Hi RogerAs long as there's no soiling or coating on the surface there's a product I use for stains when it works it's fast and it's incredible. A few hrs. Or 24hrs.It a hydrogen peroxide base. It's a hair product that women use for lightening their hair.I buy the storebrand by the gallon at a beauty salon supply store.L'Oreal 40 volume, regulator oxidizer. Link below.2 two weeks ago, upstairs balcony brand-new printed Black and white concrete tiles 50sqft. Covered with sawdust from the tree cutters. It look like permanent yellowing stain the concrete. I covered it with this product in one hour. Return the next day rinse it off with a garden hose no scrubbing at all. I made $1000.Did they use an additive (latex or acrylic) with the grout?
From: sccpartners@stoneandtilepros.
simplelists.com [mailto:sccpartners@stoneandtilepros.simplelists. ] On Behalf Of Roger Konarski (via sccpartners list)com
Sent: 02/20/2017 7:56 PM
To: Sccpartners Email Support
Subject: Yellow Grout Lines
I would appreciate any feed back on this issue. New construction, and white grout lines are turning yellow. Why is that happening and what can be done to correct the problem?
Thanks,
Roger @ Restoration Stoneworks LLC
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