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To scarify, grind, or shot blast
briandeas	04-22-2008 13:20:21
Member Posts: 6 Joined: 03-28-2008	I have just booked a few dozen apartments to overlay and stain. The building is pretty old and the concrete has lots of tack strip holes , paint, mudd, dirt, etc. To save much time from scrubbing all day with black pads and rinsing, wouldn't it be much easier to rough it up with a shot blaster or scarifier? I havent used these machines before but I'm ready to try. I'm putting down an overlay so it doesn't matter what the surface will look like after I use a scarifyer or shot blaster. I just want to prep the surface for overlay wasting least amount of time as possible. Your thoughts?

Lindy A.	04-22-2008 14:26:35
Member Posts: 1776 Joined: --	By all means ... use a floor grinder or shot blast the floor to gain a profile that will promote maximum mechanical and adhesive bonding. But, first clean the floor so that you don't grind or blast foreign matter deeper into the concrete substrate. Lindy A.

briandeas	04-22-2008 14:54:39
Member Posts: 6 Joined: 03-28-2008	Lindy, can you recommend the model of a grinder that you prefer? Also, is the scarifier out of the question here? I totally agree with you, but If you had to choose between a shot blaster or grinder, what would it be? thanks

MC	04-22-2008 17:24:21
Member Posts: 733 Joined: 05-20-2007	Scarifier would be too agressive and create more work for you to create a smooth overlayed floor. shot blasters are great for this but I still prefer a grinder because not only do they grind off everything, they flatten and smooth everything out making it easier to overlay. There are a ton of good grinders out there. If all I was intrested in was light prep for an overlay id buy a single phase grinder like: Lavina 20 or 25 htc 500 prepmaster 2807 terrco (i forget the model) Thats just four but there are a hundred different manufacturers that make good grinders...just be prepared for a big hit to your wallet, but once you buy one youll be happy

suntacsys	04-23-2008 04:34:02
Member Posts: 1135 Joined: --	since its only an o'lay & stain, forget the scarifier as it'd be too aggressive,,, best use swing grinder or dual disk imo,,, both're rentable - if the job stands the cost, i'd buy 1, tho. best [the original] over-equipp'd yic-yac

Lindy A.	04-23-2008 09:25:05
Member Posts: 1776 Joined: --	Don't scarify. If using a floor grinder, suggest a 3 head (less rocking than 2 head) for more even/level profile ...personally I perfer shot blasting since will get within a 1/16" to 1/8" from walls ... but either will work. If you go to http://www.blastrac.com then click on distributors, you can locate a place in your area that rents out their floor grinders and shot blast equipment. Lindy A

hofiveo	05-08-2008 10:35:04
Member Posts: 28 Joined: 03-07-2008	Brian i live here in memphis. I have big equipment for commercial jobs and have about 18 years in epoxy and urethane coatings. I dabble in acid stain, overlays and faux rock construction. give me a hollar sometime. 901-574-2507

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