JMD Machinery

Are Aluminum Windows Better Than UPVC?

Anti-wind pressure strength and water tightness:

Due to the low material strength and steel, plastic steel windows and door are strengthened by lining, but their wind pressure resistance and water tightness are about two grades lower than those of aluminum alloy windows and door.

The standard sample window submitted by the enterprise for inspection is like this, and so is the sampling at the construction site.

The average value of "three properties" of aluminum alloy windows and door and plastic steel windows and door installed at the construction site by Shanghai Building Curtain Wall testing Center shows that: "except for air tightness, the water tightness and wind pressure resistance of plastic steel windows and door are worse than those of aluminum alloy windows and door. this result is unexpected, but after further analysis, it reflects the important problems in the quality of plastic steel windows and door.

Moreover, because the lining steel of plastic steel windows and door is not connected into a complete frame system in the inner cavity corner of its profile, the plastic welding angular strength of window frame, fan four corners and T-joint is relatively low.

Airtight performance:

Because the frame and fan components of plastic steel windows and door are welded, the air tightness of plastic steel windows and door should be slightly better than that of aluminum alloy windows and door connected by screws, but the dimensional accuracy of aluminum alloy windows and door is higher, and the coordination of frames and fans is more strict, so the two are still at the same level.

Thermal insulation performance:

The thermal insulation performance of aluminum alloy is not as good as that of plastic steel windows and door.

Daylighting performance:

The lighting performance of plastic steel windows and door is worse than that of aluminum alloy windows and door, and the shading area of its frame fan members is about 10% larger than that of aluminum alloy windows and door, and the visual field and decoration effect are poor, which is not conducive to energy saving and consumption reduction of building lighting.