Why the toilet door, kitchen door need not choose the choice of alloy doors? In wet weather, the doors are generally damp moldy, deformation serious! Many people have suggested the cheaper steel, aluminum windows and then we PVC window performance characteristics to a comprehensive analysis.
Wind pressure strength and watertight performance
PVC window material strength and rigidity due to the low, although processed steel lining reinforced, but lower by about two grade aluminum windows wind pressure and its performance than watertight. Moreover, since the steel window profiles lining steel not in its cavity corner portion is coupled into a complete framework, plastic welding angle strength sash, fan corners and T-nodes is relatively low.
Airtight performance
Because steel windows box, fan member is welded, so the tightness should be higher than bolted aluminum window slightly better, but the size of high precision aluminum window profiles, box fan with more rigorous, so both still in a grade level.
Insulation properties
Aluminum windows insulation performance is not as good steel windows, bath time energy consumption of smaller!
Lighting performance
Lighting performance than the plastic-steel windows aluminum windows is poor, single member of its frame aluminum windows shading area ratio of about 10% larger field of view and decorative effect is poor, is not conducive to building energy-saving lighting. Kitchen and toilet has always been in the backlight of the apartment! Daylighting performance can not be ignored.
Sound insulation performance
Aluminum windows with horizontal slit sealing plastic windows are basically the same, the sound insulation performance is basically the same.
Fire performance
Fire performance flame-retardant PVC plastic-steel windows with respect to combustible wooden windows is better, but compared with non-combustible aluminum window is poor.
7000 series aluminum alloy sheet
Lightning and static electricity problems
Aluminum is a good electrical conductor, so the time for building envelope structure, to take effective measures to ground can be used as lightning protection and prevent static electricity phenomenon.
Decorative
Steel windows as a building outside the window, only in white, can not meet all types of building colorful exterior decoration needs.
Aging
PVC plastic profiles will be aging, polymer PVC resin under ultraviolet light, macromolecules strand breaks, the surface of the material lose their luster, color powder, the mechanical properties of the profile is lowered. The aluminum anti-aging functions.
Deformation and expansion issues
PVC window susceptible to thermal deformation, cold brittle, size and shape stability is poor, often requires the use of a rigid glass window frame to prevent deformation. The aluminum alloy has high temperature resistance, easily deformed and so.