Materials Guides

Every material calculator on this site starts from one number. Get it wrong and every gallon, box, and kit downstream is wrong too. Measuring, multi-section rooms, and waste allowance explained.

Wall perimeter, not floor area. Cove base is a health-code requirement in food-grade flooring, with its own waste allowance for corners and cuts.

One number does most of the work: the coverage rate off your product’s data sheet. How to read it, and why the answer is always "more than the bare math."

Broadcast to refusal explained, why flake size changes the coverage rate, and how to avoid running short mid-floor.

Base coat, flake, and topcoat in one takeoff, and why the three layers use completely different coverage rates.

Splitting a total flake order across colors by percentage, and why the blend has to add up to exactly 100%.

Base coat, metallic color coat, and top coat sized from one floor measurement, and why the metallic coat is the least predictable of the three.

A gallon covers about 12 ft² at the standard 1/8 inch flood coat, but the seal coat, the edges, and the drips all want their share too.

Smaller tiles mean more joint per square foot, which is why tile size affects grout quantity more than most people expect.