Garage Floor Coating Cost 2026: $2,500–$6,000 Typical

Coating a two-car garage floor in the US — a professional epoxy system on a sound slab, about a 20×20 through a 20×24, with the diamond grinding that system needs and a topcoat — often clusters around $2,500–$6,000. That is the typical garage floor coating cost for that two-car. The cost to epoxy a 2 car garage of that scope is the size row below. It is the grind, the resin, and the topcoat, not the price of a gallon. Garage floor epoxy cost per square foot, once the garage is about 400 to 500 square feet, is typically $6–$12 for that professional epoxy. Epoxy garage floor cost on a 20×20 is typically $2,400–$4,800. Polyaspartic garage floor cost, on a garage of about 400 to 500 square feet, is typically $8–$14 a square foot. The wider national spread, about $400–$14,000, covers a DIY kit at the low end and a metallic system on a three-car garage with a moisture barrier and stem walls at the high end. A garage door is the opening. A driveway is the slab outside. A concrete patio is a new pour someone walks on. These are typical planning ranges, not a survey and not a quote.

This page is a coating on a residential garage slab that is already there. A bid may call it an epoxy floor, a flake floor, a chip floor, or a polyaspartic floor. It is not a new garage door. It is not a new driveway. It is not a concrete patio, which is a pour, not a coating. A shop floor, a showroom, and a basement slab are a different product. A one-car kit is the floor of the wider spread, not a discounted version of the two-car rows.

The coating in the can is not the job. The bond is the concrete under it. A professional price is the grind that opens that concrete, the fill in a stable crack, the coat, and the topcoat that takes the tires. A kit price is the resin. Price the floor you can measure.

The rows below are ways to read one job. They are not added together. The size table is a professional epoxy in a solid color, at that footprint, and it already includes diamond grinding and ordinary filling of stable cracks on a sound, bare, dry slab. The per-square-foot table is that same kind of floor, by coating, on a garage of about 400 to 500 square feet. A 12×20 costs more per foot than that table. Use an add-on row only when the bid left that line out. A grind the bid already includes is not a second grind. Flakes inside a full-flake price are not a second coating. A polyaspartic topcoat on an epoxy base is one system.

Garage	Area	Typical installed cost
1-car, 12×20	240 sq ft	$2,000–$3,600
2-car, 20×20	400 sq ft	$2,400–$4,800
2-car, 20×24	480 sq ft	$2,900–$5,800
3-car, 30×20	600 sq ft	$3,600–$7,200

Coating	Typical installed cost per sq ft
DIY epoxy kit, materials	$1–$3
Professional epoxy	$6–$12
Full flake / chip	$7–$13
Polyaspartic	$8–$14
Metallic	$10–$16

Add-on	Typical planning range
Crack repair, when the bid leaves it out	$200–$800
Grinding / prep, when the bid leaves it out	$400–$1,500
Moisture barrier	$500–$2,200
Cove base	$400–$1,200
Stem walls	$500–$2,200

The coating rates apply once the garage is about 400 to 500 square feet. They are the whole installed floor of that coating, except the DIY row, which is materials. Do not add them on top of the size table. The size table is the professional epoxy column. A full flake, a polyaspartic system, and a metallic floor are substitutes for that column.

A 12×20 one-car is typically $2,000–$3,600. That is 240 square feet. Two hundred forty times $6 is $1,440, under the row, because the crew and the grind do not shrink to the two-car rate. Two hundred forty times $8 is $1,920, just under the floor. Two hundred forty times $12 is $2,880, inside the row. Two hundred forty times $15 is $3,600, the top. The row is about $8–$15 a square foot. From $2,000–$2,500 the job sits under the typical band and inside the wider spread. From $2,500–$3,600 the dollars overlap the typical band, and the garage is still a one-car. The typical band is a two-car. Adding the $6–$12 row on top of this one double-counts the floor.

A 20×20 is typically $2,400–$4,800. That is the cost to epoxy a 2 car garage when the floor is 20 by 20 and the system is professional epoxy, and it is 400 square feet. Four hundred times $6 is $2,400, the floor of the row and $100 under the typical floor of $2,500. Four hundred times $6.25 is $2,500, the typical floor. Four hundred times $12 is $4,800, inside the row and inside the typical band. The overlap with the typical band is $2,500–$4,800. The $2,400 floor of the size row stays inside the wider spread. This is the rate the per-square-foot table is for. A one-car rate, and a driveway rate, are the wrong tools. The driveway guide discusses plain concrete around $8–$15 a square foot for a new slab of about 600 square feet. Four hundred times $8 is $3,200, which can land inside this row and still be a different job. That page is a new driveway. This page is a coating. Use the size row for the total.

A 20×24 is typically $2,900–$5,800. That is 480 square feet, and it is the two-car that sits fully inside $2,500–$6,000. Four hundred eighty times $6 is $2,880, just under the floor. Four hundred eighty times $12 is $5,760, just under the $5,800 top. Four hundred eighty times $12.50 is $6,000, the typical top, a little above the $12 rate and still the top of the band. The whole size row sits inside the typical band. A 20×22 is 440 square feet and sits between the 20×20 and the 20×24. Four hundred forty times $6 is $2,640. Four hundred forty times $12 is $5,280. Both ends sit inside the typical band. It is not an average of the two rows. Measure the floor. Do not add the 20×20 row to this one.

A 30×20 three-car is typically $3,600–$7,200. That is a smaller three-car, 30 feet wide by 20 feet deep, and it is 600 square feet. Six hundred times $6 is $3,600, the floor. Six hundred times $10 is $6,000, the typical top, inside the row. Six hundred times $12 is $7,200, the top. The overlap with the typical band is $3,600–$6,000. From $6,000–$7,200 the job has left the typical band and stays inside the wider spread. A three-car that is deeper than 20 feet, or wider than 30, is more than 600 square feet and moves up from this row. Nothing in this row is a 20×20 someone stretched. A moisture barrier and stem walls are still extra. Do not add the 20×24 row to this one.

DIY epoxy kit materials, on a garage of about 400 to 500 square feet, are typically $1–$3 a square foot. That row is the kit, the extra resin, and the flakes in the box. It is not the grind, and it is not a crew. A 20×20 kit is typically $400–$1,200. Four hundred times $1 is $400. Four hundred times $3 is $1,200. A 20×24 kit is typically $480–$1,440. Four hundred eighty times $1 is $480. Four hundred eighty times $3 is $1,440. A 12×20 kit is typically $400–$720. Two hundred forty times $1 is $240, under that floor, because the kit does not shrink to a dollar a foot. Two hundred forty times $3 is $720, the top. The whole DIY reading sits under the typical band and inside the wider spread. Do not add a professional size row on top of a kit. A kit and a hired floor are two ways to buy one surface.

Professional epoxy is typically $6–$12 a square foot on a garage of about 400 to 500 square feet. That is the first hired coating row, and it is the same reading as the 20×20 and the 20×24. It includes the grind on a bare, sound slab, a solid-color epoxy, and a topcoat. A light scatter of flakes, when the bid includes it in that epoxy price, is still this row. It does not include a full broadcast, a polyaspartic system, or a metallic pigment. The low end is open access in a lower-cost area. The high end is a longer finish or a garage the crew has to work around. A 12×20 at about $8–$15 sits above it. Use the size table for that one-car.

Full flake, or a full chip broadcast, is typically $7–$13 a square foot on a garage of about 400 to 500 square feet. The flakes cover the floor. That is the whole flake system, not a solid epoxy plus a bag of chips, and not the size row with a second finish. On a 20×20, 400 times $7 is $2,800, and 400 times $13 is $5,200. That product sits inside the typical band. On a 20×24, 480 times $7 is $3,360, and 480 times $13 is $6,240. The floor sits inside the typical band. The top has left it by $240 and stays inside the wider spread. On a 30×20, 600 times $7 is $4,200, and 600 times $13 is $7,800. The flake floor is $1 over the epoxy floor. The flake top is $1 over the epoxy top. On the same garage, a full flake is about $1 a square foot over solid epoxy at each end of the rate. Four hundred times $1 is $400. Ask which floor the bid is. A solid color and a full flake can land on the same dollars when the yards differ. That overlap is why the broadcast has to be named.

Polyaspartic is typically $8–$14 a square foot on a garage of about 400 to 500 square feet. Polyaspartic garage floor cost is that whole system. Color and a flake broadcast that the bid includes in the polyaspartic price are in the rate. Do not add the professional epoxy size row under it, and do not add the flake row on top of it. On a 20×20, 400 times $8 is $3,200, and 400 times $14 is $5,600. That product sits inside $2,500–$6,000. On a 20×24, 480 times $8 is $3,840, and 480 times $14 is $6,720. The floor sits inside the typical band. The top has left it and stays inside the wider spread. On a 30×20, 600 times $8 is $4,800, and 600 times $14 is $8,400. The $8 rate is how a garage of about 400 to 500 square feet starts. It is not a one-car rate. Two hundred forty times $8 is $1,920, under a real one-car polyaspartic, because the crew does not shrink to 240 square feet. A one-car polyaspartic is typically $2,400–$4,200, about $10–$17.50 a square foot. Two hundred forty times $10 is $2,400. Two hundred forty times $17.50 is $4,200.

Metallic is typically $10–$16 a square foot on a garage of about 400 to 500 square feet. The pigment and the labor to move it are the finish. It is its own system. It is not epoxy plus a tint, and it is not a flake floor. On a 20×20, 400 times $10 is $4,000, and 400 times $16 is $6,400. The floor sits inside the typical band. The top has left it by $400. On a 20×24, 480 times $10 is $4,800, and 480 times $16 is $7,680. On a 30×20, 600 times $10 is $6,000, the typical top, and 600 times $16 is $9,600. A metallic three-car starts where the typical band ends. Do not add the size row under a metallic price.

Crack repair, when the bid leaves it out, is typically $200–$800. The size rows include ordinary filling of stable cracks and joints on a sound slab. Add this row when the bid has no crack fill, or when the cracking is more than that ordinary prep. The floor is a few stable cracks on a one-car or a quiet two-car. The top is joints and cracks across a three-car, or a wide crack at the garage door. A hairline the coating already fills is not this row. A crack that has one side higher than the other, or a slab that is heaving, is not filler. Do not add the row to a bid that already says the cracks are included.

Grinding and prep, when the bid leaves it out, is typically $400–$1,500. The professional size rows include a diamond grind on a bare, sound slab. Add this row when the price is coating only, when you are renting a grinder for a kit, or when an old coating has to come off. On a garage of about 400 to 600 square feet, that left-out grind is often about $1.50–$2.50 a square foot. Four hundred times $1.50 is $600. Four hundred eighty times $2 is $960. Six hundred times $2.50 is $1,500, the top. A one-car rental sits at the $400 floor, because the machine does not shrink to 240 square feet. Grinding a thick old coating off can sit at the top and can leave it. A grind the hired epoxy already includes is not a second grind. Adding this row on top of a size row double-counts the prep.

A moisture barrier is typically $500–$2,200. The size rows and the coating rates assume a dry slab. This row is the primer, or the vapor treatment, when a moisture check says the slab is damp. On a 20×20, 400 times $1.25 is $500, the floor. On a 20×24, 480 times $2 is $960, inside the row. On a 30×20, 600 times $2 is $1,200, and 600 times $3 is $1,800, still inside the row. The $2,200 top is a heavier barrier on that three-car, or a two-car slab that needs more than the $2 rate. A coating on a damp slab can blister. The barrier is the line that names that risk. Do not add it to a bid that already includes it, and do not add it to a slab the installer has called dry.

A cove base is typically $400–$1,200. The size rows stop at the floor. A cove turns the coating up the wall a few inches so water and dirt have a place to stop. The floor of the row is a two-car. A 20×20 has 80 feet of wall, and a 16-foot door leaves about 64 feet. Sixty-four times $6 is $384, about the $400 floor. Sixty-four times $15 is $960, inside the row. The top is a three-car or a taller cove. A 30×20 has 100 feet of wall, and a 16-foot door leaves about 84 feet. Eighty-four times $14 is $1,176, about the $1,200 top. Add the row when the bid left the cove out. A bid that already says cove base does not get this row on top.

Stem walls are typically $500–$2,200. A stem wall is the lower wall, often about the bottom 2 feet, coated with the floor. It is more area than a cove. On a 20×24, about 72 feet of wall after the door, times 2 feet, is 144 square feet of wall. One hundred forty-four times $8 is $1,152. One hundred forty-four times $12 is $1,728. Both sit inside the row. On a 30×20, about 84 feet after the door, times 2 feet, is 168 square feet. One hundred sixty-eight times $13 is $2,184, about the $2,200 top. The $500 floor is a short run, not the whole three-car. A cove and a stem wall are two ways to turn the coating up the same wall. Price one of them. Cove plus stem on that wall prices the edge twice.

Epoxy vs polyaspartic

Epoxy and polyaspartic are two resins, and a bid often uses both in one floor. Epoxy is the slower system. It builds a thicker coat, and it bonds to concrete that has been ground. You can often walk on a professional epoxy the next day. A car is often planned at about 3 to 7 days, and a full cure is longer than that. The label, and the installer's instruction, are the clock that counts. A standard epoxy can amber where the sun hits it through an open garage door. It is rigid. Where the slab cracks, the coating cracks with it.

Polyaspartic is the faster system, and it is typically the higher rate, $8–$14 against $6–$12. You can often walk on it in a few hours. A car is often planned at about a day, and some systems are the same day. That return is why the rate is higher. It is not a second line on top of the polyaspartic price. Polyaspartic is more stable in sun, and it is more flexible than a rigid epoxy. The working time is short. A hot garage shortens it again. The installer, not a first kit, is who that working time is for.

A common professional floor is an epoxy base with a polyaspartic topcoat. The epoxy builds the coat. The polyaspartic takes the sun, the tires, and the faster cure. If the bid prices that floor as polyaspartic, use the polyaspartic rate. If the bid prices it as an epoxy with a named topcoat and the total still reads as $6–$12, use the epoxy rate. Do not add the two rates. A full polyaspartic floor, base and top in the same resin, is also the $8–$14 rate. A flake broadcast inside either price stays in that price.

Hot-tire pickup is a warm tire lifting a coating that is soft, thin, or not yet cured. It shows up on a DIY kit, on a floor with no real topcoat, and on a car parked the day the floor was rolled. A professional epoxy that has cured, or a polyaspartic topcoat, is how that risk is priced. Parking a hot car on a fresh floor is how the risk shows up anyway. Hot-tire pickup is not its own add-on. A floor that has already lifted is a grind and a new coating, which is the grinding row plus the coating you are actually buying.

Choose the epoxy rate when the floor is out of the sun, the cars can stay out for several days, and $6–$12 is the system you are comparing. Choose the polyaspartic rate when the cars have to come back the next day, the door faces the sun, or a kit has already picked up under hot tires. A full flake can sit on either resin. The flake rate is the broadcast. Ask which resin is under it before you treat two flake bids as the same floor.

What the range includes

The typical band assumes an existing single-family garage and a professional epoxy on a two-car floor the crew can grind. It includes a 20×20 from $2,500 up, or a 20×24. The slab is sound, bare, and dry. The price includes diamond grinding, ordinary filling of stable cracks, a solid-color epoxy, and a topcoat. An open 20×20 at about $6.25 a square foot sits toward $2,500. Four hundred times $6.25 is $2,500. A 20×24 at the high end of the $6–$12 rate sits toward $5,800, and $12.50 a square foot on that floor is the $6,000 top. Four hundred eighty times $12.50 is $6,000.

Prep is the part of the band people leave out of a kit price. Diamond grinding opens the concrete so the coating has a profile to hold. A broom, a degreaser alone, and an acid etch are not that grind. Oil has to come up. Paint, a sealer, and an old coating have to come off, and grinding an old coating off is the add-on row when the size row assumed a bare slab. Dust has to be vacuumed. A coating over dust peels. Stable cracks and control joints get filled so the coating is not bridging a gap. A crack that is moving, or a slab that has heaved at the door, is not a coating. New concrete is often planned around 28 days before a coating, the same cure the patio guide uses before anyone treats a pour as finished. The product label is the instruction that counts. This page is not a cure schedule.

A moisture check is part of a professional prep even when the barrier is a separate row. A slab that reads damp gets the moisture-barrier line, $500–$2,200, or it does not get the coating. A plastic sheet taped to the floor overnight, or a meter the installer uses, is the kind of check the bid should name. This page does not turn that check into a pass-fail number. The installer's reading is the one that counts.

Cure time is part of the coating, and it is not a separate dollar row. A professional epoxy is often planned as foot traffic the next day and vehicles in about 3 to 7 days. A polyaspartic is often planned as foot traffic in a few hours and vehicles in about a day. A DIY kit is often longer than the picture on the box, and a car the next morning is how hot-tire pickup starts. Cold slows the cure. Heat speeds it and shortens the time the installer has to work. The label is the clock. These are typical planning spans, not a warranty.

How long the work takes depends on the floor, the old coating, and the weather, and the bid's schedule is the one that counts. A straightforward two-car the crew can grind is often one day to grind and coat, plus the cure before a car returns. A polyaspartic return is often that next day. A three-car, a moisture barrier, or an old coating to grind off is often longer.

Durability is the topcoat plus the prep. The topcoat takes the tires, the salt, the oil, and the abrasion. Flakes hide wear. A solid color shows every scratch. The coating cracks where the concrete cracks. A coating does not stop the slab from moving, and it does not fix a driveway that has risen into the opening. A professional epoxy is often planned around 10 to 20 years. A polyaspartic system is often planned around 15 to 20 years. A DIY kit is often planned around 2 to 5 years, and shorter when the slab was not ground. That is a planning life, not a warranty. A coating on a dusty or damp slab can fail in a season. That failure is not the 10-year plan.

The floor of the wider spread, near $400, is a DIY kit. Four hundred times $1 is $400, the floor of a 20×20 kit. It is also where a one-car kit sits when the box does not shrink to $240. It is not a professional coating someone discounted. The top, $14,000, is a metallic system on the 600-square-foot three-car, plus a moisture barrier and stem walls. Six hundred times $16 is $9,600. A moisture barrier at $2,200 and stem walls at $2,200 is $4,400. Nine thousand six hundred plus $4,400 is $14,000. A deeper three-car, a cove on top of those lines, or a grind that was also left out can clear that top. A driveway replacement clears it. A new garage slab, which this page does not price, can clear it too.

Living at home during the work is the usual plan. The cars have to live somewhere else until the cure the installer named. The garage is a work zone for the grind, which is dusty, and for the coating, which wants to be left alone. That stay is not in the coating bid.

Warranties are part of the contract, and this page is not a reading of one company's form. A coating warranty commonly covers the workmanship on that floor, and the term on labor is often shorter than any term on the material. A peel from a damp slab the bid did not treat, a car parked early, a crack the concrete was already going to make, and a slab you patched later are the kind of thing those forms commonly leave out. Read the form. The warranty is not a dollar line in the planning range.

Homeowners insurance and a home warranty are contracts too. A standard homeowners policy is built around sudden and accidental damage. A coating you chose, a kit that peeled, and a surface that wore out are the kind of loss those policies commonly exclude or treat as maintenance. A home warranty may name a floor and still exclude a pre-existing slab or any amount over a low dollar limit. Read the form before you treat either one as the budget. Neither one is inside the planning range.

None of the bands include a new garage door, a new driveway, or a concrete patio. The coating stops at the garage slab. A door that does not seal, a slab that has risen into the opening, and a patio in the yard are those other guides. Do not fold the door into the epoxy price, and do not fold a driveway apron into the 20×24 row.

As a cross-check, not a bid: a 20×20 professional epoxy is $2,400–$4,800, and the part from $2,500 up sits in the typical band. A 20×24 at $6–$12 a square foot is $2,880–$5,760, inside $2,500–$6,000. A metallic 30×20 at $16 a square foot is $9,600, and that plus a moisture barrier at $2,200 and stem walls at $2,200 is $14,000, the top of the wider spread. If a bid and that reading are far apart, the bid is a kit, a flake, a polyaspartic, a metallic, a moisture barrier, or a slab the reading left out.

What moves the price

Driver	How it changes the bid
Size	A 12×20 is $2,000–$3,600. A 20×20 is $2,400–$4,800. A 20×24 is $2,900–$5,800. A 30×20 three-car is $3,600–$7,200. The two-car professional epoxy is the typical band.
Coating	A DIY kit is $1–$3 a square foot in materials. Professional epoxy is $6–$12. Full flake is $7–$13. Polyaspartic is $8–$14. Metallic is $10–$16. Those rates are a garage of about 400 to 500 square feet.
Prep	Ordinary grinding and stable crack fill are in the professional size rows. Left out, grinding is $400–$1,500 and crack repair is $200–$800. An old coating that has to come off sits at the top of the grind and can leave it.
Moisture, cove, walls	A moisture barrier is $500–$2,200. A cove base is $400–$1,200. Stem walls are $500–$2,200. A cove and a stem wall on the same wall price that edge twice.
Return to service	Epoxy often keeps the cars out for several days. Polyaspartic is often about a day. The faster return is part of why that rate is higher. It is not a second line on top of the polyaspartic rate.
Slab and access	A sound, dry, bare slab is the size row. Oil soaked in, a damp slab, a broken slab, or a floor the grinder has to be walked to sits toward the top and can leave the row.

The footprint is the first cut, and it is not a rate times a hope. Measure the floor. A 12×20 has a little over half the area of a 20×20, and it is not half the price, because the crew and the grind do not shrink in half. A 30×20 leaves the typical band once the professional epoxy rate is much above $10 a foot. Six hundred times $10 is $6,000.

The coating is the second cut, and it is a substitute, not a stack. A kit, a professional epoxy, a full flake, a polyaspartic system, and a metallic floor are five ways to price one surface. The flake rate already holds the broadcast. The polyaspartic rate already holds the topcoat that makes it polyaspartic. Adding epoxy, then flake, then polyaspartic, then a moisture barrier that the bid already named, is how a 20×24 becomes a number nobody can compare.

The slab is the quiet driver. A bare, dry, sound floor is the job the size rows describe. Oil that has soaked in, a sealer, or a failed kit that has to be ground off is more labor, and it can leave the row. The same 20×24 in a lower-cost area and in a high-labor city can sit at opposite ends of $2,900–$5,800 without either bid being wrong. Ask how the dust leaves the garage, and ask what the moisture check said.

A garage door that is being replaced in the same season, a driveway that meets the slab, and a patio that is a separate pour are the projects that show up beside this one. Price them on their own pages. Two bids that disagree about whether the grind, the flakes, and the moisture barrier are included are not the same floor.

DIY or hire

Rolling a kit is ordinary DIY on a slab that is already clean, dry, and sound, when you follow the label's temperature and moisture limits and you stay off the floor until it has cured. The kit is the $1–$3 row. Filling a hairline that is not growing, and that does not have one side higher than the other, is ordinary DIY before that kit. A crack that has opened into a web is past filler.

Diamond grinding is a hire for almost every floor that needs this coating to last. The dust, the profile, and the risk of gouging the slab are the job. A rental on a one-car can be the $400 floor of the grinding row when you have used the machine before and the slab is bare. An old coating, a wet slab, and a grinder you have not used are a hire.

Hire the professional epoxy, the flake system, the polyaspartic, and the metallic floor. The working time of the resin is not a weekend skill, and a polyaspartic gives you less of it. Hire the moisture check and the barrier. Hire the cove or the stem walls. Hire a floor with oil soaked in. Hire any slab that is damp, broken into pieces, or heaving at the door. A car that has to park the next day is a reason to hire the polyaspartic system, not a reason to rush a kit.

An owner can still keep the scope tidy: where the coating stops, whether the cove is in, and which day the cars come back. That conversation is not a reason to grind the floor yourself the morning the resin arrives.

Repair or replace

How long does an epoxy garage floor last? A professional epoxy, with the grind done and the topcoat maintained, is often planned around 10 to 20 years. That span is a planning life, not a warranty. A polyaspartic system is often planned around 15 to 20 years. The two professional spans overlap. People choose polyaspartic for the cure, the sun, and hot tires, not because a calendar promised extra years. A DIY kit is often planned around 2 to 5 years, and a kit on a slab that was only etched can fail sooner. Bare concrete has its own life on the driveway and patio pages. This page is the coating.

Whether an epoxy garage floor is worth it is that planning life against the check. The $2,500–$6,000 band is worth pricing when the slab is sound, you will use the garage, and oil, salt, and tires are the problem you are solving. A kit at $400–$1,440 on a two-car is the smaller check, and it is the one that often gets ground off later. A professional floor is the wrong purchase when you are about to sell and nobody asked for it, or when the slab is the project. A coating is not a new door, a new driveway, or a new patio.

Recoat the topcoat when the color is intact, the bond is sound, and the wear is in the clear coat. That maintenance is not a new size row. Ask whether the bid is a topcoat or a full system. A topcoat on a floor that is peeling is still a floor that has to come off.

Grind and recoat when the coating is peeling, when hot-tire pickup has lifted it, or when a kit has worn through to concrete. Do not coat over a failed coating. The old film is the grind row, $400–$1,500 when the new price left it out, plus the coating you are buying. A second kit on a floor that already picked up is how the peel comes back.

Leave the floor uncoated when the slab is broken into pieces, sections rock, or one side has heaved so the garage door no longer meets it. A new coating does not fix a base that has failed, and it does not fix a driveway that has risen into the opening. That high spot is the driveway page. A damp slab gets a moisture barrier in the same job or it waits. Coating it anyway is how the new floor blisters.

Do the work on your schedule when you can. A floor that is only ugly, and still bonded, can wait for a season when the cars have somewhere to go. A floor that is peeling into the house, or a slab that pitches water at the wall, is the same coating plus the repair the concrete actually needs. Fix that in the same job.

How to use this number

Ask for a written price that names the square feet, the system, whether the grind and stable crack fill are included, whether a moisture barrier, a cove, and stem walls are included, and when a car can return. Compare a 12×20 with $2,000–$3,600, a 20×20 with $2,400–$4,800, a 20×24 with $2,900–$5,800, and a 30×20 with $3,600–$7,200. Compare the larger-garage rates with $6–$12 for professional epoxy, $7–$13 for a full flake, $8–$14 for polyaspartic, and $10–$16 for metallic. Compare a DIY kit with $1–$3 a square foot in materials. Keep the grind and the ordinary crack fill inside the professional size row. Put a left-out grind, extra crack repair, a moisture barrier, a cove, and stem walls on their own lines.

The cost to epoxy a 2 car garage is that size row when the finish is professional epoxy and the add-ons are out. A very low bid on a 20×24 is a reason to ask whether the grind and the topcoat are included, not a reason to celebrate. A quote near $400 should say a kit, not a professional floor. A high bid should point at the flake, the polyaspartic, the metallic, the moisture barrier, the stem walls, or a three-car. Two or three local bids on the same floor, the same resin, and the same prep are the number that matters. How this site sets the band is explained on the methodology page.