IKO Stormtite® Synthetic Underlayment (76.2 m (250 ft) x 1,219 mm (48"))

IKO Stormtite^® synthetic underlayment is engineered to be used under asphalt shingles. It has qualified as an IKO PROFORMAX^TM Integrated Roofing Accessory. It’s a cost-effective alternative to traditional #15 asphalt saturated felt, and is covered by a limited 15-year material warranty¹. 

Here’s why it rocks.

• Stronger than felt.  Stormtite is more resistant to tearing and shredding when installers walk on it.  Plus it’s coated top and bottom with tough polyolefin for superior weather-resistance.
• More flexible, even in cold weather. Stormtite is easy to install around vents, dormers, skylights and other typical roof structures. It lays flat without curling and is super durable.
• Synthetic, non-breathable material. Stormtite effectively sheds water that gets behind shingles and it’s engineered to be a vapor-retarder. Thanks to built-in UV stabilizers, it can be left exposed for up to 30 days and will continue to perform.
• Lighter than felt. A single roll of Stormtite contains 1000 square feet but weighs only 20 to 26 lb. It’s easier for your installers to handle.