The ExoAir LEF is particularly recommended as little more than a junction sealer across exterior and interior framework connections, but it can also be used within concealed situations
The ExoAir LEF is best suited around window and door frame joints but can also be used as an effective joint filler. LEF is most commonly used as a thermal and sound barrier. The product can be installed in temperatures ranging from 14 to 95 �F (-10 to 35 �C).
At low ambient temperatures, the properties are excellent through all the seasons. Polyurethane foam with a separate phase and no (H)CFC rocket fuel and constructed with Atmospheric Concentration. The much more typical application of LEF would be as heat insulation and acoustic barrier. High dividend when compared to existing polyurethane foams, the moisture content is lesser time. The material can be used in temperatures up from 14 to 95 degrees Fahrenheit (-10 to 35 degrees Celsius).
- Color - Light Green
- Density - ASTM D3574, .94 to 1.56 lb/ft_ (15 to 25 kg/M_)
- Fire Testing - ASTM E84, Flame Spread: 5
- Smoke Development - 30
- Service Temperature Range: -40 to 194 �F (-40 to 90 �C)
- Air Leakage - ASTM E283, 6.26 psf (300 Pa) infiltration, -0.002 cfm/ft_ (0.008 L/s-m_)
- Tack Free Time: FEICA 1014 10 min at 73 �F (23 �C) and 50% RH
- Cutting Time - FEICA 1005, 45 min at 73 �F (23 �C) and 50% RH (1� (25 mm) width)
- Elongation at Break - ISO527 0.21
- Theoretical Yield - FEICA 1003, 42.9 L
- Thermal Resistance per Inch (R/in) - ASTM C518, 3.09.