Should I cover my outside faucet in winter? Expert tips for freezing weather

Even if you do not use your outside faucet in the winter, a frozen pipeline is often much more than a simple nuisance – at worst, it can burst, causing extensive damage. But will covering a faucet in winter help to avert disaster? 

Protecting an outside faucet from freezing in winter is one of the best ways to help mitigate damage caused by burst pipes. If you can't let an outdoor faucet drip to prevent freezing or turn the water supply off at the mains, then covering an outside faucet is your next course of action to help protect your waterlines in winter.

As big freezes are expected to hit parts of the country, experts explain when covering an outside faucet could be helpful, and what else you should be doing.  

Should I cover my outside faucet in winter?

With freezing temperatures on the horizon, experts confirm that covering your outside faucet and exposed pipes should help to prevent some damage to pipework and infrastructure. If you are able to turn your faucet off, however, a cover might not be necessary.

Is covering an outside faucet the only option?

According to those in the know, understanding how to properly winterize an outside faucet is the key. 

'If you properly close your outdoor faucet for the winter, then you shouldn't have any problems,' says Jake Romano, general manager at John the Plumber, based in Ottawa. 'Properly closing your outdoor faucet means shutting the water supply shutoff valve inside your home that supplies water to the outdoor faucet, then opening the outdoor faucet to drain the water from the line.

'The reason you want to do this is the freezing temperatures can travel through the faucet and into the water pipe. If the water inside the pipe freezes, it will expand. If it expands enough, the pipe will split or burst, and you'll have to deal with a flooded basement.

Jake warns that with or without a protective winter cover over your outdoor faucet, not winterizing the system properly is a gamble. 

You should consider winterizing and covering a faucet once temperatures begin to drop below 28ºF for three hours or more at a time. 

Why covering an outside faucet can be beneficial

It is always a good idea to have another layer of protection when it comes to avoiding freezing pipes and faucets, but Jake warns it shouldn't be your only long-term solution. 

'Depending on how cold your climate can become, an insulated cover is only going to buy you time,' he says.

If you are not used to sudden frosts and cold snaps, then it may seem impractical or just another chore to cover faucets and pipework whenever the weather cools down, however, a cover is certainly a better solution than leaving faucets and pipes exposed.

How to cover an outside faucet properly 

Covering a faucet is often one of the last steps in winterizing a house and simply requires wrapping the pipe and faucet tap in an insulated bag or sock, such as this faucet cover from Amazon, or containing it within an insulated box, such as this Rocky Mountain Goods faucet cover available on Amazon, to help protect the metal and plastic from the freezing cold. 

When sealed correctly, a faucet cover traps heat around the tap, preventing the formation of frost on the metal and plastic, and from the resultant cold traveling down the pipeline.

'While a single insulated cover is often enough in mild climates, those living in very cold temperatures for an extended amount of time may want to pack the inside of the box or bag with extra insulation, such as wool, bubble wrap or straw for added protection,' Rachel Bull, Head of Gardens on Homes & Gardens. 

It is possible to make your own insulating cover if needed, but it is not the best long-term fix. Simply wrapping an old shirt, blanket, or cloth around the faucet and securing it with a plastic bag and strong tape can help take some of the pressure off of the faucet and prevent a build-up of biting frost. Store bought options are a more efficient option, however.

Rachel Bull

Rachel is a gardening writer, flower grower and floral designer. Her journalism career began 15 years ago on Country Living magazine, sparking a love of container gardening and wild planting. After more than a decade writing for and editing a range of consumer, business and special interest titles, Rachel became editor of floral art magazine The Flower Arranger. She then trained and worked as a floral designer and stylist in London for six years, before joining the Homes & Gardens team.

Shop faucet covers

FAQs

Once you're clued up about whether you need to cover your outside faucet in the frost, you might want to check our guide to winterizing a house, and avoid any other potentially costly issues that can arise as a result of a cold snap.