Home>Discussions>EXTERIORS>How to clean large area of Pavers
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A. Spruce
Re: How to clean large area of Pavers
drewp wrote:

I was thinking that there would be some type of a machine/steamer/buffer similar to what you see them using on a roof to clean shingles/remove moss, etc.

The only thing in that vein I can think of would be along the lines of an orbital floor polisher with a scrub brush base plate. You know the kind that the janitor used to polish the floors at your school when you were a kid.

Good luck and let us know what you find and how things work out.

drewp
Re: How to clean large area of Pavers

Yep, that's exactly what I was thinking. I've rented those orbital polishers before with a scouring disc. I'm just not to sure how well it would "float" over a rough surface like pavers. This projects going to be a couple of weeks down the road. I will update on how I made out.

dj1
Re: How to clean large area of Pavers

I know you want to run a sander-polisher over the stones, but remember this: the pavers have a convex finish - meaning, the center of the paver is higher than the perimeters. What does it mean? it means that the sander may miss some of the low points, and these point are in need of cleaning or bleaching the most.

Possible solution: sand-polish AND use bleach (or bleach solution like Ordjen mentioned).

Take some BEFORE and AFTER photos and show us. Good luck.

A. Spruce
Re: How to clean large area of Pavers
drewp wrote:

Yep, that's exactly what I was thinking. I've rented those orbital polishers before with a scouring disc. I'm just not to sure how well it would "float" over a rough surface like pavers. This projects going to be a couple of weeks down the road. I will update on how I made out.

I recall seeing brush attachments for them in addition to the "scrubby" pads. A brush is going to work much better than a scrubby pad surface.

t_manero
Re: How to clean large area of Pavers
dj1 wrote:

One last suggestion:
I've cleaned mold and mildew off roofs with 100% bleach, using a regular garden sprayer. I got results in 20 minutes.

My pitched (shingle) roof has some mildew which is deemed not damaging, but causes the roof to have different shades of black.

As the sole family money earner, I don't want to climb the roof and servces in No. Va (big government & wealth) is very expensive, and this looks like something I can handle if I had directions.

My questions: what cleaner should I use, and how to use it so it doesn't damge plants/trees/soil.

I saw a "safe" cleaner in costco for about $30 but it wasn't clear to me to how to use it on a roof.

My downspouts are tied into the ground somehow, so when I rinse off the cleaner, the mildew & cleaner waste water will get into the ground.

Any thoughts ?

dj1
Re: How to clean large area of Pavers

Use bleach, don't add water.
Use a gallon size spray pump, spray on the affected area. Don't soak the shingles and don't let the bleach run.
One gallon (about a dollar) will treat a square (100sf). Can you handle that?
Wait 20 minutes and say "that was easy". Don't rinse.
A good project for this weekend.

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