Browse Forums Heating, Cooling & Insulation Re: Making a hallway airtight 6Feb 20, 2023 2:41 pm Spazzen There's also the issue of creating too much positive pressure in the room. If you seal the door on say a bedroom so they air can't escape to the hallway you create a positive pressure environtment. If there's too much pressure you can end up popping the ducting in the ceiling off the vent or otherwise causing a leak. Then you're cooling your roof cavity. Our fixing carpenter (when installing the vent) said he's seen the pressure cause cracking between the cornice and the ceiling in larger rooms. In hallways, he said the narrow width usually meant it wasn't a concern unless there was issues with workmanship. Re: Making a hallway airtight 7Sep 14, 2023 3:34 pm That's one of the problems with ducted. I don't think you have much of an option. Might cheaper to changer your idea of what makes a home, have you considered building a porch? 2 52619 at most it will have a short lintel which could be moved up just below the ceiling or even above. Above means you need to patch the cornice and might need to deal with… 2 61886 What? It's a lighting question, the control joint is only needed at 12m centres, a bulkhead or change of direction will suffice as a 'break' in the ceiling, just make… 8 9012 |