Protect water lines running through crawl spaces or near outside walls with a chase made from rigid polystyrene foam and ventilated with warm interior air.
How to Keep Your Pipes Warm During a Cold Spell
6 tips for preventing frozen pipes - Yelp
How to protect pipes and what to do if they freeze, Food/Restaurants
Preventing Frozen Pipes in Your Business
Prevent Frozen Pipes - Extreme Cold Weather, Construction Tips
How to Prevent Frozen Pipes » Progressive Service Company
How to Prevent, Treat Frozen Pipes
How to Keep Pipes From Freezing
How to wrap your pipes
Prevent Frozen Water Pipes and Meters