Browse Forums Heating, Cooling & Insulation Re: Cooling help.. 2Jul 29, 2011 6:14 pm The Harder You Try - the Luckier You Get ! Web site http://www.anewhouse.com.au Informative, Amusing, and Opinionated Blog - Over 600 posts on all aspects of building a new house. Re: Cooling help.. 4Jul 31, 2011 4:44 pm The Harder You Try - the Luckier You Get ! Web site http://www.anewhouse.com.au Informative, Amusing, and Opinionated Blog - Over 600 posts on all aspects of building a new house. Re: Cooling help.. 9Sep 18, 2011 11:24 am Anyone used anything like these.. http://westernsolar.com.au/sv-20-2/ Or these.. http://www.edmonds.com.au/Products/Resi ... -Vent.aspx Or these.. http://universaltileventilators.com.au/ ... -vent.html Trav. Re: Cooling help.. 10Sep 19, 2011 10:49 am Ok my plan is this.. I'll install some vents (with caps) directly out of the 2 bedrooms and hall space on my top floor. This will allow the hot air which is currently stuck up there, to escape, and keep the hot air in during winter. I will also vent the roof cavity with a couple of vents to reduce the hot air stored up there. Something like the smoothline ventilators. Then I will add some closable shutters for the bedroom windows or possibly some angled shading. After that we can then add some split system air con for the super hot days. Does that make sense to the experts here? Trav. Re: Cooling help.. 11Sep 20, 2011 9:01 pm Hi Trav. The vents (with caps) are a good idea. They will let the hot air trapped in the upper floors out. I'm not sure if the roof cavity needs to be vented. If you have sarking and insulation then the roof cavity shouldn't get too hot. This is easily tested by going up into the roof on a hot day. Even if it's 10 degrees hotter up there than inside, a good layer of ceiling insulation would provide sufficient protection. The main thing it to prevent sunlight entering the house during summer. Proper external window overhangs on the north side and external shutters on the west side are best. The next good things are thermal mass inside the house and good cross flow ventilation. The cross flow ventilation is only opened up when the outside temperature drops below the inside temperature in the late afternoon. Keeping the house ventilated until sunrise will mean the house starts the day off as cool as it can. Hard to add thermal mass into an existing house, but just thought I'd mention it for completeness. Once these are done, your maximum temperature will be much lower. Aim for 10 degrees lower than otherwise. Main thing, don't let direct sunlight get into the house (block it externally). Keep the house closed up early in the day and only ventilate when the outside temperature is below the inside temperature and falling (use a thermometer - don't rely on feel as it will feel colder outside due to air movement even though it's hotter. While on the subject of air movement, fans are an inexpensive low energy method of keeping cooler, particularly ceiling fans. Finally, some split system airconditionners to bridge the gap to a comfortable temperature range. Let me know if you'd like to know more. Cheers, Casa Demolition August 2009, Construction Started September 2009, Completed December 2010 Re: Cooling help.. 13Oct 02, 2011 9:00 pm I don't think the roof colour is a big deal. There are many other areas much more important such as sarking and insulation. Demolition August 2009, Construction Started September 2009, Completed December 2010 Re: Cooling help.. 14Oct 07, 2011 8:44 am Unfortunately part of the ceiling in the upstairs rooms is right on the roofline, so no room for regular insulation up there. Perhaps we could pump some insulation foam in.. http://www.ecofoamwallinsulation.com.au/ Anyone used this type of insulation? Re: Cooling help.. 15Oct 07, 2011 9:47 am traveller Unfortunately part of the ceiling in the upstairs rooms is right on the roofline, so no room for regular insulation up there. Perhaps we could pump some insulation foam in.. http://www.ecofoamwallinsulation.com.au/ Anyone used this type of insulation? Looks good traveller - had a read of it. I would use it in your situation. Suburbia is where the developer bulldozes out the trees, then names the streets after them. Hi there, long-time lurker but first time posting. I've bought a house 2 and a bit years ago and last year we had some major water damage on a converted pergola area… 0 7946 Yes, unless you are in a low intensity rainfall area or the area is protected from rain. Do you have access to NCC Part 2 or can you download it? I can email you a copy… 10 12548 Thankyou so much 😀 I've decided on White on white for doors and trims, White on white 50% on ceiling and Mt buller for walls. Fingers crossed it will look OK 😀 2 7206 |