Resurfacing concrete with RO-150

[Mark]

I'm pulling up an old mastic floor and thinking of just staining the slab under the tile once I get all the mastic up. What abrasive should I use? I think our local Woodcraft sells Granat so that would be my first choice. Other question is can Granat do some light conditioning of a slab? Not looking for a perfect finish as it will be for my home design studio so a burly industrial look is fine with me.

Thanks!

 

[greenMonster]

I'd be interested to see pictures of your project

 

[Alan m]

id be interested too. i think saphire would be better. there is one on the festool spec sheet for doing stone etc

 

[jlyons]

Don't know about festool but i have done densified concrete floors.  you are gunna want diamond pads and a variable speed grinder.  a ras could be awesome but i have never used one so i don't know.  but you could get the diamond pads to go on the ras from most concrete suppliers.

 

[b_m_hart]

I'm not so sure that the RO-150 is the right tool for the job.  Maybe if you can find some dry diamond pads for it, but it's still not going to work as well as a tool that's made for that job.  I know from experience...

 

[Sparktrician]

I used a couple of DeWalt flappy abrasive wheels with my older DeWalt 4.5" grinder to remove some staining on concrete in my garage, and came away wishing I'd used the RAS for its dust pickup capabilities.  That DeWalt combo did a great job, but made a tremendous dust cloud.  I'm glad I didn't use it in my basement. 

[sad]

 

[jlyons]

we used a metabo variable speed grinder with an orange rubber dust shroud worked great.  hooked up to a Ruwac vacuum.  [thumbs up]

 

[BMH]

I used saphire 24-36 grit. Worked like a charm