Polyglass informed customers that it is discontinuing its Polystick MU-X roof underlayment, which includes both the wrapped and boxed versions of the product.

In an email, Polyglass product management said the company is no longer providing Polystick MU-X in order to meet the high demand for more popular underlayment products. Orders that cannot be filled with Polyglass' current inventory will be switched with other metal underlayments, including Polystick MTS Plus and Polystick IR-Xe.

Earlier this year, Polyglass discontinued its Polystick IR-Xe in the 1 square configuration, citing low demand for the product and a desire to meet high demands for other underlayments. Customers seeking to switch existing orders can replace the product with the Polystick IR-Xe 2 square configuration.