Beats all weather conditions. Unlike Timber windows Alternative Frames do not absorb moisture and do not alter under extreme weather conditions.
U-PVC is not vulnerable to insects and termites. Its hard surface compound protects it from such invasions, and it does not degenerate like wood.
Alternative Frames do not require periodical repainting or maintenance. They do not rot, warp or corrode. This renders them more economical in long run.
The support... I can only say it's awesome. You make a product and you help people out any way you can even if it means that you have to log in on their dashboard to sort out any problems that customer might have. Simply Outstanding!