Buriram Expats
Buriram Province - General Category => Real Estate, housing, house and land ownership => Topic started by: Pichai on September 28, 2017, 05:34:41 PM
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Mr. Thai Bob tested each of the new shipment of Solar Powered Roof Exhaust Fans today in Buriram. These quality solar powered attic exhaust fans can be mounted on concrete tile roofs | slate Roofs | Asphalt Shingle | Metal Roof | Wood Shake roofs sold and installed in Buriram Thailand. Keeping your home cool and lowering your PEA electricity bill is a worthy endeavour when building a home in Buriram. Thank you Mr. Pichai.
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Those look like the ones I ordered?
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What is the price of these solar powered exhaust fans? How do they work at night when there is no sun?
Regards
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Around 12,000 baht each, they work during the day to remove the hot air from the attic (pulling cooler air up from the ventilated eaves of your roof) which allows your house to stay cooler during the day (35-40 degrees C vice 60-70 degrees C). They will not work at night, but your roof and attic do not get really hot during the hours of darkness.
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Yes the solar powered air attic roof ventilation fan in the photos at the front entrance to Buriram Ruangsangthai near the Solar Panels are Ahab. Mr. Thai Bob tested them as we do all tools, to make sure they work prior to giving to the customer.
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They look really nice, I look forward to picking them up on Saturday.
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Might investigate these. I have 2 of the aluminium "whirrly" ones, and am far from convinced they do any good.
I have a large roof area.. What sort of area would 1 unit work efficiently in?
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They are rated at 600 cubic feet per minute (almost 16 cu meters per minute) per unit. You would have to figure out how large your attic space is, and how fast you want the air to turnover. I had a similar unit on our house in Hawaii and it worked wonders (in addition to radiant barrier sheathing, roof ridge vent, and plenty of under eaves ventilation. I believe keeping the attic spaces as cool as possible is key to keeping the house cool in hotter climates. Our attic in Hawaii went from being a no go zone during the day to hot but comfortable to work after the additions. We had zero insulation and no aircon and the house was comfortable on all but a handful of the hottest days of the year.
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They are rated at 600 cubic feet per minute (almost 16 cu meters per minute) per unit. You would have to figure out how large your attic space is, and how fast you want the air to turnover. I had a similar unit on our house in Hawaii and it worked wonders (in addition to radiant barrier sheathing, roof ridge vent, and plenty of under eaves ventilation. I believe keeping the attic spaces as cool as possible is key to keeping the house cool in hotter climates. Our attic in Hawaii went from being a no go zone during the day to hot but comfortable to work after the additions. We had zero insulation and no aircon and the house was comfortable on all but a handful of the hottest days of the year.
Thanks Ahab
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Saturday a full 40 foot container of Solar Power Products arrived at my family owned builders merchants store in Buriram. Please see me or my bi-lingual staff regarding solar power options for your home or farm in Buriram. Thank you, Mr. Pichai.
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I wish to start a discussion on the cool thai house business. Our house build will begin soon. Firstly I've ruled out concrete roof tiles in preference for colorbond with huge insulation, temp and sound. LED lighting of course. My view on attic ventilation was simply find a car graveyard and buy a couple of radiator fans,one in and one out. Get a step down transformer to 12v dc and off you go. Cubic metres per minutes is above my tech understanding, as long as it flows, not bad?
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I wish to start a discussion on the cool thai house business. Our house build will begin soon. Firstly I've ruled out concrete roof tiles in preference for colorbond with huge insulation, temp and sound. LED lighting of course. My view on attic ventilation was simply find a car graveyard and buy a couple of radiator fans,one in and one out. Get a step down transformer to 12v dc and off you go. Cubic metres per minutes is above my tech understanding, as long as it flows, not bad?
No need to push air into the attic. Heat naturally rises, you just need to give a way to get out without letting bugs/birds/rain in. The solar powered fan takes care of rain and birds. and maybe bugs during the day and removes the hot air. You just need to make sure relatively cool (compared to possible attic temperatures of 60-70 degrees centigrade) can be sucked in under the eaves (in large quantities).
Insulation in tropical climates is not as good as radiant barrier (to keep heat out in the first place) combined with well thought out air flow in the attic. Large windows can also be an issue is not double paned and without reflective (mirror like) surface to prevent heat entry. Design with shade and airflow in mind. Remember for heat reflection, white is the absolute best color. Even colors such as light grey absorb heat much more than white. I suggest the bluescope roof (as thick as you can get) colored white with the best radiant barrier sheathing you can get applied to the metal roof. Our work shed is complete and just the white bluescope roof with good radiant barrier sheathing (no ventilation) provides excellent protection from radiant heat penetrating the roof. If you are around Lahansai, Buriram PM me and I will give you directions to our house build. You can set up a time and check it out for yourself.
Cheers.
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Paint house white or a light colour. Dark colour absorb heat
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Exstracter fan running all night bringing in all that nice cool night air . Took 2 weeks to cool the floors . Now house temperature in morning only 1 degree hotter than outside.
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Thanks Ahab, some very useful advice here. I did wonder why, when the Oz govt began their disastrous loft insulation scheme the colder states were supplied with Rockwool and Queensland used tin foil. Our existing farm buildings have silver colorbond but if white is best, so be it. Regards sound insulation you will probably agree the monsoon can get very noisy, add to that noisy dogs and chickens. Some peace and quiet would be nice. I would definitely like to visit your build site. Another guy on this site lives near you, BillH52, perhaps I can arrange a meeting there same day.
I am here now after 14 years of visits to wife's village on a long term visa and in the business of making friends.
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Thanks Ahab, some very useful advice here. I did wonder why, when the Oz govt began their disastrous loft insulation scheme the colder states were supplied with Rockwool and Queensland used tin foil. Our existing farm buildings have silver colorbond but if white is best, so be it. Regards sound insulation you will probably agree the monsoon can get very noisy, add to that noisy dogs and chickens. Some peace and quiet would be nice. I would definitely like to visit your build site. Another guy on this site lives near you, BillH52, perhaps I can arrange a meeting there same day.
I am here now after 14 years of visits to wife's village on a long term visa and in the business of making friends.
We just moved here permanent as well (after 25 years of visiting). Send me a PM and I will send you my phone number. We are around nearly everyday.
Roy
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Thanks Ahab, some very useful advice here. I did wonder why, when the Oz govt began their disastrous loft insulation scheme the colder states were supplied with Rockwool and Queensland used tin foil. Our existing farm buildings have silver colorbond but if white is best, so be it. Regards sound insulation you will probably agree the monsoon can get very noisy, add to that noisy dogs and chickens. Some peace and quiet would be nice. I would definitely like to visit your build site. Another guy on this site lives near you, BillH52, perhaps I can arrange a meeting there same day.
I am here now after 14 years of visits to wife's village on a long term visa and in the business of making friends.
Also the foam (thin) and foil that is bonded to the Colorbond during the manufacturing process reportedly dampens the sound of the rain considerably. I myself like the sound of rain on a metal roof.
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Attached are photos of eave airflow. Could be fiber cement roof tiles | concrete roof tiles | slate tiles | terracotta roof tiles or the thicker BlueScope Metal roof. These photos show how air can come in under the eaves. With insect screening to prevent insects.
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Very smart it looks Mr Pichai, keep bringing the ideas on.
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Reply to Oily, I had considered a concrete slab base but now, if the floor gets so hot, to raise the living and sleeping area on short concrete posts to allow air circulation. We are above flood level so not essential.
When we arrived here in Feb '17 we stayed at the wife's sister's house, typical Thai oven, cheap construction, concrete, no insulation, no ventilation. 3 fans on the go, still too hot to sleep. All advice and experience will be warmly welcomed.
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Inside my house is still only 26 degrees no aircon going .only have one in bedroom that was turned off at 5 am. Extractor cools the rest of house very cheap it's now 1 pm
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Does the extractor fan fit roofs that are corrugated...I'm not a builder....the roof I have I think is a Kliplok design and wondering how you get water tight integrity without using shit loads of silicon glue...?
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The exstracter is in the kitchen placed as high as it will go . I just turn it on when it is cooler outside and leave it running all night . Turn off when I get up . In the coldest time of the year my house is colder than the bedroom in the morning. We sleep at 25 degrees.
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Thanks Ahab, some very useful advice here. I did wonder why, when the Oz govt began their disastrous loft insulation scheme the colder states were supplied with Rockwool and Queensland used tin foil. Our existing farm buildings have silver colorbond but if white is best, so be it. Regards sound insulation you will probably agree the monsoon can get very noisy, add to that noisy dogs and chickens. Some peace and quiet would be nice. I would definitely like to visit your build site. Another guy on this site lives near you, BillH52, perhaps I can arrange a meeting there same day.
I am here now after 14 years of visits to wife's village on a long term visa and in the business of making friends.
The silver is the cheapest and that it is why it is commonly used here in Thailand (and likely the reason it is used on farm outbuildings in Australia). Painting the house a light color is also a good idea, and there are paints available here in Thailand that act as a radiant barrier to keep the heat out of the walls. Many ways to keep your house cooler, it just takes some preplanning prior to construction beginning.
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Hi Oily,
Definitely like your idea bringing cool air in at night. Any chance of photos or specs of it. Interested in what power rating it would be and where to buy one.
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Reply to Oily, I had considered a concrete slab base but now, if the floor gets so hot, to raise the living and sleeping area on short concrete posts to allow air circulation. We are above flood level so not essential.
When we arrived here in Feb '17 we stayed at the wife's sister's house, typical Thai oven, cheap construction, concrete, no insulation, no ventilation. 3 fans on the go, still too hot to sleep. All advice and experience will be warmly welcomed.
An Australian friend has knocked back my idea of a house on short stilts. Apparently it just creates a no-go zone and perfect home for snakes and other undesirables. So a slab it's going to be. Does your kitchen have a ceiling or is it open to the roof beams? It's not clear from your description. I'm building a sectional house so less worried about the kitchen more the small living zone and larger sleeping etc area. 25c sounds very acceptable.
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We use aircon to sleep about 9 months of the year . Our bedroom gets the afternoon sun . Especially in the summer months 43 degrees outside and only drops to 26 at night . House will only cool down to 27 in the morning.
It is 12 inch kitchen exstracter ran set as high as it will go . Kitchen is part of house .I leave the door to the lounge open . Doors and windows are not airtight so the outside air mostly comes in around patio doors .
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We use aircon to sleep about 9 months of the year . Our bedroom gets the afternoon sun . Especially in the summer months 43 degrees outside and only drops to 26 at night . House will only cool down to 27 in the morning.
It is 12 inch kitchen exstracter ran set as high as it will go . Kitchen is part of house .I leave the door to the lounge open . Doors and windows are not airtight so the outside air mostly comes in around patio doors .
Time to shade that side of the house. In Oz they use what I would call a shop blind, pull down when day is hottest.
If your house is concrete you need a barrier between walls/windows and sun. Concrete stores heat wonderfully.
On a hot day in Melbourne we would close the house down, shut doors,close the curtains. When cooler in the afternoon I would spray the black concrete roof tiles with the garden hose to draw the heat and cool by evaporation.