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The cost to replace a driveway coating ranges from $275 to $850, or $550 on average. Naturally, larger driveways cost more than smaller driveways. The type of driveway sealant and the number of coats also impact the cost. Coal tar sealant costs the least, while latex acrylic sealant costs the most. Oil-based sealants fall in the middle. 

It costs between $600 and $8,400 to stain an average-size concrete patio of around 300 square feet. The wide price range accounts for intricate stains that incorporate multiple colors and stenciling, high-end sealers, and special touches, such as stamping or concrete polishing. Prices can also vary if you need to make multiple repairs to your patio before adding the stain and seal.

Concrete can take years to fully settle, but interior concrete floors are mostly settled after a year. Shifting and settling can occur throughout your home’s life, but most major settling happens the first few years after the concrete is poured. It’s not uncommon for minor cracks to appear in concrete floors over time—check with a concrete pro to ensure new cracks don’t indicate a structural issue in your home.

The amount of paint needed to cover a two-car garage floor depends on the surface area and the product's coverage rate. On average, a standard two-car garage floor measures 400 to 500 square feet. Coverage ranges from 100 to 200 square feet per gallon for epoxy paint, depending on the product and application method. After some quick math, you may need 2 to 5 gallons of epoxy paint with two coats to cover a two-car garage floor.