Mr Clean Magic Eraser.

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

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.

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.

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.

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.

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.