Efflorescence on slate on porch

[Michael Ellis]

A customer contacted me to remove efflorescence from outdoor slate that was beneath a fountain for years.
On Sep 2, I applied Pro's Choice ProAcid 1:3
Scrubbed with black brush Brush Pro.
Dwell 20'.
Rinsed with Turbo.
Dried with Airpath.
Minor impact.
The tile in the best shape is a result of customer pressure washing previously. I put ProAcid straight up in a pool and asked the customer to rinse away when it evaporated. He sent me the result yesterday, Sep 3. No joy! (image no.4)
How do I remove this efflorescence? (I believe it comes from the Thinset, which is white).
Thanks,
Michael Ellis

 

[hogjowl]

Go to https://www.thepowerwashstore.com and look at F9 Efflorescence and Calcium Remover

 

[FredC]

look at F9

?

 

[Mikey P]

There is no fixing that Sarge.


The more you get it wet the worse it's going to make it.



You would have an easier time trying to stop waves at the beach..

and don't listen to our dopey pig peddler who's suggestions are about as stupid as throwing suntan lotion at the waves....

 

[FredC]

F9 Efflorescence and Calcium Remover - 1 Gallon

F9 Efflorescence and Calcium Remover 1 Gallon removes efflorescence, calcium, mortar and can be used to etch concrete in higher concentrations.

www.powerwashstore.com

 

[Mikey P]

F9 Efflorescence and Calcium Remover - 1 Gallon

F9 Efflorescence and Calcium Remover 1 Gallon removes efflorescence, calcium, mortar and can be used to etch concrete in higher concentrations.

www.powerwashstore.com

It would work great on those tiles

If only they weren't installed...

 

[hogjowl]

Yeah
Don’t listen to me
Listen to Fred

 

[FredC]

It would work great on those tiles

If only they weren't installed...

I don't know if it will work or not....worth a shot I suppose

I just put the direct link to the product because Marty didn't seem able to






i would use it just because they used AWOLnation for the soundtrack and not GVF

 

[Michael Ellis]

I am determined to win. Gonna order two gallons...Marty...don't know the application rate. Big bucks for shipping so I hope it is potent $330! I can use Airpaths to flash dry to minimize cap effect, Mike. Then impregnate. DryTreat?? I'm not pulling the trigger until ya'll comment.

 

[FredC]

I am determined to win. Gonna order two gallons...Marty...don't know the application rate. Big bucks for shipping so I hope it is potent $330! I can use Airpaths to flash dry to minimize cap effect, Mike. Then impregnate. DryTreat?? I'm not pulling the trigger until ya'll comment.

Holy shit.....I'd have probably just picked up some low fume muriatic acid instead....but I guess there is more room for error here

as far as application rate

https://www.powerwashstore.com/Content/files/PDFs/F9%20Efflo%20Instruction.pdf

 

[FredC]

also it looks like other places sell it so I'd see if I could get a better shipping rate

F9 Calcium and Efflorescence Remover

Discover the F9 Calcium and Efflorescence Remover, a breakthrough in cleaning technology. This user-friendly solution removes calcium, efflorescence, and hard water stains efficiently, offering up to 95% less fumes than traditional acids. Perfect for concrete and masonry, it's ideal for...

www.cleanprosupply.com

F9 Efflo/Calcium Remover

High Performance Efflorescence and Calcium Remover

shop.softwashsystems.com

 

[hogjowl]

Hope it works for you!

 

[FredC]

Hope it works for you!

I think you should be on the hook for shipping if it doesn't.

 

[hogjowl]

Why?
You’re the one that made my link work!

 

[roro]

He's an evolutionist, not a creationist

 

[hogjowl]

Oh shut up

 

[clean image]

F9 or media blaster.

 

[Michael Ellis]

F9 or media blaster.

How do you recover the media? This is slate on the front porch and entrance walkway. I cannot leave a mess.

 

[Michael Ellis]

Good news, Alex from the PowerWashStore called today to say there was an e-commerce mistake; They offer free shipping over $100, so I am getting four gallons of F9 for half the first cost - $186. That works!

 

[Mikey P]

Good news, Alex from the PowerWashStore called today to say there was an e-commerce mistake; They offer free shipping over $100, so I am getting four gallons of F9 for half the first cost - $186. That works!

How many days of rain per year does that porch see?

 

[hogjowl]

You’ll soon learn not to tell Mikey ANYTHING,

 

[Michael Ellis]

How many days of rain per year does that porch see?

The porch is under cover on the north side - no rain. He had a fountain spilling on it for years. It's gone. The slate on the exposed pathway looks better - I joked it looks better because the rain rinses it. The Thinset is white like the calcium - he had several removed when I took this image.

 

[Mikey P]

The porch is under cover on the north side - no rain. He had a fountain spilling on it for years. It's gone. The slate on the exposed pathway looks better - I joked it looks better because the rain rinses it. The Thinset is white like the calcium - he had several removed when I took this image.

Good luck and don't promise anything.