The biggest grinders I can find around here are dual head edco 1.5hp 110v for $180/day or if I drive 5 hours away, a lavina L30GEB (propane 30” planetary 19hp 800lbs) for $500/day and $350 for the diamonds. The Lavina technical rep said it’d take 4hrs for 3000sq ft. I was told the edco would take days. Does this sound right to anybody? I’m thinking the lavina is my only choice if I decide to do a full-flake epoxy topped with polyaspartic floor. The one grinding quote I got was $3 a sq.ft. It seems $9000 is a lot of money for that.
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Grinder choice for 3000 sq.ft.
- Thread starter fireblue
- Start date
juddspaintballs
Well-known member
I helped with grinding 6,000 sq ft with the Edco. It took a solid week.
For 3,000sf absolutely go with the biggest Lavina you can afford (with compatible dust extraction). SunBelt Rentals can set you up. The propane unit is a solid choice especially if there's any concern with power availability. 4 hrs sounds a bit optimistic but whatever it takes will be minimum 4x what you'd get out of a Edco twin head with much better overall finish plus, it won't beat the **** out of you at the end of the day. Edging will be your biggest challenge, rent two quality shrouded angle grinders, again, with dust extraction, and invest in good knee pads!
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juddspaintballs
Well-known member
An automotive creeper helps a lot for edging.
Yeah, I guess a lot depends on your condition. I've got a bum knee so some things work better for me than others. I've seen some pretty elaborate, function specific set-ups that make edge grinding downright easy but they're spendy and of limited use outside of floor work. Even laying across a simple wheeled low stool can really boost the comfort level / productivity if you're working with bad knees.An automotive creeper helps a lot for edging.
dcg9381
Well-known member
Grinding 1500 sqft kicked my ***. Seriously. Apparently it's necessary for epoxy on new concrete, but does not appear to be necessary for polyurea (which seems to close faster-drying cousin of polysporatic). (I defer to vendors prep advice for their products)
I no longer do floors in epoxy. It seems your after a fixed color floor, full flake, the top coated with polysporatic. Why not skip the epoxy (which is a lot more expensive and requires more prep) - simply do a solid color polyurea, flake, then top coat it with polyurea?
I no longer do floors in epoxy. It seems your after a fixed color floor, full flake, the top coated with polysporatic. Why not skip the epoxy (which is a lot more expensive and requires more prep) - simply do a solid color polyurea, flake, then top coat it with polyurea?
pcmeiners
Well-known member
"I got was $3 a sq.ft. It seems $9000 is a lot of money for that."
Wow, at $9000 I picked the wrong business to go into.
Wow, at $9000 I picked the wrong business to go into.
LegacyIndustrial
ALLIANCE MEMBER
Buy the diamonds on ebay.
Lavina & Edco use the same units.
Get the biggest unit you can afford, it will minimize your brain damage.
Lavina & Edco use the same units.
Get the biggest unit you can afford, it will minimize your brain damage.