Materials & Construction
The secret behind the exceptional thermal efficiency is Wayne Dalton’s patented manufacturing process, during which the polyurethane core is continuously foamed-in-place between the outer and inner steel skins to form a homogenous sandwich of steel/polyurethane/steel. The technique produces outstanding thermal, strength and bonding characteristics.
Additionally, a non-conductive thermal break virtually stops hot or cold outside temperatures from being transmitted to the inside. This innovative thermal break keeps the interior skin at room temperature, preventing condensation and frost and thereby resisting corrosion. A flexible vinyl bulb seal and non-corrosive polymer retainer prevent water and air filtration at the bottom of the door.
The Thermospan® 200 also features two patented 1 3/4" integral roll-formed struts per section providing the highest strength-to-weight ratio. The embossed stucco outer skin adds additional strength and enhances its appearance. Reinforcement plates are located at all hardware attachment locations, and industry standard commercial-grade, heavy-duty, hot-dipped galvanized hardware also contribute to the Thermospan® 200’s long service life.
*Wayne Dalton uses a calculated door section R-Value for insulated doors.