No matter how old and unloved your existing windows and doors may be it is still sometimes as economic to refurbish rather than to replace them. We source our replacement parts from 9 different national distributors so it is unusual for us to be unable to find that 25 year old door lock, right hand cranked lockable 18mm backstop cockspur handle, or whatever else is needed to give your frames a new lease of life!
Commercially we quite often fit remote window opener gearing, but on several occassions we have fitted systems for customers with that one window that otherwise would be forever out of reach.
Misted up glazing units are a common problem, usually caused by insufficient drainage being present in the existing windows. We not only change the glass for new but upgrade that drainage so it doesn't happen again!