Forum Discussion

stickbowjoe's avatar
stickbowjoe
Explorer
Feb 17, 2014

Stick to Lance TPO roof?

I want to install ~140 watts of solar generation on the roof of my new Lance 850.

I have determined that the wiring, and a suitable plug, are in place.

I think. Anyway, there is a little covered plug in the side of my fridge vent cover, and the dealer told me that is what it is for.

Assuming the above is true, I can do this. My electrician skills start and end with the ability to plug stuff in.

I really like the idea of just pasting that rascal to the roof, and drilling no potential water entry points.

Good idea? If so, recommended adhesives and surface prep and such?

If not, alternatives?

I would also be grateful for recommendations regarding which panel in the 130-150w range to buy, and where to buy.

Oh, and if any of the assumptions I have made above are ill-founded, please chime in.

I ain't stupid, but in this regard, I am sure-enough ignorant.

Thanks.

Joe
Truck Campers
  • spadoctor's avatar
    spadoctor
    Explorer
    Feb 17, 2014
    you can NOT just glue to the TPO and have it stay. It may bond to the TPO but there is a good chance the wind would separate the membrane from substrate
  • kerry4951's avatar
    kerry4951
    Explorer
    Feb 17, 2014
    I personally would not trust just gluing or taping them down. I used aluminum "L" brackets and I first applied butyl tape to the bottom of the bracket, then pushed the brackets down onto the roof. I then secured with several screws into the roof. The butyl caulk squeezed up thru the screw holes, so after tightening the screws down, I felt confident that the holes were sealed properly. I then encased the entire bracket base around all sides and over the screw heads with ample amount of Dicor. My panels have been on for 3 years and about 25K miles and so far they are still solid and trouble free.

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