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Any experience with cleaning this?

John Orr

UAMCC Treasurer
This structure is made of some type of plastic/resin or fiberglass. The problem is that it has not been cleaned since construction (13 years) and the white silicone caulk is black and being carried down the panels. I need to clean the caulk - as well as the panels.

Here's what I've tried on the panels: Simple Green, full strength, Krud Kutter and an industrial non-butyl cleaner supplied by the property manager. All were applied with a car-wash brush and rinsed without pressure. The streaks were reduced, but shadows remained. I also tried a Magic Eraser (in a small, inconspicuous area) and it did a fair job of removing the shadows.

On the caulk, I used varying %'s of chlorine - including 12.5%. It lightened the caulk to gray. Even with scrubbing, I could not get it white.

I spoke with Mike at Eacochem and he's sending me a care package.
 

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Ken Fenner

Active member
Once caulk is blackened, John, it stays that way. At least that's been my experience throwing everything at it. The panels probably need a resto acid. GS Restoration or OneRestore would be what I would probably go to.
 

John Orr

UAMCC Treasurer
Once caulk is blackened, John, it stays that way. At least that's been my experience throwing everything at it. The panels probably need a resto acid. GS Restoration or OneRestore would be what I would probably go to.

Well, I hope that Eaco Chem has a solution. They sent me before and after pics of a building that looks similar, but... BTW, in addition to the cleaning, the customer is wanting an estimate for waxing!
 
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