I previously used a dilution of bleach which worked great but I recently waxed the exterior and don't really think it would be good to have a bleach solution running down the side. :/. Is there anything that will whiten the roof without harming the wax job?

Easiest is to simply use a mild detergent and a medium-stiff brush to scrub it. Now, if the roof is showing its age, the white coating may be flaking off to show the darker membrane.Lyle

I've heard Spic and Spam is suggested by the manufacturer and folks report it does a good job.

Keep the bleach off the roof. It will dry out the rubber before it's time. Just use a soft brush & mild soap that will not hurt the roof or your wax job. I get the logic. Any dirt on the roof goes down the side.

My roof is whiter than.... Who cares?

Lwiddis wrote:My roof is whiter than.... Who cares?I haven't washed mine in two or three years because I cant see it and washing doesn't do it any good. But I can see keeping it cleaner if it's visible like on some fivers.

How to whiten the roof without harming wax job?

FLY_4_FUN
Explorer
Mar 14, 2017
The primary reason I wash my roof with gently soap yearly in the spring is to get a good look at its condition. I inspect the caulking, vents, a/c shroud, wineguard antennae and all the other potential leak areas. Also a good time to treat the slide out seals that cant be reached from the ground. For sure be cautious on a wet/soapy roof and ensure your roof can take weight as per manufacturer.

Daryll
Dtank
Explorer
Mar 14, 2017
ScottG wrote:
I've heard Spic and Spam is suggested by the manufacturer and folks report it does a good job.

Spic and SPAM ??..:@

If you can stand the stuff - eat the spam - and stick with mild dish soap solution - black spots mean it's time to re-coat the roof.

NO bleach!

Google EDPM roof care info, etc.

:C
Veebyes
Explorer II
Mar 14, 2017
Dish detergents strip wax. Look for automotive soaps that do not. Meguires, in the pink bottle does not. Good stuff. About a cap full in the bucket is enough.

Start with the roof. Give it one of the roof conditioners or something like 303 afterwards. Keeps the black streaks to a minimum.
JIMNLIN
Explorer III
Mar 14, 2017
All detergents will strip wax.
I don't know of any product that will clean or whiten the roof per the roof material mfg recommendation that doesn't take the wax off the sides of a trailer when its rinsed off.

My '97 5er with a 32' roof surface has been washed just once many years ago to remove oak tree sap. This roof can't be seen down the road or up close like some roofs.
drfife
Explorer
Mar 14, 2017
cpaulsen wrote:
Dawn dish soap...long handle brush and water.

Dawn is a great cleaner, but it will strip wax.
dewey02
Explorer II
Mar 14, 2017
garyp4951 wrote:
I would think spam would make it greasy. lol

Yes, but we all know that you can open a can of Spam and toss it on the counter for 3 months and it will last forever and still be edible.

So perhaps putting Spam on your roof is better than RV Armour and will make your roof last forever.
cpaulsen
Explorer
Mar 14, 2017
Dawn dish soap...long handle brush and water.
ScottG
Nomad
Mar 14, 2017
garyp4951 wrote:
I would think spam would make it greasy. lol

:B
garyp4951
Explorer III
Mar 14, 2017
I would think spam would make it greasy. lol
ford_truck_guy
Nomad
Mar 14, 2017
Me Again wrote:
ScottG wrote:
I've heard Spic and Spam is suggested by the manufacturer and folks report it does a good job.

Yep and long handle brush and lots of water.

^^^ what they said, Spic and Span with TONS of water... then wash the trailer