F9 plus letters to be long enough for title

@Racer it cleans great! Lol I mean the one time I’ve used it, it worked for what I needed it for the first time. I’m a believer for now. I carry F9 products as well and some others that my supplier has on had for those one offs

The first time I tried it was on a battery acid stain on my driveway. Flipping a golf cart and wasn’t thinking when I pressure washed it, nasty stain! Tried it at about 25% and it helped but didn’t get it all out. I found 50/50 worked pretty well. I’d guess you’re right on light rust stains on siding or whatever, 25% would probably work just fine.

Is this a relatively straightforward job to remove this efflorescence using F9 Efflo? Are chances good that the results will be ok or will the stains come back? Should i plan on doing several treatments? If so, how long between each?

Besides rinsing other surrounding surfaces and wearing PPE, any other precautions to take?

Thank you.


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If those pics are current…MOVE SOUTH! :grin:

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Haha! No, the customer sent those pics which were taken at an earlier time.

I haven’t cleaned efflorescence before, i’m interested in taking it on but i’m trying to evaluate the risk factor. Does this look like a relatively safe job or is this a “walk away” situation? Would one treatment likely provide good results?

I use F9 EFLLO, works great…

I’ve read on threads on this forum that sometimes you gotta treat 5 or 6 times 'cause it keeps coming out a few days later… What’s the best way to avoid this?

Efflorescence is water soluble salts being deposited on a surface. It will come back in the future but takes a little time, if water is still accessible to that area. I’ve had good success on one treatment with the f9 product…

Thanks Kentucky1234, i’ll go ahead and quote it but tell them it’ll come back…

Sometimes it won’t, but if water is finding it’s way in and out of the brick or block is susceptible to efflorescence…see it a lot on new construction. I would tell them there’s a possibility it will come back in the future if conditions are right.

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Efflorescence is a result of an underlying moisture issue. All we can do with F9 is mask the issue for a while. Until the underlying issue is resolved you can count on them being a repeat customer.