Solve backwards
How big a slab will my curing compound cover?
- 5 galThe example worked below
- Concrete Curing Compound Coverage CalculatorEvery figure is its own
You have
How much curing compound?
That is 5 gal(18.9 L). Worked by the Concrete Curing Compound Coverage Calculator at the settings below.
The settings it uses
- Coverage Rate
- 200 ft²/gal
What it will do
1,000 sq ft of slab
92.9 m²
One slab. Enough for a slab about 32 × 32 ft.
Or several. Less than one slab of the size the Concrete Curing Compound Coverage Calculator opens on (a slab about 46 × 46 ft).
Check it forwards
- Slab Surface Area
- 1,000 sq ft
- It asks for
- 5 gal
- You have
- 5 gal
The Concrete Curing Compound Coverage Calculator asks for 5 gal at that size.
If you had more, or less
Around your amount
Each worked by the Concrete Curing Compound Coverage Calculator at the same settings.
Half
2.5 gal
500 sq ft
a slab about 22.4 × 22.4 ft
Yours
5 gal
1,000 sq ft
a slab about 32 × 32 ft
Half as much again
7.5 gal
1,500 sq ft
a slab about 39 × 39 ft
Double
10 gal
2,000 sq ft
a slab about 45 × 45 ft
Common amounts
What each amount of curing compound covers
The sizes it is usually sold in, each worked by the Concrete Curing Compound Coverage Calculator at the settings above.
| You have | It covers | As one slab | Average slabs |
|---|---|---|---|
| 1 gal(3.8 L) | 200 sq ft(18.6 m²) | a slab about 14.1 × 14.1 ft | under 1 |
| 5 gal(18.9 L) | 1,000 sq ft(92.9 m²) | a slab about 32 × 32 ft | under 1 |
| 55 gal(208.2 L) | 11,000 sq ft(1,022 m²) | a slab about 105 × 105 ft | 5 |
Five square metres to the litre, as a start
The calculator opens at 5 m² per litre, about 200 square feet per US gallon, a commonly cited rate — and takes the product's data sheet figure in its place, because formulations and spraying against rolling differ. A specification may also cap the rate below what the product can physically achieve.
A broomed slab takes more than its footprint
Plan area is not wetted area. A broomed, tined or exposed-aggregate finish presents more surface than its footprint and takes more compound than a smooth trowelled slab at the same rated coverage, and formed edges, curbs and slab returns are outside the figure entirely.
One application, and nothing lost in the sprayer
The figure is the theoretical volume for one application: no overspray past the edge, no wind drift, nothing left in the sprayer and hose. Where the specification calls for two coats or a second pass at right angles, the slab this reaches halves. And some compounds interfere with coatings or adhesives laid later.
How the answer is worked
Nothing here is a second formula. The Concrete Curing Compound Coverage Calculator runs forwards — a size in, a quantity out — and this page grows its own starting slab in proportion until the quantity it asks for is what you have. Where it rounds up to whole containers, the answer is the largest size before the next one would be needed.
Where the calculator adds an allowance for cuts or breakage when you order, the same allowance comes off here, because it is the same calculator: a stack you already own finishes less than its face value. Where it adds none, neither does this page — the settings beside the answer say which.
Concrete Curing Compound Coverage Calculator
runs it forwardsEstimate the liquid membrane-forming curing compound a concrete slab surface needs, in gallons or litres.
Work out what to buy insteadSolve backwards
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Solve backwards
Start from what is already in the yard
Paint, sheets, rolls, bags and pieces, each read the other way by the calculator that orders it.
The calculator's own figures
Nothing is estimated twice: the page runs the same calculator you would order with.
The largest size that fits
Where a calculator rounds up to whole containers, the answer stops before the next one.
Both unit systems
Gallons and litres, square feet and square metres, side by side.
Frequently asked questions
- How much slab does 5 gal of curing compound cover?
- At the Concrete Curing Compound Coverage Calculator's own settings, 1,000 sq ft (92.9 m²) — a slab about 32 × 32 ft. Every figure follows the settings, which you can change in the calculator.
- How much slab does 20 L of curing compound cover?
- At the Concrete Curing Compound Coverage Calculator's own settings, 100 m² (1,076 sq ft) — a slab about 10 × 10 m. Every figure follows the settings, which you can change in the calculator.
- How many square feet does a gallon of curing compound cover?
- About 200 square feet per US gallon, roughly 5 m² per litre, is a commonly cited rate for one application, but it varies by formulation and whether it is sprayed or rolled. A textured finish takes more than a smooth trowelled one. The data sheet's figure is the one to use.
- When should curing compound be applied to concrete?
- As soon as the final finishing is done and the bleed water has gone from the surface, so the slab's own water is held in rather than evaporating. Applying it late lets the surface dry out in the hours that matter most for strength and for resisting dusting and cracking.
- Can I put flooring or a coating over curing compound?
- Not always. Many curing compounds interfere with adhesives and coatings applied later and have to be removed mechanically first, and VOC rules restrict solvent-based ones in many regions. Check the product against the specification and the future floor finish before ordering.