Colour: White
Thermal Resistance: RSI - .020/mm R - 2.8/in. Fair
Cost: Low
Capacity to dry out if wet: Good
Fire Resistance: Poor
Fungus / Vermin Resistance: Fair
Limitations:
-- Highly flammable.
-- Very light and difficult to keep from blowing around during and after installation.
-- Highly susceptible to static electricity and hence difficult to fill cavities. Working on humid days will help.
-- Difficult to locate supply -- often sold as packing material, not insulation. Should be 5 mm (1/4 in.) diameter beads.
Advantages:
-- Pours easily and cleanly.
Applications:
-- Filling concrete block cavities.