MaintainlyHow often should you winterize your outdoor hose bibs / taps?
Winterize outdoor hose bibs / taps once a year. The commonly recommended range is annually (late fall). A frozen outdoor tap can burst the pipe and flood a wall. It is seasonal work, best done in autumn / fall.
Water expands as it freezes, and a pipe that is full and closed at both ends has nowhere to let it go. An outside tap is the most exposed plumbing on the building, and the pipe that feeds it usually runs through an unheated wall. Shutting it off and draining it is a short job, and the Insurance Institute for Business and Home Safety (IBHS) lists preparing outdoor taps among the steps that protect pipes in a cold snap.
Why does winterizing your outdoor hose bibs / taps matter?
A frozen outdoor tap can burst the pipe and flood a wall.
What happens if you skip winterizing your outdoor hose bibs / taps?
The damage often does not show while the pipe is frozen. It appears at the thaw, when the ice melts and the split pipe starts to discharge, sometimes inside the wall. If nobody is home at that moment the water can run for a long time before it is found.
How do you do it?
- Disconnect every hose. Remove, drain and store each hose. A connected hose holds water in the tap and the exposed pipe behind it, which is exactly where it freezes.
- Find and close the interior isolation valve. Many outside taps have a dedicated shutoff inside, often in a basement, crawl space or utility cupboard, near where the pipe passes through the wall.
- Open the outside tap and leave it open. This drains the section of pipe between the isolation valve and the tap. Leave it open through winter so any water still in the pipe can expand without breaking it.
- Drain the bleed screw if fitted. Some interior isolation valves have a small bleed cap. Open it with a bucket underneath to let the remaining water out.
- Fit an insulated tap cover. A foam or hard plastic cover over the outside tap adds protection, particularly on a tap that is not a frost-free type or has no interior isolation valve.
- Deal with frost-free taps differently. A frost-free sillcock has its shutoff recessed in a long stem that runs through the wall, so the part exposed to the weather is empty when it is closed. It can only drain with the hose off. Left connected, the hose holds water in the exposed section and the tap can still freeze.
What does it take?
How do you know winterizing your outdoor hose bibs / taps is overdue?
- A hose still connected in late autumn
- No water, or only a trickle, from the outside tap after a freeze
- Bulging or splitting visible on exposed pipework
- Water appearing at a ceiling or wall during the first thaw
What do people get wrong?
- Leaving the hose connected, which defeats every other precaution
- Closing the isolation valve but not opening the tap, so water stays trapped in the section between them
- Assuming a frost-free tap needs nothing: it needs the hose off to drain
- Doing it after the first hard freeze rather than before
What changes how often you need to do it?
- Do it before the first hard freeze, not at the first freeze warning
- Pipes in attics, crawl spaces and along outside walls need insulation as well as the tap itself
- If the home will be empty in cold weather, leave the heating on and have someone check the house
- A pipe running through an uninsulated garage or crawl space is at risk well beyond the tap itself
When should you stop and call someone?
If there is no interior isolation valve for the outside tap, ask a plumber to fit one. It makes every winter afterwards simpler.
Does this differ in the US, UK, Australia or Canada?
United States
Needed wherever winters bring hard freezes. IBHS notes that older homes, especially in Southern states, can be more vulnerable to below-freezing temperatures because they are more likely to have inadequate insulation, and that homes built before 2010 typically do not have frost-proof outdoor faucets. Where the faucets are not frost-proof, IBHS advises shutting off their valves and insulating them.
United Kingdom
Hard freezes are less severe than in North America, but outside taps and pipework in unheated garages and lofts still freeze. WaterSafe, the national register of approved plumbers, says the water fittings regulations call for a double check valve on every outside tap: homes built since 1999 typically have one in the supply pipe to the tap, and older homes usually have one built into the tap. Many outside taps also have an isolation valve fitted inside. Insulate pipework in the loft and garage as well as protecting the tap.
Australia
This is largely not applicable across most of Australia. Frost is mainly a matter for Tasmania, the alpine areas of New South Wales and Victoria, Canberra and the colder inland districts. In the warm coastal capitals such as Brisbane, Perth and Darwin the job does not apply. Where it does, the cold season is June to August, so the job belongs in May. For most Australian homes the equivalent seasonal task is checking outdoor taps and irrigation for leaks before summer.
Canada
Needed across almost all of the country. Shut off and drain outside taps in autumn, well before the first hard frost, and detach garden hoses. Frost-free sillcocks still need the hose disconnected. The Insurance Bureau of Canada says that if you go away during the heating season, even for a few days, you should leave the heat on and have someone you trust check on the home, and that failing to do so can affect your coverage. Check the exact condition in your own policy.
Frequently asked questions
Why does winterizing your outdoor hose bibs / taps matter?
A frozen outdoor tap can burst the pipe and flood a wall.
What happens if you skip winterizing your outdoor hose bibs / taps?
The damage often does not show while the pipe is frozen. It appears at the thaw, when the ice melts and the split pipe starts to discharge, sometimes inside the wall. If nobody is home at that moment the water can run for a long time before it is found.
Does winterizing your outdoor hose bibs / taps differ by country?
US 'hose bibs'; UK/CA 'outside taps'. Cold US/CA winters make this critical; milder UK still freezes. AU: only relevant in Tasmania, Canberra, the alpine areas and inland frost country; it does not apply in coastal Brisbane, Perth or Darwin.
When in the year is winterizing your outdoor hose bibs / taps best done?
This is seasonal work. Plan it for autumn / fall, before the weather it protects against arrives.
How we put this together
The figures, intervals and legal points on this page were checked against the sources listed below. The default interval and accepted range are the ones Maintainly uses in its task library. Costs and times are typical ranges and vary by region and by home. Your own manufacturer's instructions come first, and gas, electrical and structural work belongs with a qualified professional. How we research and write.
Sources
- Winter Weather Ready guide, Insurance Institute for Business & Home Safety (IBHS). Checked 11 October 2026.
- Preparing Pipes for Winter Weather, DC Water. Checked 11 October 2026.
- Frozen pipes, University of Georgia Cooperative Extension. Checked 11 October 2026.
- Double-check your outside tap, WaterSafe. Checked 11 October 2026.
- Winter safety, Insurance Bureau of Canada. Checked 11 October 2026.
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