5 Ways To Winter Proof Your House It's never too early in the season to start thinking about how you'll winter proof your house. These expert tips will help protect your key asset from the ravages of ice, snow and freezing temperatures.By Andre Mayer, Reader's Digest Canada View as list 2 of 7‹ ›Photo: ShutterStock 2. Shut off your outside water supply Water expansion can wreak havoc on pipes. To prevent them from bursting, the Canada Mortgage and Housing Corporation (CMHC) suggests shutting off the water supply to your outside tap by October. Bonus: 11 Ways to Pick Up the Pieces After a Flood.