When frames need regular maintenance we can do a repair, otherwise we have to replace them if some parts have rotten beyond economical repair.
Whether you require us to restore or change the frame, we will have to replace glass in the first instance, if thin and old.
The performance of existing frame will be significantly improved by installing a glass with a low-emissivity coating. This will result in an energy-efficient solution that can provide acoustic and thermal insulation and, in addition, you could be entitled to a grant from the Government.