Havelock - Loose Fill Insulation

What it does

Havelock Wool Loose Fill is 100% New Zealand sheep wool, mechanically processed in the U.S. without chemical binders. It can be blown into attics, walls, and ceilings with a 110V loose-insulation blower or hand-packed into difficult cavities.

When to use it

• Attics (R15 to R60+)
• Wall and ceiling cavities (open-blown or dense-pack)
• Hard-to-reach cavities and irregular spaces
• Renovations targeting non-toxic, vapor-open assemblies

Key benefits

• R-4.3 per inch — R15 in a 2x4, R24 in a 2x6, R60+ in attics
• Wool absorbs up to ~40% of its weight in moisture without losing thermal performance
• Class A fire and smoke rating
• Boric acid treatment resists insects
• Does not support mold growth; actively absorbs and filters indoor pollutants
• No off-gassing; safe to handle

Format

Loose-fill wool in 30 lb bags.