Are there any off the shelf cavity closers/vent seals to to enclose the large wall vents on brick walls near gas points in old houses? (I dont use a gas heater anymore)
I found one on ebay but i dont think it will fit. Even if it does fit, how effective are they of stopping the winter drafts compared to bricking in the hole? (sometimes in winter the vent blows out of the wall onto the floor during strong winds)
I found one on ebay but i dont think it will fit. Even if it does fit, how effective are they of stopping the winter drafts compared to bricking in the hole? (sometimes in winter the vent blows out of the wall onto the floor during strong winds)