Sierra Aluminum - a full service manufacturer of standard and custom aluminum extrusions
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Thermal Improvements Service
Sierra Aluminum Company offers two types of thermal improvements. These include the pour and de-bridge and insulating strut systems.

Pour and De-bridge:

An extrusion is created with a pocket. A two-part liquid polyurethane, which rapidly cures to a solid, is poured into the pocket. After the polyurethane cures, the bottom aluminum section of the pocket is cut way. The profile has effectively been de-bridged, leaving two separate profiles joined by a piece of plastic. Should your application require it, we have the ability to skip de-bridge.

Insulating Strut:

Two extrusions are created, each with at least two small cavities. In these cavities, a glass reinforced nylon strut is inserted. The strut is then rolled in place joining the two aluminum profiles.