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-   -   Remove Silicone Based Sealant from Brick (http://www.diychatroom.com/f105/remove-silicone-based-sealant-brick-181986/)

markstg 06-17-2013 11:27 AM

Remove Silicone Based Sealant from Brick
 
Hi,

I layed old St. Louis solid Brick on the exterior porch and patio floors and interior kitchen floors of my house 6 months ago. The bricks are laid on a concrete slab.
After laying and mortaring, I acid washed with Muratic Acid, Let dry for 24 hrs, then applied Prosoco Limestone and Marble Protector (StandOff a Silicone based sealer). Within 6 weeks, the bricks have turned from a deep red to a light red/grey. It appears the bricks have effloresced under the sealer, and I have not been able to remove it using Prosoco's Safety Clean or Muraitic Acid.

It seems the only way to get to the efflorescence for removal is to remove the StandOff sealer with Prosoco's Dicone NC9. This will be a messy process, especially inside.

Any ideas would be welcome.

stadry 06-18-2013 09:55 AM

too bad you didn't 1st apply a vapor barrier to the slab,,, guess you're left w/plan b now :furious: what did prosoco's rep tell you ?

markstg 06-18-2013 12:08 PM

Quote:

Originally Posted by itsreallyconc (Post 1203226)
too bad you didn't 1st apply a vapor barrier to the slab,,, guess you're left w/plan b now :furious: what did prosoco's rep tell you ?

Never thought to need a vapor barrier over the slab before laying the bricks. Neither did my bricklayer. Sure wish I had known better.

Basically Prosoco rep gave me a few bottles of their various cleaners and the Dicone and said to try small sections and see what works best.

Tried the Dicone and brick is coming out splotchy.

stadry 06-25-2013 05:12 PM

http://www.concreteconstruction.net/concrete-surfaces/sealer-remover.aspx?utm_source=newsletter&utm_content=jum p&utm_medium=email&utm_campaign=CCIU_062513&day=20 13-06-25 ,,, what's the worst that could happen ?


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