Removing stains on limestone?

Post date: 2024-08-07 03:54:15
Views: 168
I stained my limestone front steps with cork-based "coasters" for flowerpots. How to remove?

I stupidly used cork-based mats or coasters underneath flowerpots on my new-ish limestone steps. I soaked the cork beforehand to try to stop staining, but it didn't work and the coasters left brown circles on the stairs - like big coffee cup stains. The stains are about 2 weeks old. I tried powerwashing and some different household products, which removed some of the staining, but maybe like 50%. The most effective thing seemed to be Softscrub, which has bleach. I am worried about ruining the stone with too much bleach or acid or whatever. The stain is definitely in the pores of the stone - i.e., the powerwasher does not take it off.

After some research on the web, I have three methods that I and thinking about trying: (1) a homemade poultice made from baking soda and 12%-strength hydrogen peroxide, which you are supposed to leave on the stone for 24 hours (I am worried about overbleaching though); (2) a professional stone cleaning soap made by Black Dimond; or (3) leaving on the Softscrub for an hour or so before rinsing it off - the Softscrub seemed effective before, though it also seems harsh.

Any thoughts on these methods or others? Thank you!
Please click Here to read the full story.
 
Other Top and Latest Questions:
Financials have the market's deepest bench of near-breakouts
The market didn't like what it heard from the Fed and its new leader Kevin Warsh
Can you get a loan for a wedding? The do's, don'ts and alternatives
Chairman Warsh abstains from giving rate forecast as several members signal a hike in 2026
2-year Treasury yield rockets higher as many Fed officials signal possible hike this year
Jim Cramer says this chipmaker is still a buy after soaring more than 200% this year
Mr. Queen: Full season
Boston recs, please!
Oil falls as International Energy Agency forecasts supply glut next year after U.S.-Iran deal
Why Wall Street banks and foreign borrowers are rushing to tap China’s cheap money