thermal insulation glue injection doors and windows

thermal-break extruded aluminum profiles

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Aluminum doors and windows with thermal-break glue injection technology have their frames extruded as a single piece with a hollow portion in the middle of the exterior and interior sections. This hollow part has a thin connection piece that holds the two sections together. Subsequently, a glue-like substance that hardens after pouring is injected into the hollow portion to create a thermal break between the two aluminum sections. The small connecting piece melts away to leave the solidified injected glue.

Thermally insulated aluminum profiles can be cut and used for various kinds of doors and windows including sliding doors and windows, casement doors and windows. Most thermal-break glues are made of substances such as polyurethane which prevents the transfer of heat between the interior and exterior aluminum sections. These thermally broken aluminum framed doors and windows provide architects, building owners and residents with several benefits including:

Minimal Thermal Conductivity
Polyurethane and similar materials used for glue injection have very low thermal conductivity. This allows for effective restriction of heat transfer from an area with higher temperature to a lower one through the interior and exterior aluminum frames. Insulation provided by the rigid glue minimizes energy required to maintain the desired climate in the building and reduces the corresponding cost.

Structural and Mechanical Strength
Rigid polyurethane possess unique strength that complements the strength of the aluminum profile. So it can bear the load of the window glass and allow for smooth motion when you open and close the door or window. In addition, this material has high impact resistance relative to its small volume and it saves space so that the aluminum frame can be made with slim sight-lines.

Light Weight
When the polyurethane glue becomes rigid, it gets filled with small bubbles containing a blowing agent. This cellular structure is responsible for the insulating properties of the material. In a typical aluminum frame with thermal breaks, the polyurethane polymer consists of less than 5 percent of the total volume while the blowing agent accounts for the remaining 95 percent. Thus, this method of insulation produces very light frames which are easy to handle, transport and and install.

Dimensional Stability
Aluminum profiles insulated through glue injection retain their size after thermal expansion or contraction. Virtually all materials expand when heated up and contract when cooled. But the change in size is reversible in injection glue materials like rigid polyurethane due to its closed cell structure, resistance to moisture attacks, and excellent mechanical properties.

Thermal insulation by glue injection is an excellent choice when you require aluminum doors or windows that have low thermal conductivity, lightweight, dimensional accuracy and strength. For additional details about these windows, you can check the individual product pages. We provide free consultation and quotes for all our products. Contact us to obtain more information on how to use these thermally broken aluminum products for your building project.