Roof Wind deflectors

[Manic]

Cleaning the roof yesterday I noticed the wind deflectors fitted in front of 2 Heki roof lights where nearly coming unstuck, so I remo them.
Now I’ve replaced the roof vents with sealed type, would I be better using the spoilers in front of my solar panel which are mounted near the front of the roof.

 

[Mikey RV]

Great idea, why not add a couple more and go for this look.

 

[Tea Bag]

Hi.
Knowing NOTHING about solar panels/'lectric. I leave ours clear underneath to let it cool/breath. Am i wrong ? It will be left clear anyway because it helps me reach areas of the roof when cleaning/hose piping.
Tea Bag

 

[TinaLes]

I did look at fitting wind deflectors years ago when I fitted a large solar panel on the van roof to cut down on any potential drag it ma have caused. I saw a mate of ours with loads of dosh had fitted a few on his roof, but when I saw the price of The Fiamma ones, the Scotsman in me said no way am I paying that price!
I have been looking for something else that is white UPVC that would do the job, but not that recently, and I haven't found anything yet.
Here's a link to the Fiamma ones.
LES

Fiamma Universal Spoiler Roof Vent Skylight Spoiler Motorhome Caravan Campervan 8004815283384 | eBay

Universal aerodynamic roof spoiler, ideal for reducing vibrations and roof light noise while travelling. Made with UV-ray resistant sturdy PVC material. We will make every effort to ensure that our cooperation has been successful, for you to be satisfied with our products and services.

www.ebay.co.uk

 

[Guigsy]

Hi.
Knowing NOTHING about solar panels/'lectric. I leave ours clear underneath to let it cool/breath. Am i wrong ? It will be left clear anyway because it helps me reach areas of the roof when cleaning/hose piping.
Tea Bag

While you're driving, there's probably more than enough airflow to keep them cool. While you're stationary, spoilers will have virtually no effect. In the baking midday sun on a still day, most of the air moves underneath from convection, so as long as there's a reasonable gap around two sides, it'll probably be fine.

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[Sasbo]

Manic I use this with the end caps to make a roof spoiler at the front of solar panels. Stuck to the roof with Sikaflex it's worked well on 3 motorhomes.

MK CT1WHI Trunking 40x40mmx3m (3m)

<p>The Ega Cornice range from MK is designed for surface mounting at the junction of a wall and a ceiling. It acts as a functional range as well as a decorative way to cover cables. It is suitable for use with Ega Mini Trunking. </p> <p style="text-align:justify"><o:p></o:p> </p> <p> The MK...

www.tradesparky.com

 

[Lenny HB]

Cleaning the roof yesterday I noticed the wind deflectors fitted in front of 2 Heki roof lights where nearly coming unstuck, so I remo them.
Now I’ve replaced the roof vents with sealed type, would I be better using the spoilers in front of my solar panel which are mounted near the front of the roof.

Sounds like a good idea as the roof vents will naturally direct air over their curved surfaces so not really needed.

 

[Manic]

Decision made, deflectors in front of solar panels.

 

[Bertilak]

They actually look good. What's the brand / source please?
One think that annoys me about our new DIY Ducato is that above 60mph wind-noise form the skylight is loader than everything else... So I'm looking for options.

 

[Manic]

They actually look good. What's the brand / source please?
One think that annoys me about our new DIY Ducato is that above 60mph wind-noise form the skylight is loader than everything else... So I'm looking for options.

The ones on mine are probably from when the van was newish around 2001,these where in front of the rear roof vents, the nearest I can find now are these which are 40mm taller

Fiamma Universal Spoiler | Leisure Outlet

www.leisureoutlet.com

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[Bertilak]

Thanks, that explains it. Hymer design, not the Fiamma one, which to me looks like it was knocked up an hour before the weekend...

 

[gerry mcg]

I have a spoiler from Functional Design in Germany on our Ducato H3 chassis globecar Revolution PVC https://www.functional-design.de/produkte/dachspoiler-eurochassis.html

 

[Mikey RV]

What did you stick them on with.

 

[Manic]

What did you stick them on with.

sorry I tried to find some spoilers like you showed earlier but couldn’t find a supplier in uk

 

[gerry mcg]

What did you stick them on with.

It came with a 200ml tube of (i assume) some form of PU structural adhesive
I presume the correct Sika would be perfectly adequate

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[Jev88]

I was told that if you get the shape or distance to solar panel wrong then the tumbling rotating air can cause more lift on the panel than no deflector at all?

 

[Terry]

If it's close to the panel any wind will go over I made my own with a piece of 95 mm plastic architrave stick ends with super glue then stuck to roof with my go to adhesive Puraflex 40

 

[Terry]

Just checked and Eurocell do 95 X 6 mm plastic architrave for £7.20 for five mtrs

 

[G-RMPS]

Hope your solar panels are secure. A wind deflector is like an airfoil it will lower the pressure over the panels “suction if you prefer”.