Diamond Shingles LLC will warranty all materials manufactured by Diamond Shingles LLC for a full 50 years. This warranty is fully transferable, and is non-prorated. Upon the purchase of our system, a warranty card will be mailed. The card must be filled out, signed, and mailed to Diamond Shingles LLC to be eligible for the Manufactures warranty. Failure to return the warranty card may forfeit any manufactures warranty.