WHAT DOES SASH WINDOW DRAUGHT PROOFING MEAN?

That is all quite very well but what are secondary glazing models I hear you question! Nicely on a basic degree its a window within a window.While they're going to assist keep heat inside a room and forestall it Generally from escaping by means of any gaps they will not block any gaps at their supply e.g. the sash window itself so chilly air will h