Which Diamond Grinding Head?
Excessive wear doesn’t mean a poor quality disk; just the wrong disk for the concrete.
Diamond Disk Range
Aggressive Grinding – Black 16 Grit
For aggressive grinding and removal of more concrete.
(Note: This disk wears quickly and excess wear charges WILL apply – it’s the nature of the disk.)
Note: if you’re hoping to remove lots of concrete, our grinders are not the right machines. They’re “surface grinders” that will smooth concrete and remove small lips and and high points from concrete – but they aren’t aggressive concrete removal tools.
General Purpose – white 30 grit
Suits 95% of our customer’s jobs.
Leaves light swirl marks but very effective for:
* removing lips in foot paths
* the first grind to expose aggregate for polished concrete
* removing one or two layers of paint (see “Paint Removal Disk” for more info)
* other semi-aggressive grinding.
NOTE: NOT for new/green concrete. Blue Disk for Green/New concrete.
New Concrete – Blue 30 grit
Use for NEW concrete as standard diamond disks will be destroyed by new concrete.
New concrete can be anything up to 3 months old… (or even older).
* Cleaning up new rain damaged slabs
Fine Grinding – yellow 150 grit
Use to smooth out the scratches from heavier grade diamond head.
* Minimal grinding ability – kind of like a very fine sandpaper, it’s only used for smoothing out previous grinds.
Choosing the correct disk is important – but not difficult
Choosing the correct Diamond Disk will give you a better job – and reduce the risk or excess diamond use charges.
Excessive wear doesn’t mean a poor quality disk; just the wrong disk for the concrete.
If a white disk is wearing too quickly on “old” concrete – the concrete may be “soft” and require a disk for New/Soft concrete = Blue Disk.
“Green Concrete” – ie “new concrete” less than 3 months old – will destroy a standard Diamond Disk and incur a fee up to $440.00.
Jobs our grinders aren’t designed ?
Our grinders are not the right machines.
They’re “surface grinders” that will smooth concrete and remove lips and and high points from concrete – but they aren’t aggressive concrete removal tools.
For jobs beyond what a surface grinder will do, use a Concrete Planer.
Grinding “Exposed Aggregate”?
Exposed aggregate sitting above the concrete?
Sorry – we’re unable to help. Our diamond heads might work – but probably not and you’ll just damage the head and we’ll need to charge for the damaged diamond.
Please note excess diamond use charges on product pages.