The Elegance and Functionality of Metal Gate Door Knobs
What are aluminum window extrusion profiles made of?
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In addition to wood and PVC, aluminium is by far the most widely used material for window profiles. The major downside to aluminium is its lower thermal insulation. The solution to this was found a few decades ago in the addition of a thermal barrier. This is a low thermal conductivity element that is inserted between the inside and outside of the aluminium profile. This insulation layer ensures a drastic reduction in the transmission of heat.