Concrete Curing Compound Coverage
Gallons of liquid membrane-forming curing compound (ASTM C309) for a slab: gallons = ceil(area x coats / coverage x (1 + waste)), coverage about 200 sf/gal but the product label governs. A 2,500 sf slab at one coat and 200 sf/gal takes 13 gal (3 five-gallon pails); a 3,200 sf slab at two coats with 10% overspray takes 36 gal. A rough broom or tined finish, vertical faces, and a second coat all cut the coverage. Apply right after the surface sheen leaves so the membrane seals in the mix water; a dissipating-resin (Type 1-D) or white-pigmented heat-reflecting (Type 2) is chosen per the job. A material-ordering estimate; the product data sheet and the spec govern the rate and type.
Formula and source
gallons_exact = slab_area_sf x coats / coverage_sf_per_gal x (100 + waste_pct)/100; gallons_needed = ceil(gallons_exact); pails_5gal = ceil(gallons_needed / 5).
ASTM C309 (Liquid Membrane-Forming Compounds for Curing Concrete) by name; the coverage rate and compound type come from the product data sheet and the spec.
Audience
This tile is built for trades and the adjacent professions in the Carpentry and Construction group. The interactive calculator runs entirely in your browser. No account, no fee, no advertising, no tracking.
Related tools
Posture
Rough Logic answers the math question the working professional asks on the job. The site is a calm, fast, ad-free, account-free, ever-free reference. It does not interpret code. It does not replace the licensed professional. It does not store your inputs. The Authority Having Jurisdiction governs all installations and inspections.