ExoAir LEF

TDS  SDS  Application Instruction

Product Description

ExoAir® LEF is a single-component, CFC-free, gun-grade polyurethane foam that seals air, thermal, and sound gaps. Part of the Tremco T3 Building Envelope System, it’s ideal for window and door frame joints or hidden joint filling. Works in temperatures from -10°C to 35°C (14°F to 95°F).

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Features

• Low-expansion, low-pressure foam is safe for frames
• High yield vs. standard polyurethane foams
• Quick tack-free time and low water absorption
• Reliable performance in cold conditions
• Provides thermal and sound insulation

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Applications

• Window & door sealing
• Concealed joint filling
• Air, thermal & sound barrier
• Works with other T3 products for a full seal

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Product Details

• Colour: Light Green
• Packaging: 12 × 26 oz (750 ml) cans
• Service Temp: -40°C to 90°C (-40°F to 194°F)
• R-Value: 3.09 per inch
• Fire (ASTM E84): Flame 5 | Smoke 30

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Storage & Safety

• Store upright in a cool, dry area, away from open flame
• Use in well-ventilated spaces; protect from UV and rain
• Do not install below -19°C (14°F)

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Warranty

Covered by Tremco’s limited warranty against material defects; liability limited to replacement or refund.