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Another area that has a clear leader is appearance. Wooden window frames are easily
most attractive frames. The timeless appeal of wood suits both modern and period properties. In particular, for period properties it is almost mandatory to have traditional looking frames and in particular sash windows. The appearance of
properties can be undermined with PVC-u frames or cheap looking fake wood finishes.
Although wooden frames are
most pleasing on
eye they are also
hardest work. Older frames require a significant amount of attention to prolong their life. The newer wooden frames are treated before being shipped to retailers but they still require
attention. Regular coats of protective paints are needed every four or five years. PVC-u and aluminium window frames require very little maintenance and can be cleaned with just an occasional wipe with a damp cloth.
Finally, we look at
cost of
different types of frames. Generally speaking,
cheapest are PVC-u frames, followed by aluminium and finally wood are
most expensive. The economic benefits of PVC-u frames combined with their excellent insulation properties go a long way to explaining their popularity.
There are many different styles of window that can be manufactured from
three materials. Casement windows, tilt and turn windows and sash windows are all made from
three materials.

Garry John has contributed to several sites about double glazing including