Edge windows and doors,  sub-framing technique includes the creation of an additional layer of support encircling these openings.

This method offers a lot of benefits. It allows the distribution of external forces more consistently across the primary structure, easing stress concentrations that could possibly compromise the honesty of the building envelope. Furthermore, the sub-frame contributes to improved heat insulation and helps protect against moisture penetration.

The sub-frame provides multiple benefits, including even distribution of external forces across the primary structure, reduction of stress concentrations, and enhanced thermal and moisture insulation. Additionally, it allows for easier installation and maintenance of edge windows and doors. The sub-framing technique also offers design flexibility, enabling architects to create larger and more innovative window and door configurations.

In addition to its functional advantages, it allows for simplified installation and maintenance procedures for edge windows and doors. Additionally, the technique opens up avenues for innovative architectural designs, enabling the creation of larger, more intricate window and door configurations.