Looks like etch marks. I would charge $4,000 to $5,000.00 it's a pain in the butt job. If they don't like to price let someone else stand in that shower for 2-4 days and hold up an hand machine.

Thank you
Carl Staples
Classic Marble & Stone Restoration
610-356-4100
www.marblerestore.com

---

From: sccpartners@stoneandtilepros.simplelists.com <sccpartners@stoneandtilepros.simplelists.com> on behalf of Mike Alston <realmikealston@gmail.com>
Sent: Thursday, June 7, 2018 9:33 PM
To: sccpartners@stoneandtilepros.simplelists.com
Subject: Mineral deposits

 

After scratching the wall and nothing came off I believe this is mineral deposits.

 
Visit list archives, subscribe, unsubscribe or change your subscription
preferences:
https://nam03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fstoneandtilepros.simplelists.com%2Fsccpartners&data=02%7C01%7C%7C6eeb08d30d0c4ee43fc008d5ccdfefd6%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636640184524526583&sdata=dF%2BjoemqL94426TGlgjPlq7c1%2BFojVh%2B%2FmUEG53TIHQ%3D&reserved=0
 
Start a new conversation (thread):
sccpartners@stoneandtilepros.simplelists.com

Sent from my iPhone

Visit list archives, subscribe, unsubscribe or change your subscription preferences: http://stoneandtilepros.simplelists.com/sccpartners Start a new conversation (thread): sccpartners@stoneandtilepros.simplelists.com