Re: painting roof white to reduce heat inside the house

light colors reflect heat. yun lang.

kung paint meron maintenance yan

better to use insulation material. one time expense.

Re: painting roof white to reduce heat inside the house

light colors reflect heat. yun lang.

kung paint meron maintenance yan

better to use insulation material. one time expense.

I'm not really a handyman. All that I know is what I have seen on youtube. It says in one video that insulation will increase the heat resistance of your roof. This will allow a slower transfer of heat. Painting your roof with correct paint will actually reflect most of the heat. This is what Super Therm states. Super Therm is a ceramic paint. I would like to know if Flexseal Ceramicoat is the same as SUper Therm.

Thanks.

Re: painting roof white to reduce heat inside the house

for information only. end user pa din ang final decision maker based on the options available to him.

Re: painting roof white to reduce heat inside the house

question: What can you put over a corrugated roof to minimize rain noise? Will asphalt help? By the way, my roof is colorbonded.

Re: painting roof white to reduce heat inside the house

light colors reflect heat. yun lang.

kung paint meron maintenance yan

better to use insulation material. one time expense.

I've had some experience with that. I retrofitted the ceiling of our rented house with foam insulation. Linapag ko lang sa ceiling. Later on I cut some into 12x12 squares to fit in between pamakuan, then covered it with an additional layer of thinner insulation. I also patched the gaps with tape (it's useless kung malaki ang awang because sumusuot ang hot air underneath.

The result? A palpable difference in room temperature (around 10 F sometimes). Maybe more. Tapos nabawasan yung electrical bill ko by at least 1k (probably more since after the installation, we only use airconditioning 60% of the time)

I spent about 3k all in all for the material, which can be removed and reused when I move.

Another thing I did was to install a small exhaust fan to blow air into the kisame. It was just a 600 peso 8 incher. There was a kulob na area in the house, so the fan blew the stale air from there into the kisame, another huge temperature difference, for a 20 watt fan.

Of course, premium paint for the roof is a no go for me since I'm just renting.

Re: painting roof white to reduce heat inside the house

Newbie here. based on our experience, previously our GI roof color was a very dark russet brown roof paint from DAvies. Our attic became extremely hot with this color. Since our roof frames are made of wood, i was scared the extreme heat would become a fire hazard to the frames. I decided to paint it over with a lighter color, Island Roof Kote Ivory. NOw, we can really feel the difference - its cooler with a lighter color. With regards to the Flexseal insulating paint .. i wish i could have tried it!

Re: painting roof white to reduce heat inside the house

Redgard Coating Solutions Co. Ltd, has a product that supports "cool roof" initiative, the Redgard Ceramic Coating. See link for product info, http://redgardcoating.com/oursolutions-cool-heat-reflective-ceramic-coating.html

www.redgardcoating.com

Cool roof info can be found here, http://coolroofs.org/documents/IREPanel_EverythingYouNeedtoKnowAboutCoolRoofingforweb.pdf

In gist, cool roof is not about simply painting your roof with any white paint. The coating used should have the required properties of high solar reflectance and high thermal emittance.

Boysen and Nippon Paint also has their own versions. Not sure with the other paint manufacturers.

Re: painting roof white to reduce heat inside the house

An OT here !!

Kindly introduce yourself to the forum, we have a MEMBER INTRODUCTIONS right down the lower part of the PHM index page.

THANKS.

Re: painting roof white to reduce heat inside the house

By all means go ahead paint your roof white, there's nothing wrong with that and it will even beautify your house roofing, as long as you have carefully followed proper proceedures before applying your paints.

Di ba may kasabihan tayo na " light colors deflects heat, and dark colors
absorb heat ".

Painting your roofings white will only minimize small amount of hot air
inside your house, the best possible solution is that you install insulations under your roofs giving it a minimum spacing of 6 inches
between the underside of the roof and the above side of the insulation.

I am suggesting this because this is based on my actual experience
in my house. I have painted my roofs several times with Flexseal
elastomeric insulating paint, they call it "CERAMICOAT" and yet it is
still hot inside the house specially during the summer months. I did
experimented with my house since some parts of my house
doesn't have yet a ceiling and still under construction and so
LO and BEHOLD rooms with insulations and finished ceilings were truly very much cooler than rooms without insulations.

The rooms without insulations, you can really feel the heat penetrating from the GI roofing sheets down to the surface of the tables and other furnitures inside the house. May I simply suggest
in case you opt to install insulations in your ceilings, choose the thicker ones with double sided aluminum sheetings and believe you me you'll have cooler rooms inside your house.

I honestly hope this tip will be of great help to you and to all our friend at PHM. Pahabol tip, see if you can install also an exhaust ventilator
in some of your rooms to expel hot air coming from the windows.8)
thanks.

mam may i ask how many coats of ceramicoat did you apply?

I thinks its two or three coats of the Ceramicoat. 🙂

Guys, I'm also interested to try this white paint idea and would be interested to know if anyone of you tried the Boysen Cool Shades paint? Here is the link> http://www.boysen.com.ph/products.do?item_id=24430

Thanks good information

better option is to use heat reflecting paint or reflecting chemical for roof and walls. it can reduce the inside temperature to normal no matter outside rises to high. but using normal white paint doesnot effects in temperature very much but a little bit because it can not reflects the whole heat and absorb some and heat the roof.

Thanks for the info. We're planning on repainting our roof as well. I think I'll try out Boysen Cool Shades Beige or perhaps Terra. Anyone know if there will be a difference between these two? Beige is lighter so logic dictates that it's better, but then again Terra would be more aesthetically pleasing.

Also, can anybody tell me about their experience when it comes to the cost of roof repainting? I was given a quote of 25k for our 130 sqm house. Is that a reasonable price? How often does one need to repaint the roof?

We're also considering installing insulation. How much does that cost and what does the process involve?

Are you planning to install an insulation and then repaint your roof?

Insulating materials are usually installed prior to the installation of the roof material. In this case, you'll need to remove your roofing material and install an insulating material. I'd recommend a double bubble double foil insulation, you can purchase this from Felport Marketing. For your roof material, if it is G.I., it would be cost effective to replace the g.i. with a pre painted long span sheet. (choose white if you opt to have a white roof). Choose a thick guage of roof (#22 g.a. perhaps)