Browse Forums Heating, Cooling & Insulation Re: Universal Tile Ventilators 13Nov 26, 2009 12:21 pm Hi Evel the most improtant thing you can do to stop heat ingress is to EXTERNALLY shade your windows, with awnings or similar. 'Pull stick' or 'vertiscreen' are fine. This will stop alot of the heat getting into your house. There is not point replacing existing sarking. Regarding ventilation, the whirly birds are not much chop (read dynomite69's posts). You could look at a thermostatically controlled venting system (www.smartroof.com.au, www.solarventi.com.au). Finally cavity brick walls have an R value of .56. A properly insulated modern brick veneer wall will have a r value of around 3 (ie 6x the insulation). You could put some foam insulation down your walls (www.ecofoamwallinsulation.com.au) Re: Universal Tile Ventilators 14Nov 26, 2009 6:25 pm Quote: I'm not sure if the walls have insulation; it's double brick so I can't get in between to have a look. Windows face North, West and South. Sun hits the front of the house in the morning and a bit of the side in the afternoon. Obviously without seeing plans and layout, exactly how much sun is hitting the house, knowing your location and the prevailing wind directions and sun angles - it's a tough call to suggest what will work best. re the whirly - if you want to vent the hot air out as quick as possible then a tube direct from the ceiling in the house through the whirly will do that for you. But as lambchoppa says - if it's entering another way - then you are better off to stop it entering - but that all depends on body corporate rules and your budget & how easily that can be done. Re: Universal Tile Ventilators 15Jan 10, 2011 1:46 pm Blast from the past, but has anyone installed these things and found an improvement? Like most double stories, my upper floor gets bloody hot but downstairs is always nice. My searching today has discovered trying to open some windows upstairs slightly to promote airflow and remove the heat which I'll try, but seeing what other options there are. I thought a whirlybird above the garage and one on the upper roof both on the rear of the home where they can't be seen would help vent a lot of heat build up in the roof cavity but hard to find anyone on here that says they're not a waste of time! Re: Universal Tile Ventilators 16Jan 11, 2011 9:16 am I know the arguments against using whirlybirds - that they can't shift enough air; that the roof space is not living space; that roof insulation will stop heat soaking through from the roof space to the living space below; and so on. My own personal experience in a house in Perth: we installed 2 whirlybirds in the roof and it made an immediate difference to temperatures inside the house. Not a hugely dramatic difference to be sure but it was unmistakably present. And even if it was only a couple of degrees or so that's a couple of degrees worth that your A/C or other cooling systems don't need to deal with. Re: Universal Tile Ventilators 17Jan 20, 2011 7:25 pm Thudd 2 whirlybirds in the roof and it made an immediate difference to temperatures inside the house. Agreed. I have cathedral ceilings with no roof cavity. So my 2 whirlybirds are connected directly to inside. I find they remove a lot of heat in summer. Then I just block the vent in winter. Re: Universal Tile Ventilators 18Jan 23, 2011 8:34 am I read it on this forum somewhere that leaving a window upstairs cracked open a bit might help. So in a bedroom furtherst from the stairs, I've found on the 35deg days where the house would be an oven upstairs its now still hot but not as bad. So that little bit of heat being able to escape does help. Whether something in the roof space would assist given I have R3.5 insulation is another story. Bit of an expensive exercise to have someone come out and fit a whirlybird etc to test it out! Looking for advice on whether this variation in tile colour is acceptable. The large tile on the left was used in my main bathroom renovation 1 year ago. My ensuite… 0 8974 Hi Kaiser85, We are building with Firstyle Homes. Our build has just started, slab pour is on Saturday (hopefully!). Their standard range is pretty good. We did our… 1 6875 |