If you’re in the market for a new heating oil tank for your home you may have read about double wall oil tanks during your research. Double wall tanks consist of two tanks in one, an inner tank which holds the oil, and a second outer tank, often made of steel or fibreglass, that acts as a barrier in case of leaks. But before you make a decision on a new oil tank, it’s always good to weigh the pros and cons, so we’ll lay out all the facts right here to help you decide! Double wall oil tanks: Pros Leak protection. Oil tank leaks are much less likely with a double wall tank. Want to learn about how to prevent and manage oil tank