Backer Rod Manufacturing Inc. is one of the largest manufacturers of backer rod materials in the world. We offer five distinct products for use in construction joints: Denver Foam®, Titan Foam, Mile High Foam®, Mile High Foam XL™ and Ultra Block®. The type of backer rod used is governed by the type of sealant used, plus environmental, seismic and temperature requirements. Backer Rod Manufacturing is proud to market our products through authorized distributors and select OEM customers around the world.