Hot air rises. Thus they are trap at the upper portion of the house.
Like someone mentioned before. Install the wind turbine ventilators.
Alternatively, install those insulation - rockwool, etc. try searching in the net. This is to prevent the heat from radiating from the attic to the room below (1st floor)

It depend on how much (temperature) you want to cool down. If you want to use it for entertainment, nothing beats installing A/C

Ok 1st of all, someone got it right. Hot air rises, so its only normal if ur upper floor is hot.

1. If ur glass is facing east or west, it would be hot in da morning or afternoon, solution, put blinds.

2. If ur roof is of bad quality tiles with a low u-value, it would also transmit heat to your room. Is ur ceiling of gypsum board? I dun think so. Solution, change roof tiles or ceiling, which both are costly.

3. Placing any fans would not help as the hot air will still be trapped in the room. Place a higher static pressure axial fan to suck out the air in ur room. By doing so actually forces the air from floor below to replace the air in ur room which cools it down to the same temperature as downstairs.

4. Air conditioning. No need more explaination.

economy way is turbine ventilators to be installed on roof top (around RM800) to cool down the heat, see below link
http://voyager8.blogspot.com/2008/04/make-...heaper-and.html

but for long term, to install air-cond would help, sure can kungfu abit.....

i think long term economy would be the turbine ventilator since it only cost installation cost

while for ac when u use it you have monthly bills hahahaha

i know not all turbine ventilators are built the same, any idea what are the good "types"

depends on what room temp you are looking for. in our kind of weather, the turbine ventilator will not lower the room temp much. Basically, its function is to draw out the hot air that are trap at the ceiling level. If the weather is hot, the room will not be much cooler then outside. Maybe a few deg C lower. That's all. This is from my experience from using them at my previous house

To really have a cool room, nothing beats having an air con switched on. Of course, there is the initial installation cost plus the monthly elect bill

Another method like some restaurant do loh. Sprinkle water on the roof

for best result :-

1) install the aluminium foil e. monier radenshielf below the roof area.... involve removing the roof tiles... cost about RM3k for normal
double storey house

2) install another layer of CSR Coolbatt above the ceiling area.. cost between RM2k-RM3k for 2 storey house

3) install tinted film...cost RM3k + for whole house...

4) put Nippon Solareflect paint on the outer area of your house...

guaranteed your house will be cooler !

well its better to get same temp inside and outside.. rather than hot inside..

previously my room was HOT... now its normal warm.. cause i've installed the ceiling fan,

but my hall is HOT cause there is no ceiling fan there, planning to install turbine ventilator so that the air in the roof can circulate this making it less hot.. this COOLER than the CURRENTLY HOT...

if you want ur room to be COLD/COOL then install aircond else, the best is to have equal temperature

sounds expensive lo bro...

i'm thinking of the nippon solareflect on my room, to give it a new coat since the old one is dirty and etc....

anybody used such roofing coating ? is it any good ?

HW-Racer,

did almost the same thing but instead of CSR coolbats i used cellulose because the woolen blocks have gaps which will cause heat-bridges. not by far as good as cellulose flakes. result with the allumiumum foil (double sided, double woven): inside the roof only reaches 41° tops. under the ceiling in the roof side temp: 28° tops; inside the house ceiling temp even a bit lower cause a/c-ed room: 26° (ambient temp).

thinking of painting roof with reflective / white paint too to make it even cooler.

tint helps a lot if you have lots of windows. do yourself a favour and get a good tint, dont waste time with the cheap ones. no need for v-cool though. personally we used raybarrier which was good. cost for house is much lower than for car (per sqft that is).

Solareflect or similar will be used next time we paint the house i guess. last time not in the market so we just paint it white. also helps a lot.

i recently found this wall insulation paint from heatshielsolution.com - did anyone try it? thinking about getting them to paint the exterior of the house + roof with it.

i remembered u used TCL rite?

hi Bro... so how's the temperature inside your house ? effective ? feel cooler ?

yes i used TCL - i would use them again.

temp inside the house is very comfy. on a hot day if you dont use the A/C at all and keep all windows closed temp will not go beyond 29° inside (if you aired in the night). all you need is a fan to blow the air around you...

if you add aircon you can get the house extremly comfy with minimal electricity consumption. i highly recommend it.

what's the damage for the TCL?

have to look up the exact figure. my roof-area is pretty large. around 5k i think.

Generally, heat from the outside penetrates into the house from all directions. They can be from the roof, walls, windows or even openings.

Those that are renovating their house (to be exact, hacking and extending their existing perimeter walls) can opt to use the autoclaved aerated concrete (AAC).
These are not the normal red clay brick or the sand bricks. They are concrete product made with fine raw materials entrained with tiny air bubbles and cured under high pressure and temperature. The tiny bubbles slows down the heat transmission through the walls and acts as a heat shield. Thus providing an insulation against incoming heat into the house.

This is not a new material. It was first introduced as a building product in Europe in the late 1920s.

These products are currently being used in the green bungalows in Semenyih

usually what i did is use a table fan/standing fan facing and blowing to the windows(windows must open)...the hot air will blow out....

hope this can help you...

This post has been edited by tiensong: Jul 13 2011, 11:29 AM

You might try to install those small fan use to suck the heat out of your room.

What does TCL stands for? Thanks

make a hole at center of the room then can get the aircond from downstairs room

You can refer to here