How do I safely store propane tanks and gas cans in my Ottawa garage according to fire code?

You cannot legally store propane tanks inside any garage in Ottawa according to the Ontario Fire Code, but gasoline containers up to 25 litres total are permitted with strict safety requirements. This is a critical fire safety issue that many Ottawa homeowners get wrong, potentially voiding their insurance and creating genuine hazards.

The Ontario Fire Code Section 4.3 explicitly prohibits storing propane cylinders inside garages, even detached ones. Propane is heavier than air and will pool at floor level if there's a leak, creating an invisible explosion hazard that can be triggered by something as simple as a garage door opener motor sparking. Your propane tanks for the barbecue, patio heater, or camping equipment must be stored outdoors in a well-ventilated area, protected from direct sunlight and temperature extremes. A simple outdoor storage cabinet or even chaining them to a fence post on the north side of your house works well in Ottawa's climate.

Gasoline storage is permitted but heavily regulated. You can store up to 25 litres total of gasoline in approved containers inside your garage - that's typically one or two jerry cans for your lawnmower, snowblower, and generator. The containers must be CSA-approved fuel cans with proper spouts and flame arrestors, not old milk jugs or random containers. Store them on the floor away from any ignition sources like your furnace, water heater, electrical panels, or garage door opener. Never store gasoline on shelves where it could fall, and keep containers tightly sealed to prevent vapour buildup.

Ventilation and Fire Separation Considerations

Ottawa's extreme temperature swings make proper storage even more critical. Gasoline expands significantly in summer heat - a full container in your air-conditioned house will overflow when moved to a 35-degree garage in July. Leave some headspace in containers and check them seasonally. In winter, condensation can form inside partially-empty containers, contaminating the fuel and potentially causing starting problems in your equipment.

If your garage is attached to your house, the fire separation requirements become even more important. That fire-rated drywall and self-closing door between your garage and living space are designed to contain fires and prevent vapours from entering your home. Any gasoline storage in an attached garage should be as far as possible from the house connection, ideally near the overhead door where natural air circulation is better.

For larger fuel storage needs - if you have a generator, multiple pieces of equipment, or live in a rural area where fuel trips are infrequent - consider a detached fuel storage shed that meets setback requirements from your house and property lines. This eliminates the fire risk to your main structures and provides better ventilation than any garage can offer.

The bottom line is that fire codes exist because gasoline and propane fires spread incredibly fast and burn extremely hot. Ottawa Fire Services responds to garage fires regularly, and improper fuel storage is a common contributing factor. When you're ready to upgrade your garage with proper storage solutions that meet fire code requirements, you can browse garage contractors through the Ottawa Construction Network directory who understand both the safety requirements and practical storage needs for Ottawa homeowners.