Before you decide to replace your period windows with aluminium or uPVC substitutes that are supposedly "maintenance free"‚ think again!!
Your period window is an heirloom bequethed to you from history. Historic windows possess aesthetic and material attributes that simply cannot be replaced by modern synthetic windows. Your period window is made of a material that has withstood a century or two of constant wear and exposure to the elements. It can be adjusted, repaired, restored, and even have parts replaced.
Modern synthetic windows are expensive, yet commonly need replacing after 30 years or so, in some cases much sooner. Hinges, catches and gaskets will wear out long before that, and major refurbishment is impossible. The appearance of your house is everything, and period windows were designed to fit in aesthetically with their building, whereas modern replacement sash windows simply fail to achieve the affect of the original. Next time you see a uPVC sliding sash window in a period building, study it in place. Now look for an original refurbished sash window, and ask yourself which one looks like it belongs. In light of the longevity and durability of period windows that have served several generations, uPVC and Aluminium are simply not tested products!
For expert advise from craftsmen with a wealth of experience in conservation and restoration contact Conservation Joinery, before you make a decision you could spend a life-time regretting.