NOT KNOWN DETAILS ABOUT SASH WINDOWS

‘It’s vital that you in no way block window trickle vents and to avoid over draught-proofing windows in kitchens and loos where the moist air desires to flee,' says Natasha Collins-Daniel, campaigner with the Centre for Sustainable Energy. 'Normally, you could end up with moist or mould challenges.'The price to draught-evidence your windows wil