Description
Membrane adhered with hot SEBS bitumen composed of a non-woven polyester reinforcement and SBS modified bitumen.
Material Use:
SOPRALENE 250 FR GR is a high-performance SBS-modified bitumen cap sheet membrane designed for use in multi-layer roofing systems. It is primarily used as the top layer in waterproofing assemblies for flat or low-slope roofs, offering enhanced fire resistance due to its integrated flame-retardant agents.
System Components:
SOPRALENE 250 FR GR is typically used as the cap sheet in a multi-ply SBS-modified bitumen roofing system. It is installed over a compatible base sheet or interply membrane, such as SOPRALENE 180 or SOPRASTICK base sheets. The membrane is adhered using SEBS hot bitumen (SOPRASPHALTE M), which acts as the bonding agent. The system may also include a vapor barrier and insulation board, depending on the roof design.
Applications:
This membrane is suitable for new construction and re-roofing projects on commercial, industrial, and institutional buildings. It is ideal for use in SBS-modified bitumen roofing systems where fire resistance and long-term durability are required. SOPRALENE 250 FR GR is compatible with both ventilated and non-ventilated roof assemblies.
Application Details:
SOPRALENE 250 FR GR is installed by unrolling it into a bed of SEBS hot bitumen (SOPRASPHALTE M) applied with a mop. The membrane features a sanded underface and a granule-surfaced top layer, with a 75 mm (3 in) selvedge to facilitate overlapping and sealing. The recommended installation temperature range is not explicitly stated, but typical SBS membrane applications require ambient temperatures above 5 °C (41 °F) and dry conditions. The membrane must be stored upright and protected from UV exposure prior to installation.
Special Notes:
- Fire Resistance: SOPRALENE 250 FR GR includes a flame-retardant agent and meets CSA A123.23 Type B, Grade 1 requirements. For specific fire classification, consult the UL Canada directory (TGFUC.R19921).
- UV Resistance: The granule-surfaced finish provides UV protection, making the membrane UV stable after installation.
- Thickness: The membrane has a nominal thickness of 4.0 mm (157 mils) before heat conditioning and 3.3 mm (130 mils) after.
- Temperature Resistance: The compound remains stable up to 121 °C (250 °F), and the membrane maintains flexibility down to -18 °C (-0.4 °F), even after UV weathering.
- Storage: Rolls must be stored upright with the selvedge side on top and protected from sunlight and weather exposure.
- Installation Limitations: Ensure dry weather and appropriate substrate preparation. Avoid installation during rain or when ambient temperatures are below the recommended range for hot bitumen application.
This product is best used as part of a complete SOPREMA SBS-modified bitumen roofing system and should be installed by trained professionals in accordance with SOPREMA guidelines.
https://www.soprema.ca/en/products-systems/sopralene-250-fr-gr
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