ULTREX® HAS VERY LOW THERMAL EXPANSION RATES
Let’s now compare what happens with ULTREX® frames. ULTREX® expands and contracts almost the same as the glass. When the 4.6 glass heats up it expands toward the ULTREX® frame 4.0, which is strong as steel and unmovable. The result is a frame as strong as steel with a thin, elegant design that provides more viewable glass. This means that our windows and doors stay tight and true even after extreme temperature swings. ULTREX® expands at virtually the same rate as glass and maintains a tight seal, so it’s resistant to leaks, seal failures, and stress cracks that can compromise energy efficiency and long-term performance.
Vinyl has a 30.0 expansion when it heats up, so it expands 8 times more than the glass surrounds, pulling away from the glass and causing ceil failure. Vinyl can crack, peel, chip, and fade under the heat and cold changes daily. When a vinyl window is installed, contractors must leave up to a 1/4 inch gap between the frame and a vinyl window because a vinyl window frame must have the room to expand and contract under the heat and cold if they did not leave that gap of air the vinyl window would warp and even explode when it expands into the frame. Plastic bends, warps, cracks, and fades it is a fact.