Solar panels on uneven roof

Discussion in 'Self-Build Motorhomes' started by Ian Paul, Aug 3, 2018.

  1. Ian Paul

    Ian Paul Funster

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    having probems fitting solr panel on my roof cant see a way to overcome uneven roof, done a video to explain..
     
  2. shunter

    shunter Funster

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    Had similar problem on my old van I made some adjustable angular brackets to move move up and down and then once all four feet sitting on-roof tighten and glue to roof
     
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  3. Neckender

    Neckender Funster

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    Seeing how flexible the roof is in your video couldn’t you mark the roof where the brackets fit and sikaflex the brackets to the roof and wait until they are glued solidly to the roof then fit solar panel to the brackets.

    John.
     
  4. Robert Clark

    Robert Clark Funster Life Member

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    If the roof is already ply lined I would sugest marking the postion of the brackets on the roof, then drill a hole in the centre of where the bracket will fit, then squirt expanding foam to fill the gap between the metal roof and the ply lining. This will fill he gap between the ply and the roof and make the roof in those areas much more solid
    Then apply loads of Sikaflex to cover the hole and apply the bracket. The panel does not have to be exactly level and the Sikaflex should take up some uneveness.
    Personally I woudlnt use any fixing screws. After 24 hours the Sikaflex is strong enough to hold the panels on its own.
     
  5. jockaneezer

    jockaneezer Funster

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    I know you said flexible panels are more expensive, but it's looking like the replacement Biard flexy panel they sent to replace my first one, which failed within two years is now also failing, again within two years. Persevere with your rigid panel.
     
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  6. jezport

    jezport Funster

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    just make metal angle brackets to fit, simple.
     
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  7. tacr2man

    tacr2man Funster

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    As @jezport says make metal angle brackets with slotted upright
    then drill holes in roof apply sika , then pop rivet base bracket to roof with sealed rivets (like they use on landrovers) sika over top of rivets . Then ensure panel is clear of roof and secure fixings ( use bolts with nylocs) adj sliders to suit . simples.jpg
     
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  8. Lenny HB

    Lenny HB Funster

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    A ridged panel is the right choice given the high failure rate of flexible ones also a lot of them are down to 50% of their output in 5 years compared to a ridged of 20% in 20 years.
    I assume the roof is steel, with the amount of flexing I would make some long aluminum brackets to spread the load and reduce flexing. 2mm angle alloy should do, section size dependant on fixing area, and can either have the ears outwards or under the panel depending on fixing area.
     
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  9. Just smiffy

    Just smiffy Funster

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    I would do pretty much as @Robert Clark has said and make the roof panel stable as when your driving along at speed the solar may catch the wind and start flapping/flexing the roof up and down.....o_O
     

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