Mr Clean Magic Eraser.

There are no chemicals in a Mr. Clean Magic Eraser.

That said, the way that the "eraser" works is that an abrasive component of the eraser material removes a portion of the surface you are rubbing. Think in terms of the very lightest grade of sandpaper.

And no, I would never take one to my roof.

There is some sort of soap in them. I use them on the exterior with good results. I wouldn't use it on the roof.

The "active" ingredient in the Magic Eraser is the foam, not the soap. I think they add the soap to make you think that the soap is doing the trick and hide from you that you can get the foam for cheap.

Pack of 50 for $8.99: >> Clicky <<

The cheapo brands are just as good, because the foam is made by only one source.

I wouldn't..and I could never figure the need to have a gleaming, white, sparkling roof.
The more you walk on it and the more you scrub and use harsh detergents on it the more your will damage it.

Once or twice a year with Spic n Span, Murphy's Oil Soap or Dawn dish detergent and get on down the road.

downtheroad wrote:
I wouldn't..and I could never figure the need to have a gleaming, white, sparkling roof.
The more you walk on it and the more you scrub and use harsh detergents on it the more your will damage it.

Once or twice a year with Spic n Span, Murphy's Oil Soap or Dawn dish detergent and get on down the road.

Agree 100%
Do a simple wash to get the heavy crud off. Mine is parked under messy trees.
No need for a hard scrub. The less time spent on the roof the better.

The single best use for Mr Clean sponges has to effotlessly clean the under side of an awning. They truly. Work like magic on dirty moldy awnings with little to no mess.

It will take a whole lotta Mr. Clean sponges to do a roof. Go with the spic n span or the Dawn method.

If you can't see it, leave it dirty. Cleaning only shortens its life.

I know this is long but here goes:

Truth About EPDM
Rubber Roofs
• EPDM Rubber: What it is and why it lasts so long.
• Proper Care: What manufacturers actually recommend
• WATCH OUT! For RV products that can damage EPDM
rubber & void your warranty!
• How to keep your EPDM rubber roof clean & looking like
new.
Overview
EPDM is one of the most versatile and long lasting materials ever
manufactured for outdoor exposure. Most RV industry experts
consider EPDM rubber roofing membrane the most dependable,
most cost effective and easiest to maintain roofing material there is.
Yet, today's average RVer is deluged with information, a great deal of
it misinformation. Consequently, RVers are spending millions on
unneeded products, many of which can be harmful to EPDM rubber
roofs.
This Public Service Announcement details the truth about EPDM and
reprints manufacturer's guidelines on cleaning and maintaining the
EPDM rubber roofing membrane on your RV. If you have questions
after reviewing the material, please contact Dicor Corporation, the
RV industry's largest supplier of EPDM rubber roofing. Dicor's
address and phone numbers are provided.
Mis-Information, Mistakes & Money
EPDM stands for Ethylene Propylene Diene Monomer. Engineering
specifications describe EPDM as, "Ideal for outdoor applications
because of its excellent resistance to ultra-violet light, ozone, oxidants
and severe weather conditions."
EPDM rubber roofing membrane is made to last 20 years or longer
and has a 10 to 12 year guarantee depending on the brand. The
guarantee does not require the use of any protective 'roof treatment'
or 'roof protector' product and recommends only cleaning. Unlike
natural rubber (latex) or blends (tires & wiper blades), EPDM does
not require periodic applications of any product to protect it from
ultra-violet light or ozone.
The statement or implication that you should purchase and apply a
product to "protect" your rubber roof the elements is misinformation.
Buying and using such a product can be a mistake and may even
damage the EPDM membrane.
Petroleum Distillates... Not for EPDM
Petroleum distillates are incompatible with and should never be used
on a number of plastics including vinyl and rubbers, particularly
EPDM. Engineering specifications rate EPDM's solvent and oil
resistance as "POOR". Dicor's Care and Maintenance instructions
warn:
"CAUTION: DO NOT use cleaners or conditioners containing
petroleum solvents, harsh abrasives or citric based cleaners. You may
cause irreparable damage to your roof."
Laboratory tests conducted in July of 1996 evaluated the effect of a
leading RV "roof treatment" product on EPDM roofing membrane
using standard sunlamp and immersion testing procedures. The "roof
treatment", which contained petroleum distillates, caused a 63%
mass change (swelling). In the summary/recommendations portion
of the lab test the scientists stated they would recommend the "roof
treatment" and more tellingly noted, "Per the MSDS, this product
contains petroleum distillates, a substance that is known to be
INCOMPATIBLE with... EPDM sheeting".
For your rubber roof, for the EPDM door and truck seals around
slide-outs/pop-ups, in the baggage compartments or for the EPDM
door and trunk seals in your car, petroleum distillates are a huge "no
no". And don't be fooled by names such as "organic solvent",
"hydrocarbon carrier", etc. Petroleum distillates by any other name
should NEVER be applied to EPDM. If you aren't sure about a
product, contact the manufacturer and have them send you a copy of
the Material Safety Data Sheet (MSDS). Look under the section
entitled "HAZARDOUS INGREDIENTS". If it lists any petroleum
distillates, do not use it on EPDM.
Frequently Asked Questions
Q: Is it necessary to protect my rubber roof against UV light?
A: No.
Q: What do I need to do to care for my rubber roof?
A: Periodic cleaning (See Dicor Care & Maintenance instructions)
Q: One manufacturer told me their roof treatment product had only a
minor percentage of petroleum distillates, something like 20 or 30%.
Does the percentage matter?
A: No. Usually percentages given are based on weight. Since
petroleum distillates are significantly lighter than water, in reality
30% by weight might be 40% or more by volume. But the percentage
of petroleum distillates doesn't matter. THERE IS NO LEVEL OF
PETROLEUM DISTILLATES THAT IS RECOMMENDED.
Q: If I use a roof treatment product containing petroleum distillates
on my rubber roof, can that void my warranty?
A: Yes
Q: If I'm going to buy a used RV and it has a rubber roof, how can I
tell if the previous owner used petroleum distillates and damaged the
rubber roof? What would the damage look like?
A: Two things: First, swelling. Uneven thickness of material. Second,
loose areas. Petroleum distillates soak in and cause the adhesive to
loosen and the membrane to balloon. Then, when the ballooning goes
down, it may never again adhere properly or completely.
Q: Is it easy to repair tears in the roof membrane?
A: Any tear in an EPDM roof membrane can be repaired using a
number of repair methods. Dicor has a prepackaged peel and stick
repair kit that works well on small tears (up to 8"), a larger kit that
should be used on larger damaged areas, and also rolls of peel and
stick material for long, narrow tears.
Q: Oxidation: My roof seems to oxidize and run down the sides when
it rains. What's going on?
A: First, EPDM roofing membrane does oxidize slowly; it's supposed
to. In a dozen years it may oxidize 10% of its thickness. This is
normal. Cleaning at least four times a year will help greatly, more
often if your local conditions and experience warrant.
Q: The rubber roofing wraps over slightly on both sides of my RV and
you can see it from the ground. It gets dirty and doesn't look good.
What can I do about this?
A: Clean the area and treat it with a product that will repel soiling
and is safe for EPDM. One product that performs and lasts well, is
safe for EPDM and is commonly available at RV stores is Dicors RP -
320S Rubber Roof Guard Protectant.
Dicor Corporation · P.O. Box 1806 · Elkhart, Indiana 46515
Tel. (574) 264-2699 · Fax (574) 293-2017 · Toll Free (800) 837-2059

My niece used one on my son's face and left him with an alkali burn. I don't know what it is but it's not gentle.

Oxy-clean, The hotter the better, put it on and let it set for about 20 minutes out of the sun, scrub a little hose it off. I tried a ton of products this one whitened the roof quite well. It will take off the wax on the sides so have someone hosing off the walls when it drips down. Oh it's also real slippery. I do have a 23 year old rubber roof.