Go Back   EcoModder Forum > EcoModding > EcoModding Central
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 09-20-2017, 09:31 PM   #1 (permalink)
Master EcoModder
 
oldtamiyaphile's Avatar
 
Join Date: May 2009
Location: Australia
Posts: 1,208

UFI - '12 Fiat 500 Twinair
Team Turbocharged!
90 day: 49.6 mpg (US)

Jeep - '05 Jeep Wrangler Renegade
90 day: 18.09 mpg (US)

R32 - '89 Nissan Skyline

STiG - '16 Renault Trafic 140dCi Energy
90 day: 34.55 mpg (US)

Prius - '05 Toyota Prius
Team Toyota
90 day: 50.25 mpg (US)

Premodded - '49 Ford Freighter
90 day: 13.48 mpg (US)

F-117 - '10 Proton Arena GLSi
Pickups
Mitsubishi
90 day: 36.8 mpg (US)
Thanks: 250
Thanked 285 Times in 214 Posts
Chrome wrap your roof!

If you live in a hot climate, you probably find your summer economy is worse than your winter economy.

That A/C sure takes a lot of fuel to run.

My van has a lot of roof space, just soaking up the sun. Worse, the cargo section doesn't have a headliner so all that heat is transferred directly to the interior. While the cab has a headliner and is partitioned off, the steel partition isn't insulated so it transfers all the from into the cargo area into the cabin in time.

I also have paints and sealants in there that have a longer shelf life the cooler they're kept.

'Before' pic:



Notice the strengthening ribs like a US Boxcar. They're up to 20mm deep, not good for aero.

So time for some chrome wrap.



The air pockets are intentional as this aids insulation, and helps aero. I did the whole thing in one piece, so I was never going to get it perfect anyway. If I was being really pedantic, I would have made little coroplast infills first so as to have something solidish for the wrap to sit on, but the whole thing is being covered in solar panels anyway.



On a cool 25*C day, I found a 22*C delta. That's only going to increase when the sun is really strong, or if you have a darker coloured vehicle. Even compared to white, chrome is still roughly twice as reflective.

With my van being around 7' tall, the wrap is invisible from normal viewing angles, and the paint is now protected from bird droppings (hard to keep something clean if you can't see/ reach it readily.

Unintended consequences

The roof stays so cool now, that a shower in the morning means the roof is still wet in the evening.

Attached Thumbnails
Click image for larger version

Name:	flir_20170909T124043.jpg
Views:	168
Size:	357.1 KB
ID:	22723  Click image for larger version

Name:	roof_before - Copy.jpg
Views:	172
Size:	52.5 KB
ID:	22724  Click image for larger version

Name:	roof_chrome - Copy.jpg
Views:	177
Size:	132.4 KB
ID:	22725  
__________________







Last edited by oldtamiyaphile; 09-20-2017 at 10:38 PM..
  Reply With Quote
The Following 6 Users Say Thank You to oldtamiyaphile For This Useful Post:
Frank Lee (09-20-2017), Gasoline Fumes (09-21-2017), JRMichler (09-21-2017), RedDevil (09-22-2017), redpoint5 (09-20-2017), seifrob (09-21-2017)
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 09-20-2017, 11:12 PM   #2 (permalink)
It's all about Diesel
 
cRiPpLe_rOoStEr's Avatar
 
Join Date: Oct 2012
Location: Porto Alegre, Rio Grande do Sul, Brazil
Posts: 5,515
Thanks: 0
Thanked 522 Times in 467 Posts
Seems like a good solution. I have already seen it in buildings. BTW how does it attach to the roof? And is there any intermediate layer to enhance the insulation?
  Reply With Quote
Old 09-20-2017, 11:29 PM   #3 (permalink)
Master EcoModder
 
oldtamiyaphile's Avatar
 
Join Date: May 2009
Location: Australia
Posts: 1,208

UFI - '12 Fiat 500 Twinair
Team Turbocharged!
90 day: 49.6 mpg (US)

Jeep - '05 Jeep Wrangler Renegade
90 day: 18.09 mpg (US)

R32 - '89 Nissan Skyline

STiG - '16 Renault Trafic 140dCi Energy
90 day: 34.55 mpg (US)

Prius - '05 Toyota Prius
Team Toyota
90 day: 50.25 mpg (US)

Premodded - '49 Ford Freighter
90 day: 13.48 mpg (US)

F-117 - '10 Proton Arena GLSi
Pickups
Mitsubishi
90 day: 36.8 mpg (US)
Thanks: 250
Thanked 285 Times in 214 Posts
It's peel and stick, like a giant piece of sticky tape. It's cool enough now that additional insulation isn't really needed, but you could add lining on the inside of the roof like they do for camper van conversions.
__________________






  Reply With Quote
Old 09-20-2017, 11:37 PM   #4 (permalink)
Ecomuggler
 
Xist's Avatar
 
Join Date: Jun 2012
Location: Mesa, AZ
Posts: 5,147

Chorizo - '00 Honda Civic HX, baby! :D
90 day: 40.43 mpg (US)

Mid-Life Crisis Fighter - '99 Honda Accord LX
90 day: 35.09 mpg (US)
Thanks: 3,096
Thanked 865 Times in 644 Posts
Semi drivers must not like you, but otherwise it sounds like a great solution.
  Reply With Quote
Old 09-20-2017, 11:52 PM   #5 (permalink)
Master EcoModder
 
oldtamiyaphile's Avatar
 
Join Date: May 2009
Location: Australia
Posts: 1,208

UFI - '12 Fiat 500 Twinair
Team Turbocharged!
90 day: 49.6 mpg (US)

Jeep - '05 Jeep Wrangler Renegade
90 day: 18.09 mpg (US)

R32 - '89 Nissan Skyline

STiG - '16 Renault Trafic 140dCi Energy
90 day: 34.55 mpg (US)

Prius - '05 Toyota Prius
Team Toyota
90 day: 50.25 mpg (US)

Premodded - '49 Ford Freighter
90 day: 13.48 mpg (US)

F-117 - '10 Proton Arena GLSi
Pickups
Mitsubishi
90 day: 36.8 mpg (US)
Thanks: 250
Thanked 285 Times in 214 Posts
When you consider the angles, I suspect the sloping rear window of a sedan is far more annoying than my roof ever will be. So far, no truck driver has seemed to notice. My bigger concern is birds attacking it.
__________________






  Reply With Quote
Old 09-21-2017, 02:32 AM   #6 (permalink)
Master EcoModder
 
JockoT's Avatar
 
Join Date: Jun 2017
Location: Scotland
Posts: 579

All That Jazz - '06 Honda Jazz i-DSI S
Team Honda
90 day: 49.82 mpg (US)
Thanks: 35
Thanked 102 Times in 77 Posts
Quote:
Originally Posted by oldtamiyaphile View Post
If you live in a hot climate, you probably find your summer economy is worse than your winter economy.
I wish! Here in Scotland I get my best mileage in the summer (we are into September, and already the FE is dropping because of the weather). Mind you, it is always easier to get warm when it is cold, than keep cool when it is hot. My car doesn't have air conditioning (last one did) and I have only missed it on about three journeys this summer.
__________________
People Think They Are Thinking When They Are Merely Rearranging Their Prejudices


  Reply With Quote
Old 09-21-2017, 12:16 PM   #7 (permalink)
Permanent Lurker
 
seifrob's Avatar
 
Join Date: May 2011
Location: Czechoslovakia (sort of), Europe
Posts: 235

Dáčenka - '10 Dacia / Renault Logan MCV 1.5 dCi (X90 k9k)
90 day: 42.53 mpg (US)
Thanks: 79
Thanked 141 Times in 52 Posts
So large, so complicated surface! How did you manage to wrap it and not get tangled? I am planning something similar. Would you mind to share your method in more details? Did you wet the roof with washing up liquid water? How did you layed it? Is it e-bay wrap, or special brand?
I am almost dying out of curiosity. My father has the same car and I was considering to use silver spray on the roof. Your solution is better.
  Reply With Quote
Old 09-21-2017, 02:00 PM   #8 (permalink)
It's all about Diesel
 
cRiPpLe_rOoStEr's Avatar
 
Join Date: Oct 2012
Location: Porto Alegre, Rio Grande do Sul, Brazil
Posts: 5,515
Thanks: 0
Thanked 522 Times in 467 Posts
Quote:
Originally Posted by oldtamiyaphile View Post
I suspect the sloping rear window of a sedan is far more annoying than my roof ever will be.
My experience with trucks had been quite limited, but the sloping rear window of a sedan does seem more annoying anyway.


Quote:
My bigger concern is birds attacking it.
Why would it be more prone to bird attacks? Anyway, in case it does happen, would be interesting to check if this chrome wrap would protect the original painting from damage.
  Reply With Quote
Old 09-21-2017, 02:08 PM   #9 (permalink)
Ecomuggler
 
Xist's Avatar
 
Join Date: Jun 2012
Location: Mesa, AZ
Posts: 5,147

Chorizo - '00 Honda Civic HX, baby! :D
90 day: 40.43 mpg (US)

Mid-Life Crisis Fighter - '99 Honda Accord LX
90 day: 35.09 mpg (US)
Thanks: 3,096
Thanked 865 Times in 644 Posts
Don't birds hate reflective light? Isn't that why some scarecrows are made of tinsel?
  Reply With Quote
Old 09-21-2017, 09:08 PM   #10 (permalink)
Master EcoModder
 
oldtamiyaphile's Avatar
 
Join Date: May 2009
Location: Australia
Posts: 1,208

UFI - '12 Fiat 500 Twinair
Team Turbocharged!
90 day: 49.6 mpg (US)

Jeep - '05 Jeep Wrangler Renegade
90 day: 18.09 mpg (US)

R32 - '89 Nissan Skyline

STiG - '16 Renault Trafic 140dCi Energy
90 day: 34.55 mpg (US)

Prius - '05 Toyota Prius
Team Toyota
90 day: 50.25 mpg (US)

Premodded - '49 Ford Freighter
90 day: 13.48 mpg (US)

F-117 - '10 Proton Arena GLSi
Pickups
Mitsubishi
90 day: 36.8 mpg (US)
Thanks: 250
Thanked 285 Times in 214 Posts
Quote:
Originally Posted by seifrob View Post
So large, so complicated surface! How did you manage to wrap it and not get tangled? I am planning something similar. Would you mind to share your method in more details? Did you wet the roof with washing up liquid water? How did you layed it? Is it e-bay wrap, or special brand?
I am almost dying out of curiosity. My father has the same car and I was considering to use silver spray on the roof. Your solution is better.
I have a bit of experience tinting my own windows, so that helped a little.

Doing it in one piece was definitely a risk. It's eBay wrap, I couldn't find any branded wrap for sale in small quantities locally.

I just applied my wrap dry. I don't think slip solution would be much help in such a large area, it would tend to try out before you can really use it. You need two people and at least two ladders - ideally a pair of platforms.

I started with Iron-X and clay bar to 100% decontaminate the paint.

I started by rolling out the wrap out on the roof. Wrap comes in 1510mm wide so I had to trim a bit off the width, I just used a pair of scissors and followed the guidelines on the backing paper.

Then I rolled it back up in reverse (so that the wax paper side faces out). I started at the front and peeled back about 30cm, stretched and stuck it down in place. This part needs to be perfect as if it's even 1mm out, you'll be quite askew by the time you get to the end. Then I just worked back pulling on the wax paper and keeping it taught.

Wrap is much easier than tinting, small bubbles come out via little channels in the film, though they seem to seal up if you try to get too much air out of them.

Wrapping was actually easy and fun (and cheap at about $50 to do a big roof), I plan on doing more of it. I've ordered a roll of shadow chrome to do the uninsulated matte black roof on my Jeep. You can really feel the heat radiation off that thing as matte black is the hottest possible colour

I like the black roof look so I might shadow chrome the visible front part of the van roof depending on how it looks and how it performs.

__________________






  Reply With Quote
The Following User Says Thank You to oldtamiyaphile For This Useful Post:
seifrob (09-22-2017)
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com