bigred1cav
ohio
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Joined: 09/14/2009
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What causes the white streaks to emanate from the top of the coach? Is there a cure?
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ScottG
Bothell Wa.
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Joined: 02/25/2005
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Ah man, I thought maybe there was a new no cholesterol kind of steak out. 
Don't know if you have a EPDM roof or not but they naturally age by chalking off the white protective layer.
Scott, Grace and Wesly
2003 Dodge 3500 4x4, 6 speed Cummins (lightly bombed),
2004 Forest River 25RKS many, many mods.
H0NDA eu2000i
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bsinmich
Holland, MI
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Joined: 11/18/2000
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If you get an aluminum roof you could have black streaks.
2003 Newmar Mountain Aire, Workhorse W22, 2008 Saturn Vue, Falcon 5250, & US Gear Unified Tow Brake
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happy-2
calif
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Joined: 11/27/2005
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yes as just stated. its the rubber roof.it chaks and leaves white streaks down the side.its time for a good cleaning and a dicor roof treastment. I just did my 1999 rubber roof and now im ready for another 10 years.
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Doug and Cassi Glass
Clifton Forge, VA
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My Fiberglas roof does it. I cured it by putting a coat of Mop n Glo on it. Just be careful it doesn't run down the sides.
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bigred1cav
ohio
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Thanks
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gfs1943
Whitney, Texas
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Albino cows.
gfs1943
USAF, Retired (1962 - 1983)
'00 Itasca Horizon 36LD
Cat Diesel Power
2006 Honda CR-V
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down home
south
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Chalking of killed rubber from the sun but....our roof is fiberglass and we get lots of stubborn streaking from rain, dew and air conditioner.
Dicor sealant is the culprit. Other sealants probably the same way.
An opportunity to make a ton of money is here. All someone has to do is engineer a longer life flexible sealant that doesn't bleed or degrade, or whatever the term is, like this.
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dougrainer
Carrolton, Texas
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There are various causes but one of the most common is the Butyl or putty tape that is used to install the roof top and side wall windows and appliances and IF there is not silicone or roof top sealant at those areas, it leaches the black or white residue. Dirty roofs are another. IF you don't keep your roof clean, WHAT do you think happens to all that dirt and tree sap and debris when it mixes with rainwater and flows over the sidewall??? Most RV makers that offer full paint make sure all these type areas are sealed to keep it from ruining the paint job on the RV when washing or rainwater runs off. Doug
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dougrainer
Carrolton, Texas
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down home wrote:Chalking of killed rubber from the sun but....our roof is fiberglass and we get lots of stubborn streaking from rain, dew and air conditioner.
Dicor sealant is the culprit. Other sealants probably the same way.
An opportunity to make a ton of money is here. All someone has to do is engineer a longer life flexible sealant that doesn't bleed or degrade, or whatever the term is, like this.
Dicor sealant DOES NOT cause this problem. Doug
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