NOT KNOWN FACTUAL STATEMENTS ABOUT SASH WINDOWS

‘It’s imperative that you never block window trickle vents and to stop above draught-proofing windows in kitchens and bathrooms wherever the moist air desires to escape,' suggests Natasha Collins-Daniel, campaigner within the Centre for Sustainable Energy. 'If not, you could potentially end up having damp or mould problems.'Just how a window op