complete air/vapour barrier system.
Applications:
This membrane is suitable for indoor wall assemblies in residential, commercial, and institutional buildings. It is especially effective in climates with seasonal humidity variations, as it adapts its vapour permeance to the surrounding relative humidity. SOPRASEAL HVM is compliant with the National Building Code of Canada (2015), the International Building Code (2015), and the International Residential Code (2015) as a Class II vapour retarder.
Application Details:
SOPRASEAL HVM must be installed continuously on the interior side of the building envelope, between the insulation and the interior finish. The printed side of the membrane should face the installer. All overlaps must be sealed using SOPRASEAL STICK FLASHPRO HT tape, and all perimeters must be sealed with SOPRASEAL SEALANT to ensure airtightness. The membrane must be protected from UV exposure and must be covered with gypsum board or other interior finishes. It is not suitable for use as an exterior weather-resistive barrier.
Special Notes:
- UV Resistance: SOPRASEAL HVM is not UV stable and must be covered after installation.
- Humidity Limitations: Do not use in environments where interior relative humidity exceeds 60%.
- Temperature Range: Cold flexibility is rated to -10 °C (14 °F), allowing for installation in cold conditions.
- Thickness: The membrane has a nominal thickness of 0.45 mm (17.7 mils).
- Roll Dimensions and Coverage: Each roll measures 2.4 m x 30 m (7.9 ft x 98 ft), providing a gross coverage area of 72 m² (775 ft²).
- Air and Vapour Permeance: Air permeance is < 0.001 L/s·m². Vapour permeance varies with humidity: 0.8 perms at 25% RH and 3 perms at 75% RH.
- Fire Performance: Class A flame spread (<25) and smoke-developed index (<450) per ASTM E84.
- Fungal Resistance: No fungal growth per ASTM C1338.
- Tear Resistance: 418/349 (MD/XD) per ASTM D5147.
SOPRASEAL HVM is a versatile and adaptive membrane that enhances the energy efficiency and durability of wall assemblies by managing air and vapour movement in response to seasonal changes. It is best used as part of a complete SOPREMA system with compatible sealants and tapes.
https://www.soprema.ca/en/products-systems/sopraseal-hvm
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