NOT KNOWN FACTUAL STATEMENTS ABOUT SASH WINDOWS

‘It’s essential to under no circumstances block window trickle vents and to stop above draught-proofing windows in kitchens and bathrooms where by the moist air desires to escape,' suggests Natasha Collins-Daniel, campaigner on the Centre for Sustainable Power. 'If not, you could end up having damp or mould complications.'The expense to draught