It gets hot under the bed cover.

[CenTexMav]

I tossed a thermometer under the tonneau cover. WeatherBug said it was 103. It was 121 under the tonneau.

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[Dmthomp32]

It’s that crazy heat that has caused the glue on some of these tonneau covers to melt!

 

[Ozarkbeard]

I tossed a thermometer under the tonneau cover. WeatherBug said it was 103. It was 121 under the tonneau.

Well, it's basically a solar oven.

 

[CenTexMav]

Well, it's basically a solar oven.

True... I was curious how hot it got since the felt covers on the Ford hard roll-up tonneau came off. Ironic that something meant to be in the elements doesn't stand up to the heat. Granted .. the heat has been a little excessive in Texas this year... but they started coming off at the beginning of the summer.

 

[rivermaverick]

I haven't put a bed cover on my Lariat yet, figuring with AZ temperatures it would be a solar oven back there. Of course you could probably put the crock pot in there and cook dinner .

 

[sundog]

Throw that thermometer in the cabin with the doors and windows closed and you'll see the same or higher temps, but here the black tonneau cover seems to be acting like asphalt and absorbing radiation (think car races where they say air temp vs track temp.)

 

[CenTexMav]

I haven't put a bed cover on my Lariat yet, figuring with AZ temperatures it would be a solar oven back there. Of course you could probably put the crock pot in there and cook dinner .

True... Back of the truck might smell kinda funky though.

 

[GreenLady]

Throw that thermometer in the cabin with the doors and windows closed and you'll see the same or higher temps, but here the black tonneau cover seems to be acting like asphalt and absorbing radiation (think car races where they say air temp vs track temp.)

You’re not kidding! Yesterday I did a remote start at 1:30 PM so I could go to the store. I have a shiny silver sun shade on my windshield. When I started driving I checked my rear view mirror only to see everything shaking.

I was so shocked I didn’t know if it was my truck, the bed cover or what. I immediately pulled over to give the truck a rest. When I started driving again the same thing happened so I pulled over again. I waited a few minutes and turned the AC temp down because I started sweating.

I started driving again and looked in the rear view mirror again to see the shaking subsiding and finally stop. It was then that I realized the glue holding the mirror had melted and the mirror was about to fall! I’m ready for winter!

 

[Halo9x]

It’s that crazy heat that has caused the glue on some of these tonneau covers to melt!

Glad I chose a retractable cover. I can only imagine how hot it gets back there.

 

[NJBob]

All the covers I have seen are black. Perhaps another color would improve this. But who would want a white cover?

 

[CenTexMav]

You’re not kidding! Yesterday I did a remote start at 1:30 PM so I could go to the store. I have a shiny silver sun shade on my windshield. When I started driving I checked my rear view mirror only to see everything shaking.

I was so shocked I didn’t know if it was my truck, the bed cover or what. I immediately pulled over to give the truck a rest. When I started driving again the same thing happened so I pulled over again. I waited a few minutes and turned the AC temp down because I started sweating.

I started driving again and looked in the rear view mirror again to see the shaking subsiding and finally stop. It was then that I realized the glue holding the mirror had melted and the mirror was about to fall! I’m ready for winter!

I had a Dodge Challenger that used to do that... I would go over a dip and the mirror would pop off. I had to try a couple different glues made for that before I found one that worked.

 

[fossil]

I started driving again and looked in the rear view mirror again to see the shaking subsiding and finally stop. It was then that I realized the glue holding the mirror had melted and the mirror was about to fall! I’m ready for winter!

had one fall years ago, stopped at auto parts for some glue. what did you do to correct?

 

[cyberdog]

Wonder if there's a difference with the hollow, double wall retracting covers? In theory, the air-gap between the outer surface and the inner surface might potentially keep some the heat from transferring below the cover. By no stretch of the imagination is it a test, but the few times on hot sunny days I've opened mine to pull something out, it didn't seem to have a perceivable difference in temperature from outside the truck. - The top of the tonneau was certainly warm/hot feeling, having baked in the sun.

Now I want to toss a thermometer under there and see what happens on the next hot sunny day. - It's cloudy, rainy, and only going into the low 80s today, and we were low 70s and overcast with showers yesterday.

It may suck a few inches of upright space, but really like my retractable regardless.

For the mirror, never imagined the mirror glue would melt like that! It usually takes a sharp scraper to even remove the hard crust residue before re-gluing the mirror mount back into the windshield. Any chance the Permatex mirror glue is the one that held? - I keep one in the house for a just in case, but haven't needed to re-glue on in years. (Probably just jinxed myself).

 

[GreenLady]

had one fall years ago, stopped at auto parts for some glue. what did you do to correct?

I turned the temp down and it seemed to stabilize it. Just glad it wasn’t the truck or tonneau.

 

[GreenLady]

Wonder if there's a difference with the hollow, double wall retracting covers? In theory, the air-gap between the outer surface and the inner surface might potentially keep some the heat from transferring below the cover. By no stretch of the imagination is it a test, but the few times on hot sunny days I've opened mine to pull something out, it didn't seem to have a perceivable difference in temperature from outside the truck. - The top of the tonneau was certainly warm/hot feeling, having baked in the sun.

Now I want to toss a thermometer under there and see what happens on the next hot sunny day. - It's cloudy, rainy, and only going into the low 80s today, and we were low 70s and overcast with showers yesterday.

It may suck a few inches of upright space, but really like my retractable regardless.

For the mirror, never imagined the mirror glue would melt like that! It usually takes a sharp scraper to even remove the hard crust residue before re-gluing the mirror mount back into the windshield. Any chance the Permatex mirror glue is the one that held? - I keep one in the house for a just in case, but haven't needed to re-glue on in years. (Probably just jinxed myself).

I hope you didn’t jinx yourself I couldn’t imagine it was the mirror which is the reason I kept pulling over.

I can’ imagine the temperature in the bed being cool with a black vinyl tonneau and black SIBL. It’s like a black roof on a house - absorbs heat and the attic is an inferno

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