NEW STEP BY STEP MAP FOR SASH WINDOWS

‘It’s crucial to by no means block window trickle vents and in order to avoid in excess of draught-proofing windows in kitchens and bathrooms where by the moist air requirements to escape,' states Natasha Collins-Daniel, campaigner for the Centre for Sustainable Electricity. 'If not, you can end up with damp or mould troubles.'For homeowners of