For period sash windows, with today’s technology, restoration to former glory is possible with drastic energy savings while keeping both aesthetic and conservation standards satisfied.
Draught Proofing: The Biggest Impact
A good professional draught proofing system will be hidden within the reveal of your window and won’t change on the appearance of it, only take care to create an air tight seal that prevents any cold draughts from entering. Routed grooves around sashes contain brush pile seals which stop cold air infiltration yet allow windows to open and close easily. You can also reduce heat loss by up to 50% with this one improvement.
Secondary Glazing Solutions
Discrete slim profile secondary glazing pads behind the existing window glass, create an insulating air void. Systems these days go for more or less invisible frames so as not to compromise period aesthetics. Secondary glazing retains the original glass and hardware, making it preferable than replacement double glazing for most cases. For Sash Window Repair, visit sashwindowpreservation.co.uk/services/sash-window-repair/
Upgrade Original Glass
Heritage-style double glazing employs slim units that replicate the appearance of single panes where replacement is required. Conventional thicknesses with top-of-the range insulation at a premium cost. Vacuum glazing offers very high levels of performance but also best used in traditional limited size configurations for all around, well resolving quality. Glazing should never be changed without verifying conservation requirements.
Improve Window Operation
Sashes that are well-maintained close more firmly, with less of a gap. Restoration at the professional level typically involves fine-tuning functions and replacing any well-used parts that have worn-out or seen better days. Operation is smooth and you get a better gasket seal, with lower heat transfer than stock.
Complementary Measures
Thick curtains or shades can provide extra insulation when needed. Thermal blinds provide daytime privacy and reduce heat loss.