Epoxy Loss Allowance

[rwwoods]

Obviously, some epoxy will remain on the bucket and tools and some may be accidentally dropped where it should not be. What is a reasonable percentage loss allowance? Does the loss allowance vary depending upon the percentage of epoxy solids in the coating?

 

[shaun oriold1]

So, I'm a tad confused. Are you thinking of buying a kit which covers 200 square feet, and your garage is 199 square feet? Or something similar....

Unless you're totally sloppy, you wont lose more than a few drops accidentally. You're likely to lose more on what remains in the bucket(s) on the mixing paddle, what gets sucked up into the roller / brushes / squeegee

I would guess on a 400 Sq foot floor, I probably lose approx 20oz or so of base coat, and approx 40oz of top coat - I'm using 9" rollers for base, and 18" for top coat. I'll also waste a bit when I mix a small batch for side walls. I always want to mix extra, and then I toss it out afterwards, before I coat the floor ( I try to wait 30 min after coating side walls and re-flaking before coating the floor, so I cant use it)

I'm not sure what that will tell you though. I'll just say, if you're thinking of trying to save money and buying an exact quantity, then you're going to be short.


S.

 

[benwah]

Does the loss allowance vary depending upon the percentage of epoxy solids in the coating?

Shaun nailed it with loss pertaining to rollers and buckets.

If you're talking about mil thickness and solids %, it's real easy. If you are applying a 67% solids epoxy, you will lose 33% (solvents) of your thickness while it cures. If using 100% solids, you will lose 0%.

If you'd like to figure out how much you need to apply, just use this simple formula. Dry Film Thickness divided by percent of volume solids.

DFT / % volume solids

Say you need to achieve 8 dry mils with your 67% solids epoxy. 8 / .67 equals 11.94, so 12.

Apply it at 12 mils wet and you will meet your standard.

 

[LegacyIndustrial]

Brother, the best thing i can see after a job is some material in the bucket. Never want to be short or comprimise thickness.

Running lean is not worth the stress.


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