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with the current hot weather spell... I was thinking of how to make my new house (currently
under contruction) cooler (without the use of air-con) ? any suggestions ? heard that some kind of chemical
sprayed on the roof make it cooler by 1 to 2 celcious, also read in the paper
the monier roof tiles reflect heat, install thicker curtain, etc...

please give some suggestion on effective way to make our house cooler...

If you r staying in landed prop, you can install a reflective material between you roof and ceiling. Cant remember wat is the company tat provide this service but there is such method exist

YOu can try to using heat pump if you are building your house. I intend to do that if one day i get the chance to build my house. Also, a whole house fan is great as well. Plant more trees! Cross ventilation.

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Added on June 6, 2009, 7:06 pmYeah another thing, put blinds outside instead of inside if you can. :-)

This post has been edited by lainux: Jun 6 2009, 07:06 PM

there's something called 'insulator'.. check it out.
something that is placed between your house ceiling and the roof.
imho, it's more practical than those roof coating (which will wear off much quickly due to exposure to harsh weather)

This post has been edited by lwb: Jun 7 2009, 09:40 PM

You can try to build a green house.










With green plants covering it, not glass.

this is what i learn from school.

red/orange = warm colour

blue/green = cool colour

if the internal temperature goes beyond 34 degree celcius.. whatever color will not help..
there's only so much we can "trick" our minds.. the rest is just kanasai *lol*

LOL tempreture don't count lar...

insulator....?....is it coolmax? http://www.terreal.com.my/roof.htm

it's an uncommon way of thinking ... but kudos for the thought ....


normally in US tropical countries ... they use heat exchanger pipes (u know how radiator works) placed in under the earth (which the temp is around cooling 20°c) to circulate the cool earth temps to the floors of the home

like i mentioned earlier ... it's uncommon .... but there are some gree bungalows in malaysia uses this method to cool their home without the high cost of air conditioning ...






for the top part of the home .... use ducting (aka ventilation) ..... only through ducting is where the heat is efficiently exits the home with directed air .... placing those aluminium rooftop fans will not efficiently divert the heat as the roof is not fully sealed




for the roofing ... you can easily insulated them via cheap fibreglass .... but not the labour charge le .... it'll help to reduce those heat from the roof tiles from going into the house



and lastly ... the heat reflective paint ...





actually for the best insulation and reduce cost of cooling is actually from the construction of the home itself ...
but malaysia is using those old methods via bricks .... in other countries ... the just use mesh + mortar cement + insulation
it's actually more durable to use mortar ... from those designs ... their home is able to withstand level 7 quake without losing a nail
and it cuts the cooling cost (heating from winter) up to 50%

insulator
rockwool material
marketed by Roxul
try checking out wilhams in malaysia

Will this reflective material contribute to global warming?

Ways to cool down house without air-conditioning:
1. Radiant Barrier.
2. Install insulator: rockwool, cellulose, fiberglass.
3. Spray reflective coating on tiles.
4. Plant more greens.
5. Paint external house with white color.
6. Live underground.

Anymore please share with me.

This post has been edited by dreamKrusher: Jul 22 2009, 08:23 PM

thank for the info...but how much it costs?

paint internal wall with weathershield paint...

Bright colors are always cooler. Ensure good cross ventilation for the house interior. Some kind of forced ventilation method may be adopted. Adopt some of the suggestions above for good insulation. A high ceiling design would contribute to comfort at the lower strata level in the house. Besides roof insulation, cross ventilation below the roof/above ceiling would be good. Shade all glass windows/doors or use heat reflective coating for the glass surfaces. etc..

nice reading Serpentarius

.....i was interested in the reflective paint...coming soon? wow...i mean they are actually for the roof paint right? i think this would be the cheapest way....

the ventilating system also looks promising

monier said to allow ventilation below roof tiles. http://www.monier.com.my/energy-efficient-...-coolroofR.html

After tinting the room, find the room temperature is lower (cooler) but not up to my expectatation. The remaining heat is from roof (penerate thru the ceiling).

Anyone here have installed a suction fan to suck out the hot air between roof & ceiling, does it help ?

(In my old house, installed roof ventilator (wind powered) but find it not so effective)

dunno how much to install all along on the roof