Recoat Windows and Cure Times for Every EpoxyPRO Coating (Chart)
B-707 High Build Epoxy recoats in 8 to 12 hr, takes foot traffic in 12 to 14 hr and reaches full cure in 2 to 7 days at 60 to 90°F. Every other coating in the line is in the chart below, from the Specs block on each product page, at about 70°F for the stated batch size. Colder slabs stretch every number toward the long end; a hot slab shortens working time first and cure second.
The chart
DS = the product page gives no number; the figure is on the product's data sheet, under Technical documents on its product page. Specs as of November 2026.
| Product | Mix (vol) | Working time (batch) | Tack free | Recoat | Foot traffic | Full cure | Apply at | RH | VOC |
|---|---|---|---|---|---|---|---|---|---|
| B-707 High Build Epoxy | 2:1 | 30 to 50 min (1.5 gal) | 5 to 8 hr | 8 to 12 hr | 12 to 14 hr | 2 to 7 days | 60 to 90°F | under 85% | under 2 g/L |
| B-181 Quick Set Epoxy, Cold Weather | 2:1 | 16 to 26 min (1.5 gal) | 3.5 to 5.5 hr | 6 to 8 hr | 6 to 12 hr | 2 to 5 days | 45 to 90°F | under 85% | under 2 g/L |
| B-933 Fast Cure Polyurea | 4:1 | 15 to 25 min (150 g) | DS | 3 to 6 hr | 8 to 12 hr | 3 to 5 days | 40 to 90°F | under 90% | 11 g/L |
| P-707LVP High Build Epoxy Primer | 2:1 | 35 to 55 min (1.5 gal) | 6 to 9 hr | 10 to 14 hr | 12 to 16 hr | 2 to 7 days | 60 to 90°F | under 85% | under 95 g/L |
| P-181LVP Quick Set Primer, Cold Weather | 2:1 | 26 to 38 min (150 g) | 4.5 to 6 hr | 7 to 9 hr | 8 to 12 hr | 2 to 5 days | 45 to 90°F | under 85% | under 85 g/L |
| P-015 Water Based Epoxy Primer | 4:1 | 60 to 90 min | 5 to 8 hr | 7 to 10 hr | 16 to 24 hr | 2 to 7 days | 55 to 90°F | under 75% | 175 colors, 230 clear |
| P-820 Oil Stop Primer | 1:1 | 2 to 4 hr (2 gal) | 2 to 4 hr | 4 to 8 hr | 16 to 24 hr | 2 to 7 days | 55 to 90°F | DS | under 330 g/L |
| C-671 Clear Epoxy | 2:1 | 20 to 30 min (1.5 gal) | 7 to 10 hr | 12 to 18 hr | 16 to 24 hr | 2 to 7 days | 55 to 90°F | DS | under 2 g/L |
| C-137MLV Chip and Quartz Binder | 2:1 | 35 to 55 min (1.5 gal) | 6 to 8 hr | 10 to 16 hr | 14 to 18 hr | 2 to 7 days | 55 to 90°F | DS | under 35 g/L |
| T-521 Water Based Polyurethane, Gloss | 2:1 | 60+ min (150 g); cover the pail | 7 to 9 hr | 8 to 12 hr | 24 hr | 3 to 5 days | 60 to 90°F | 50 to 90% | 306 g/L |
| T-520 Water Based Polyurethane, Matte | 2:1 | 60+ min | 7 to 9 hr | 8 to 16 hr | 24 to 48 hr | 3 to 5 days | 60 to 90°F | 50 to 90% | under 50 g/L |
| T-444X Polyaspartic, Gloss | 1:1 | 10 to 20 min usable; 120+ to gel | 4 to 8 hr | 6 to 9 hr | 24 hr | 2 to 7 days | 50 to 90°F | under 85% | under 95 g/L |
| T-344 Polyaspartic, Fast Cure | 2:1 | 5 to 10 min usable; 30 to 60 to gel | 1 to 3 hr | 2 to 4 hr | 3 to 5 hr | 24 to 48 hr | 50 to 90°F | under 85% | under 159 g/L |
| T-322 / T-322S VOC Compliant Urethane | 2:1 | 120 to 240 min | 3 to 5 hr | 5 to 9 hr | 14 to 24 hr | 3 to 5 days | 45 to 90°F | under 90% | under 335 g/L |
| T-321 High Performance Urethane, Gloss | 2:1 | 120 to 300 min | 2 to 4 hr | 4 to 8 hr | 14 to 24 hr | 3 to 5 days | 45 to 90°F | under 90% | under 448 g/L |
| T-320 High Performance Urethane, Satin | 2:1 | 180 to 300 min | 2 to 4 hr | 4 to 8 hr | 14 to 24 hr | 3 to 5 days | 45 to 90°F | under 90% | under 448 g/L |
| T-359 High Solids High Wear Urethane | by weight, 3 parts | 1 to 2 hr (1 gal) | 3 to 6 hr | 6 to 10 hr | 14 to 24 hr | 3 to 5 days | 50 to 90°F | 50 to 90% | under 95 g/L |
| U-903SL / U-903M / U-903TC Urethane Cement | by weight | 15 min (77°F) | DS | DS | 12 hr | 7 days (SL: heavy traffic 24 hr) | 45 to 85°F | under 85% (SL) | 5 g/L |
| R-818 Epoxy Crack Filler | 1:1 | 60 to 180 min (2 gal) | 5 to 10 hr | immediate on small cracks | 10 to 24 hr | 2 to 7 days | 60 to 90°F | DS | DS |
| R-343 Concrete Quick Fix | 1:1 | 1 to 5 min | DS | 1 hr | 15 to 20 min | 1 hr | 20 to 90°F | DS | DS |
| R-830 Flexible Joint Sealant | 1:1 cartridge | 1 to 2 min | DS | 1 hr | 1 to 3 hr | 3 to 5 days | 40 to 90°F | DS | DS |
| R-110 Epoxy Mortar | 3 parts per unit | 30 to 40 min (0.45 cu ft) | DS | 7 to 8 hr | 14 to 16 hr | 2 to 7 days | 55 to 90°F | DS | DS |
B-253 Novolac Seal, P-409 Moisture Vapor Primer (2:1), P-139 Flexible Broadcast Primer, P-257 Novolac Primer and C-403WF Countertop Epoxy (1:1, counters only) list no cure times on their product pages. Their data sheets are under Technical documents on each product page, or call (877) 703-7699.
What "recoat" means here
The recoat figure is the earliest the next coat can go on. At 8 hr, B-707 is hard enough that the next coating sits on it and still green enough that the two bond chemically. Recoat too early and the topcoat drags, wrinkles or traps solvent. If a thumbnail leaves a mark, wait.
The window closes when the surface has cured past chemical bonding. For every epoxy in the chart the site practice is 48 hr. Past 48 hr, sand or screen the whole surface with 80 to 120 grit, vacuum twice and wipe before the topcoat.
A topcoat applied to a base coat that cured hard and glossy peels in sheets; one applied over a base that was still soft stays tacky. T-444X recoats at 6 to 9 hr, so plan both coats of a solid-color One-Day floor for the same day.
How temperature moves every number
The chart is at about 70°F. At 60°F, plan on the long end for B-707: 50 min of working time, 12 hr to recoat, 7 days to full cure. Below 60°F use B-181, which applies to 45°F and recoats in 6 to 8 hr. At 85°F, plan on the short end: 30 min of working time or less, recoat at 8 hr, foot traffic at 12 hr, and smaller batches (planning batches by temperature).
The slab temperature controls the cure: a 70°F air reading over a 55°F slab is a 55°F job. T-521 and T-520 need 50 to 90% RH to cure; solvent urethanes and polyaspartics want RH under 85 to 90%. Methods: applying epoxy below 60°F or above 85°F.
Day-by-day: Garage Pro System
The Garage Pro System is B-707 under T-521 (solid color), T-444X (full flake) or C-671 with pigment under T-521 (metallic). At 70°F:
- Day 1: grind, repair, vacuum. Roll B-707, 30 to 50 min per 1.5 gal; a 3 gal kit is one bay. Flake floors: broadcast into the wet coat. Tack free at 5 to 8 hr.
- Day 2: recoat at 8 to 12 hr. Flake: scrape, vacuum, roll T-444X at 5 to 12 mils wet. Solid and metallic: roll T-521 at 3 to 5 mils wet.
- Day 3: foot traffic. T-521 and T-444X both reach it at 24 hr.
- Day 4 to 7: park on it. The topcoat reaches full cure in 3 to 5 days and the base coat in 2 to 7. In a 60°F garage take the full 7.
Walkthrough: how to epoxy a garage floor.
Day-by-day: Garage One-Day System
The Garage One-Day System is B-933 polyurea under T-444X (full flake) or two coats of T-444X (solid color). At 70°F:
- Morning: grind, repair, vacuum. Roll B-933 (15 to 25 min per batch, 4:1 by volume) and broadcast flake to refusal. Solid color: roll pigmented T-444X at 5 to 12 mils wet.
- Three to six hours later: scrape and vacuum loose flake, roll clear T-444X at 5 to 12 mils wet. Solid color: the second coat of T-444X goes on 6 to 9 hr after the first at 70°F, once the tinted coat is hard with no tack.
- Next day, 24 hr after the clear coat: walk on it.
- Two days after the clear coat: park on it. In a cold garage allow up to 7 days.
For same-evening foot traffic on a commercial floor, T-344 replaces T-444X: tack free in 1 to 3 hr, foot traffic in 3 to 5 hr, full cure in 24 to 48 hr, with 5 to 10 min of usable working time, an installer product. Walkthrough: how to install a one-day polyaspartic garage floor.
Common questions
How long before you can recoat epoxy?
B-707 recoats in 8 to 12 hr at about 70°F; B-181 in 6 to 8 hr. Recoat within 48 hr. After that, sand and vacuum before the next coat.
How long until you can walk on an epoxy floor?
B-707 alone takes foot traffic in 12 to 14 hr. With the T-521 topcoat, 24 hr after the topcoat, which is day 3 of a Garage Pro job.
How long does epoxy take to fully cure?
B-707 reaches full cure in 2 to 7 days. T-344 polyaspartic reaches full cure in 24 to 48 hr. Cold slabs take the long end.
Can you drive on epoxy after 24 hours?
No. On a Garage Pro floor, park on day 4 to 7. On the One-Day floor, park 2 days after the clear coat at 70°F, up to 7 days in a cold garage.
Which topcoat goes over the base coat: which topcoat goes over your epoxy floor. For a cure question on your slab, call (877) 703-7699, Monday to Saturday, 8am to 6pm ET.
