On 31 May 2017, at 1:21 pm, Bill Selik (via sccpartners list) <nobody@simplelists.com> wrote:I've had great success with rsr2000 on surface rust/iron but not deep iron stains. I have had better results with 35% hydrogen peroxide. Use plain white paper towels 3 think and saturate the towels then pat down. Let sit overnight 18 to 24 hours. Make sure when you take off the poltice to soak the paper towels in water before disposing of them since if the come in contact with other chemical the can catch fire. If you have never used peroxide before I would contact John Frietag or Fred or email me back so you can take proper percautions. Note even if you remove the stains they may come back if there is continual moisture.Thanks, Bill SelikGourmet Stone CareSan DiegoOn Wednesday, May 31, 2017 3:42 PM, Stuart Rosen <mail@stoneshine.com> wrote:
I would bet one dollar that's rust!
Sent from my iPhoneLooks like iron to me...did you try testing it with RSR 2000 by alpha...Let it sit for a while..If it turns purple its ironOn Wed, May 31, 2017 at 4:16 PM, Mike Marsoun <outerislandstonecare@gmail.com> wrote:Any ideas on this? Tested for tannin and it's not that. It is spreading. Has been exposed to water. Suspecting internal rusting. Told the guy I would get a second opinion.
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