Is there a method or product out there used to resurface or clean existing black boards.
Real slate or just the normal ol’ black (or green) board? There is a paint that I’ve heard of that can make a “blackboard” on any wall.
These are real slate chalkboards. Some school district employees seem to recall a resurfacing/restoring product. I am not aware of any such product.
Maybe contact a local stone fabricator? (I remember when I was in elementary school, we’d wash the boards with water and that always seemed to work; but there’s something grinding in the back of my mind about a light kind of oil that could be used)
You might want to look into this: Effective Slate Cleaner - www.stonetechnologiesinc.com - Stone Soap Ultra is a concentrated cleaner for slate. Free Shipping.
Did you check the warranty? I have always wondered about the “lifetime of the building” warranty on slate chalk boards.
You’d have to speak to God about that, since He makes the slate.
Yeah, but maybe somebody else “makes the slate better”
There is a methodology where the slate is resurfaced in place by grinding. This removes a thin layer of slate that has a sort of glaze on it. I cannot recall how it is done, but the City of Boston used to do this regularly when renovating older schools–it worked great.
Thank you all. Great suggestions. I will post a follow up if they resurface them.
Several years ago I had a similar problem. Someone at Neal Slate was quite helpful.