Edgetech Europe
Structural Glazing is more than a fashion trend. Thanks to the performance in terms of thermal insulation and life cycle costs of structural glazing (SG), the facade designs made possible by it are a growing trend where sustainable building is concerned.
The primary seal is of particular importance in structural glazing due to the fact the UV-resistant silicone secondary sealants are gas permeable. The primary sealant - usually polyisobutylene - extruded onto the sides of the spacer and bonded to the inside of the glass pane bears the main load of keeping the edge seal gas-tight throughout and preventing vapour diffusion into the space between the panes. Super Spacer T-Spacer SG, the new spacer for structural glazing and XXL glass panes, has larger surfaces for the application of the primary seal.
Even more precise and robust than previous iterations
The outer dimensions remain unchanged compared to Super Spacer T-Spacer Premium Plus, but the manufacturer increased the lateral areas in order to apply the polyisobutylene. The new spacer design also assists the application to be precise right down to the last millimetre of the spacer before the secondary seal is applied on the automated insulating glass line.
See also: Flexible spacer system for spectacular glass wave facades
This means that the parallelism and low tolerances of the spacers in large multi-pane insulating glass units are even more precise and the robustness of the system is further increased. This is particularly important where high pane dimensions and pane weights are involved, alongside the expected long service life of facade elements.
Structural foam with an integrated desiccant
As with all products manufactured by Edgetech, Super Spacer T-Spacer SG is a metal-free, silicone-based warm edge spacer made of structural foam with an integrated desiccant. It also offers excellent thermal insulation properties by virtue of its low thermal conductivity of 0.19 W/mK. The spacer’s composition offers enhanced shape memory which is very important for the long-term integrity of the edge compound.
The elastic structural foam follows the climate-related movements of the glass, relieving a large proportion of the load from the butyl seal. This represents an invaluable advantage especially in climate zones with very low, very high or strongly fluctuating temperatures.
