Disclaimer: Not a sponsored post. Just sharing a project done last week.

So the house that I'm living in is a corner lot facing the setting sun, the radiant heat during evening can be very unbearable & headache inducing.
Wanted to do some low cost project this year to make it cooler somehow, some ideas that I thought of:

1. Install roof turbine (Installed previously, didn't help much)
2. Install some buffer / facade wall / agriculture netting on the outside (mounting issue)
3. Time-based water sprinkler on the outside (mouldy walls)

Decided to do a radiant barrier installation on the roof instead. How I did was:

1. Purchase material rolls directly from supplier (Find supplier from Shopee/Lazada and contact them to do pickup orders), comes in ~40-48m per rolls. Found 3 suppliers, 1 in Kajang, 1 P. Pinang & 1 Melaka. Just find the closest to you.
2. Find contractor to do roofing works, show video instruction on how to do.
3. 1 / 2 days job depending on roof size / design, contractor provide tools & labour.



Feedbacks & comments:
1. Cost = RM170/roll for 48m roll, bought 4 only used up 2.75 (House buildup 30*65). Labour+tools = Rm700
Total cost RM1.4k-ish. Not sure yet what to do with the leftovers.

2. Good quality product, does not tear easily (woven) and warranty is 15 years.

3. Workmanship not that important (could be better aesthetically, but not as important to serve intended purpose)

4. Pretty good results for a low-cost passive solution (no numerical temp. measurement done before / after, but 2nd floor is noticeably cooler in the evening)


Some pics for reference:

Don't have a temp. gun on hand so didn't measure, but I don't get headaches anymore for the whole week living on 2nd floor. Other family members also commented on it being noticeably cooler.

All you need is some air/insulation gap to the roof tiles, but might be hard to install if not much clearance. Mine is not a very high sloped roof design.

Not for my case, had 2 but didn't do much for radiant heat.

For Kajang search Roofseal Bandar Teknologi Kajang.

Didn't become airtight because left some room for air to pass through, but will check once in a while.

Attached the catalogue for it. SIRIM, CIDB and BS 476 which is something related to fire if not mistaken.

Really? Can clarify how so?


Attached File(s)
 WF402_WOVEN_FOIL_1_.pdf ( 1.51mb ) Number of downloads: 99

The catalogue I shared has a Melaka address (supposedly comes from there I guess?)

It's reflective so it can reflect/insulate radiation

Not planning to replace the old tiles yet, so opt for smaller but effective enough jobscope.

Definitely coincidence, the heat getting unbearable in recent years.

Foil is waterproof but definitely not a replacement for tiles. If workmanship is tight enough will cause water to flow to edge of roof tiles.

Parent's house, pre-2000 😅. Not sure on exact brand, got catalogue on 1st page.

Yeap, too low will tear easily making it very messy during installation. This one cannot tear by hand and need scissors or knife, even then also need some effort.

He's from somewhere near Nilai.

I'm actually friend with the contractor, did a few jobs already for me before so I might be getting some preferred prices. My budget for labor is actually 1-1.5k tbh.

A properly done layout would have insulating film > rockwool > channel frame > tiles/shingles, but I'm not planning to spend that much. Also hate rockwool fibres.

Bit too late for comparison 😅, but isn't it annoying though to have battery powered devices above your ceilings?

Got product catalogue at post #17. Any further details can try asking the supplier directly.

The installation does not require any special skills + the materials do not require any lead time to purchase (if only to use in 1 house).

Just need to find some contractors who's familiar with roofing works, show them the video and ask them if they're comfortable to do it.

Can, but if your roof part do not have its own insulation anybody in the future do work between roof-ceiling gonna get cooked inside (wiring, plumbing near water tank, etc.).