Good Sam Club Open Roads Forum: Travel Trailers: black strips on roof
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 > black strips on roof

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riven1950

NC

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Posted: 07/09/20 07:32pm Link  |  Quote  |  Print  |  Notify Moderator

Hey,

Our 2019 2500RL GD has been in storage for almost a year. We just brought it home in preparation for a trip. I noticed the roof is in decent shape, however there are strips that are darker. I guess this is where the roof trusses are?

Anyone familiar with this? Cause for dark strips?

No trees where it was stored.

Thinking of washing the roof. What should I use?

Thanks,
TR [image]

Lwiddis

Lone Pine, CA

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Posted: 07/09/20 07:54pm Link  |  Quote  |  Print  |  Notify Moderator

Washing the roof for what purpose other than for maintenance...caulk, Heng’s etc.?


Winnebago 2101DS TT & 2020 Chevy Silverado 1500 LTZ Z71, 300 watts solar-parallel & MPPT, Trojan T-125s. TALL pole for flags. Prefer USFS, COE, BLM, NPS, TVA, USF&WS, state & county camps. Bicyclist! 14 year Army vet - 11B40 then 11A - (MOS 1542 & 1560)


gbopp

The Keystone State

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Posted: 07/10/20 04:54am Link  |  Quote  |  Print  |  Notify Moderator

Probably the dark strips are caused by condensation forming along the roof trusses. They will stay damp longer than the rest of the roof and attract more dirt/dust than the roof.

Murphy's oil soap is often used on RV rubber roofs. There are other products available.
When you wash/scrub the roof you are removing some of the white coating.

rjsurfer

North Carolina

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Posted: 07/10/20 04:54am Link  |  Quote  |  Print  |  Notify Moderator

Probably the roof cross members (aluminum?) causing condensation on roof allowing mildew to form.

Like others have said don't bother with trying to clear it off. I don't recommend scrubbing any RV roof.

Ron W.


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riven1950

NC

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Posted: 07/10/20 05:35am Link  |  Quote  |  Print  |  Notify Moderator

ok folks, sounds good and saves me some work [emoticon]

Thanks for the replies

Busdriver

Shepherdsville Ky 40165

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Posted: 07/10/20 06:03am Link  |  Quote  |  Print  |  Notify Moderator

Grand Design that is not a problem, I have a reflection that does the same


Busdriver 2019 2500 Chevy Duramax , - 2017 Grand Design 303 RLS

kellem

Shenandoah valley,VA

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Posted: 07/10/20 07:17am Link  |  Quote  |  Print  |  Notify Moderator

Perhaps a little overboard here......I wash the roof and entire trailer every 2 months then apply 303.

Recently sold a 2009 Starcraft trailer that looked brand new 11 yrs later.

So naturally I would recommend washing the roof as preventative maintenance.

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