Comfort Lock HFO

Comfort Lock HFO

Comfort Lock HFO is Closed-Cell Medium Density Spray Polyurethane Foam insulating material that is currently listed by the Canadian Construction Materials Centre (CCMC) under evaluation listing #14509-L.

Comfort Lock HFO closed cell foam is designed to provide: excellent thermal performance; air impermeable insulation; and, an integral part of an air barrier assembly.

2.18 lb.

Core Density




R-Value Per Inch

Key Features

LTTR - TYPE 1 provides long-term thermal resistance of 1.87 m²•K/W at 50 mm.

Comfort Lock HFO medium-density SPF has an exceptional LTTR R-Value of 5.4 per inch.

Meets and exceeds CAN/ULC S705.1-15 as referenced in the National Building Code of Canada.

Use on substrates as cold as -10°C (14°F).

Safe for electrical wiring, can be applied over typical electrical wiring without affecting wire coverings.

Safe for plumbing, can be applied over PVC (polyvinyl chloride), ABS (acrylonitrile butadiene styrene), PEX (cross-linked polyethylene), copper and steel piping systems.

Typical Applications

Residential, commercial, industrial and institutional building insulation.

Interior perimeter stud wall insulation.

Exterior, below grade and under slab applications.

Freezers & Coolers.

Spray Equipment

This product is designed to be sprayed with a plural component spray machine. If you’re thinking about getting into spray foam insulation, do it right. Graco’s complete line of Reactor equipment gives you the reliable performance your company demands. Don’t settle for anything less.

Documentation and Links

Please click the links below for additional information on the Comfort Lock HFO material.

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