Interlock®, Interlock Lifetime Roofing Systems®, Alunar®, Interlock Arrow Sign®, and Never Re-Roof Again.® are registered trademarks of I.E.L. Manufacturing Ltd. and are used under license. State Contractor License No. IL 104.013389, MN RR431129, WI 898136. Promotion: Cannot be combined with other promotional offers or discounts. A 25% down payment is required for the 1-Year No Payments, No Interest financing offer. Valid only for this promotion and not applicable to previous purchases. Discounts vary based on the size and location of your home, with a minimum purchase of 12 squares required. Must purchase an Interlock Lifetime Metal Roofing System to qualify. Available only at the time of purchase and not valid if the contract is canceled or amended. † On Approved Credit. Offer available only in Illinois, Minnesota, and Wisconsin, United States. Contact a Customer Account Specialist for details. Offer expires .