THE 2-MINUTE RULE FOR SASH WINDOWS

‘It’s vital that you never block window trickle vents and to avoid more than draught-proofing windows in kitchens and bogs where by the moist air desires to flee,' claims Natasha Collins-Daniel, campaigner on the Centre for Sustainable Power. 'In any other case, you might end up getting damp or mould complications.'Rebecca Knight Discovering ti