Can a worn patio get a new surface without a jackhammer? QUIKRETE’s Re-Cap data sheet says its resurfacer goes on from a feather edge of 1/16 in up to 1/2 in thick. The hard part is not the coat; it is the cleaning, the timing and the water.
To resurface a concrete patio, clean it with a pressure washer, repair damage first, wet the slab and remove standing water, then squeegee a coat of QUIKRETE’s Re-Cap resurfacer at 1/16 to 1/8 in. Add an optional second coat after at least 3 hours, broom finish, and cure moist for 24 to 48 hours.
What Resurfacing Can and Cannot Fix
Resurfacing puts a thin new layer on a slab that is otherwise sound; it does not repair damage underneath. The Re-Cap sheet says damaged concrete must be repaired and cured before resurfacing, and that old cracks can reappear.
The sheet adds that reflective cracking cannot be completely prevented, especially without adequate control joints or if the slab settles. Existing control joints stay, and existing expansion joints are kept and raised to the new height. For joint layout in a new slab, see our control joint spacing calculator.
Two surfaces are ruled out. Apply the resurfacer only to bare concrete, not to painted or sealed surfaces, and not over acrylic or polyurethane crack fillers. This article rests on three QUIKRETE sheets. Two are resurfacer sheets. The third is for Acrylic Concrete Cure & Seal, a clear acrylic made for sealing all types of concrete. None gives a test for telling whether your slab is sealed.
How many bags to buy is a separate question, and our concrete resurfacer calculator answers it. A new pour is a different job, covered by the concrete patio calculator.
Prep That Decides Whether the Coat Bonds
Cleaning decides the bond. The Re-Cap sheet says old concrete must be rigorously cleaned and calls pressure washing essential. Wash, sweep, scrape, chip or grind off loose concrete, paint, greasy residue, algae and mildew.
Oil or grease stains can be removed by acid washing, detergent washing or bleaching, then rinsed thoroughly. The two sheets differ on washer power: the Re-Cap sheet lists a 2,500 psi pressure washer, and the older Concrete Resurfacer sheet recommends 3,500 psi.
Repairs come next. Spalled or pitted areas can be patched with the resurfacer mixed trowelable. Cracks must be widened, cleaned and filled with trowelable resurfacer, and the repairs must cure before the topping goes on.
Then lay out the job. Toppings under 1/8 in need no forms; thicker ones need form boards or guides. Section the work into areas no larger than about 144 sq ft, using joints as breaks, and protect joints with duct tape or weather-stripping.
Mixing Consistency and the 20-Minute Clock
Mix small batches, because squeegee mix has a working time of about 20 minutes at 73 F. The Re-Cap sheet says to mix no more than you can use in 20 minutes for squeegee work, or 10 minutes for trowel work. It says not to retemper with extra water.
For squeegee or brush consistency, use about 2-1/2 to 3 qt of potable water per 40 lb bag, which is 0.625 to 0.75 gal. Trowelable mix takes about 2-1/4 qt. Use a 5 gal bucket and a 1/2 in drill with a paddle. Add the powder to the water while mixing.
- Mix. Run the paddle for 2 minutes, until the mix is lump-free and pourable.
- Rest. Let it sit for 1 to 2 minutes.
- Remix. Run the paddle for 1 more minute, then start coating.
The sheet also says not to use QUIKRETE Concrete Acrylic Fortifier (#8610) in this mix.
A 12 x 12 Foot Patio Takes Three Batches
A 12 x 12 ft patio is 144 sq ft, exactly the largest section the sheets allow, so it is one section. The Re-Cap sheet’s thin-coat yield is about 65 sq ft per 40 lb bag at 1/16 in with a broom or squeegee.
One bag covers 65 / 144 = 0.45 of the patio. A single thin coat therefore takes 144 / 65 = 2.2 bags’ worth of mix. If each bucket batch is one bag, that is three batches: 65 + 65 + 14 = 144 sq ft.
This is not a shopping list. The sum has no waste allowance, so use the calculator for the count to buy.
Wet the Slab, Then Apply Coat One and Coat Two
Water the old concrete until it is saturated, then remove all standing water, especially from low spots. That is the Re-Cap sheet’s wording, and the concrete must stay damp, so re-dampen it if it dries.
For the squeegee first coat, pour and spread with a long-handled squeegee, working the material into the pores to a nominal 1/16 to 1/8 in. Do not overwork it, and finish corners and edges with a masonry brush. The trowel method forces a thin dash coat into the surface, then builds to a nominal 1/16 to 1/4 in.
The second coat is optional. Wait at least 3 hours for the first coat, until it takes light foot traffic, then mist it lightly. The second coat must go on within 24 hours of the first. Otherwise the surface must be pressure washed again, carefully, without washing off the first coat. The total can build up to 1/2 in, and thicker toppings go on in layers of no more than 1/4 in each. The older sheet says 2 to 3 hours and adds that if a footprint indents, wait 1 to 2 more hours and check again.
Here is the clock for the Re-Cap sheet. Put the first coat on at 8:00 am. The earliest light foot traffic for a second coat is 11:00 am. Put it on before 8:00 am the next day, or wash the surface again. If the 6 and 24 hours count from the last coat, a second coat at 11:00 am means foot traffic at 5:00 pm and vehicles at 11:00 am the next day.
Finishing, Waiting and Curing
Broom finish when the surface is thumbprint hard, with all strokes in one direction, opposite the flow of traffic. An edger and groover can be used once the surface is hard enough.
Work from one end to the other, and between joints, without stopping. That takes enough labor on hand. Finishing time is shorter in hot weather and longer in cold.
Start moist curing as soon as the product is hard enough not to be damaged by a gentle mist. Continue for 24 to 48 hours before use. Protect the surface from rain for at least 8 hours. Do not cover it unless you need immediate rain protection; the sheet names sheet plastic for that and says it can affect color.
Both sheets give the same traffic times: 6 hours for foot traffic and 24 hours for vehicles. For a freshly poured slab rather than a topping, see our concrete curing time calculator.
Where the Two Sheets Differ, and When to Ask
QUIKRETE’s Re-Cap sheet (No. 1131-47) and its older Concrete Resurfacer sheet (No. 1131-40) disagree on several numbers. This article cannot tell which sheet your own product follows, so follow the bag.
| Item | Re-Cap sheet (1131-47) | Older sheet (1131-40) |
|---|---|---|
| Yield per 40 lb bag at the thinnest coat | About 65 sq ft | About 90 sq ft |
| Water per bag, squeegee or screed | 2-1/2 to 3 qt (5 to 6 pt) | About 6 to 6.5 pt |
| Mix, rest, remix | 2 min, 1 to 2 min, 1 min | 3 min, about 3 min, remix |
| Too-thick mix | Do not retemper with extra water | Add water sparingly |
| Second-coat wait | At least 3 hours | 2 to 3 hours |
| Pressure washer | 2,500 psi | 3,500 psi |
| Foot and vehicle traffic | 6 hours, 24 hours | 6 hours, 24 hours |
Stop and ask QUIKRETE Technical Services when the air or surface temperature is outside 50 F to 90 F; the Re-Cap sheet says to contact them in that case. The older sheet words it differently. Do not apply unless the dampened surface will stay above 50 F for 8 hours after placement and will not freeze for 24 hours after. Paint, sealer and acrylic or polyurethane crack fillers are also stop signs.
Enter your patio’s length, width and coat thickness in the resurfacer bag-count estimator for the bag number this article leaves out.
Keep reading: when to seal new concrete, why concrete cracks and how thick a slab should be.
More: slabs and flatwork calculators or all construction guides.
FAQs About Resurfacing Concrete
How long before I can walk or park on a resurfaced patio?
Both QUIKRETE sheets say 6 hours for foot traffic and 24 hours for vehicles. Both also call for moist curing of 24 to 48 hours.
Can I resurface a patio in direct sunlight?
No. The Re-Cap sheet says not to apply in direct sunlight and to apply early in the morning or late in the afternoon. It also says to keep the concrete damp and re-dampen it if it dries.
What temperature range does the resurfacer allow?
The Re-Cap sheet says air and surface temperature between 50 F and 90 F. Outside that range, contact QUIKRETE Technical Services.
Can I resurface painted or sealed concrete?
No. The Re-Cap sheet says to apply only to bare concrete, not to painted or sealed surfaces. It also says not to apply over acrylic or polyurethane crack fillers.
What if the mix starts to set in the bucket?
Do not add water. The Re-Cap sheet says not to retemper. Mix only what you can use in 20 minutes for squeegee work or 10 minutes for trowel work.
Do I need two coats?
No, the second coat is optional on both sheets. The Re-Cap sheet allows a second coat after at least 3 hours and within 24 hours, building the total up to 1/2 in.
Why must I wet the slab first?
The Re-Cap sheet says to water the old concrete to a saturated condition, then remove all standing water. This article has no sourced reason beyond that, so follow the step as written.
Sources and Further Reading
References Used in This Article
- QUIKRETE, Re-Cap Concrete Resurfacer data sheet (No. 1131-47, revised 25 July 2018), accessed 2026-10-19.
- QUIKRETE, Concrete Resurfacer data sheet (No. 1131-40, older sheet, no revision date), accessed 2026-10-19.
- QUIKRETE, Acrylic Concrete Cure & Seal, Satin Finish data sheet (revised October 2020), accessed 2026-10-19.
The figures come from QUIKRETE’s data sheets, not from a test of your slab. Steps here follow QUIKRETE’s data sheets named in Sources and apply to its products. Reviewed for accuracy by Prof. Dr. Khalil Mudassar, PhD. Last updated 2026-10-19.
Shakeel Muzaffar is the Founder and Editor-in-Chief, with over 15 years of experience in digital publishing and online tool development. He oversees editorial quality and formula verification to ensure accurate, practical, and easy-to-use calculators.