Black top in hot climate? (1 Viewer)

[Jkarow08]

Aloha,

Does anyone have a black top on their 40 in a hot climate? Did it turn it into an oven? I like the look and have been considering doing it on my '72 down here in Nica, but I'm wondering if I'll regret it. Thanks for the input!

 

[Jkarow08]

I'm not sure who's rig this is, but I love the dark green with black accents.

 

[charliemeyer007]

Black also radiates heat at night. I would consider doing some sort of insulation on the inside of the roof. As a former Arizona desert boy I like light colored roofs.

 

[fj402]

Aloha,

Does anyone have a black top on their 40 in a hot climate? Did it turn it into an oven? I like the look and have been considering doing it on my '72 down here in Nica, but I'm wondering if I'll regret it. Thanks for the input!

lay out in the full sun 15 minutes in a white t shirt;repeat in a black one

 

[Jkarow08]

lay out in the full sun 15 minutes in a white t shirt;repeat in a black one

I know I pretty much only wear white quick dry shirts or none at all down here...maybe I should just go topless

 

[aztoyman]

I think it can be done IF you insulate it well. If you don't insulate, make sure to park in the shade.

 

[Jkarow08]

Black also radiates heat at night. I would consider doing some sort of insulation on the inside of the roof. As a former Arizona desert boy I like light colored roofs.

I think it can be done IF you insulate it well. If you don't insulate, make sure to park in the shade.

Something like dynamat under the headliner? I do need a new headliner, but was planning on removing the old one and using white bed liner to replace it.

 

[ceylonfj40nut]

if you have AC it may not matter. 40s are hot inherently. If no AC and windows down, outside temp is inside temp when moving.

 

[45Dougal]

The trick is to get the right balance between absorptivity and emissivity...
A white roof with a chrome headliner would be cool.
A chrome roof with a white headliner is an oven.

 

[Jkarow08]

if you have AC it may not matter. 40s are hot inherently. If no AC and windows down, outside temp is inside temp when moving.

I do have AC...that's the only reason I'm still considering it.

 

[ceylonfj40nut]

Looks like you are in Nicaragua. Hot tropical. With AC on, you create a temperature difference between outside and inside. Heat travels quicker, the higher the temperature difference. A blacktop surface temp will be higher. More heat load on your AC which hopefully can keep up.

 

[Jkarow08]

The trick is to get the right balance between absorptivity and emissivity...
A white roof with a chrome headliner would be cool.
A chrome roof with a white headliner is an oven.

View attachment 3764777

I'm a scientist by trade...how am I going to look cool with you guys forcing me to consider empirical evidence

 

[Jkarow08]

Looks like you are in Nicaragua. Hot tropical. With AC on, you create a temperature difference between outside and inside. Heat travels quicker, the higher the temperature difference. A blacktop surface temp will be higher. More heat load on your AC which hopefully can keep up.

Yep, San Juan del Sur on the southern pacific coast. We have pretty consistent temps year round, low of 75, high of 85 most days, very little variation from the mean. We have a wet season and dry season, about 60" of rain/year coming almost exclusively during the rainy season. It's hot here, but not SW US hot, definitely more humid though.

I need to replace all of the lines on my aftermarket AC (currently all barbed fittings and it leaks), haven't actually got to experience the output yet, hoping it will keep the old girl cool even if I do go black.

 

[45Dougal]

Landrover (I know, I know) safari roof offered a great solution you could rip off..
A secondary roof above the actual roof leaves an air gap. Your actual roof is then always cool in the shade...

 

[Jkarow08]

Landrover (I know, I know) safari roof offered a great solution you could rip off..
A secondary roof above the actual roof leaves an air gap. Your actual roof is then always cool in the shade...

View attachment 3764843

That's cool, I've never noticed one of those (and sshhhh, I like Rovers too). I'm planning on having a roof rack similar to the one below made, was thinking it may make a little shade and offset the absorption of the black.

 

[fireflyr]

I had a black top. Had. Don’t recommend it.

I think it lowered my IQ significantly.

 

[45Dougal]

That's cool, I've never noticed one of those (and sshhhh, I like Rovers too). I'm planning on having a roof rack similar to the one below made, was thinking it may make a little shade and offset the absorption of the black.

My roof rack definitely makes a difference, but the sun through the windows is the killer tbh

 

[Jkarow08]

My roof rack definitely makes a difference, but the sun through the windows is the killer tbh

I'm definitely tinting my windows, that should make a huge difference in greenhouse effect...plus it'll obscure the perfect extortion candidate gringo behind the wheel