A gallon of curing compound generally covers between what range of slab surface?

• A. 125-200 sq ft
• B. 50-100 sq ft
• C. 300-400 sq ft
• D. 75-125 sq ft

Answer: (A)

Curing compound is applied as a thin film to seal the concrete and prevent moisture loss during curing. The amount of surface covered per gallon depends on how thick that film is and how porous or rough the slab is, as well as how evenly the product is applied. For a standard application with typical porosity and uniform spreading, a gallon usually covers about 125 to 200 square feet of slab surface. This reflects typical field practice and gives a practical rule of thumb for planning material: more porous or rough surfaces tend to reduce coverage toward the lower end, while smooth, dense surfaces can push toward the higher end. The other ranges are outside what practitioners generally use as the standard one-coat coverage. In practice, you’d estimate gallons needed by dividing the total slab area by this 125–200 sq ft per gallon guideline.