Concentrate
Crystalline concrete waterproofing powder · US · manufacturer-sourced
How long before Xypex Concentrate can get rained on?
Short answer
Placement-to-service plan
Set, hardening and loading come days apart
- Place and finish the Crystalline concrete waterproofing powder
- Keep it moist or protected as directed
- Load it only at the stated strength time
This product’s stated stages Quoted at 73°F
- Working time ends20 minutes
- Recoat window closes1 day
- Rain-ready2 days
- Immersion-ready12 days
Worth noticing: Working time is only 20 minutes; the next stated stage, recoat window closes, is 1 day.
Common mistake: Driving on it because it feels hard; strength keeps building for days.
Return-to-use gates
Open the surface gradually instead of treating cure as one moment
Time the concrete cure
Your countdown
Stated times
- Working time ends20 minutes
- Recoat window closes1 day
- Rain-safe2 days
- Immersion-ready12 days
From Xypex data sheet · checked 2026-10-25. Anything not listed isn’t stated by the manufacturer.
Manufacturer website: xypex.com
Conditions & fine print
- Stated conditions: 73°F (23°C)
- Concrete sealer times are lab values. Cool air, humidity, thick coats and poor airflow slow them. Follow the current data sheet.
- Apply at 41°F or above
- Region US. Formulas can differ between countries; check your container.
- Working time ends: The source gives no conditions for this time.
- Recoat window closes: The source gives no conditions for this time.
- Rain-safe: The source gives no conditions for this time.
- Immersion-ready: The 12 days may or may not include the 3 days of curing; the sheet does not say.
- Entered from the cited manufacturer documentation. Check the current label for the exact formula and region. Report outdated information
- Actual results depend on preparation, thickness, ventilation, temperature, humidity, mixing and substrate.
Confirm this is your product
Closely named formulas, colors and regional versions can use different times. Match these details to your container before starting a countdown.
- Exact listing
- Xypex Concentrate
- Variant
- Crystalline concrete waterproofing powder
- Region
- US
- Listed use
- concrete waterproofing, water-holding structures
- Timed stages recorded
- tooling, recoat max, rain ready, immersion
- Source checked
- 2026-10-25
Documentation: Technical data sheet · REV-02-26
Condition attached to the stated time: The source gives no conditions for this time.
About this product
A crystalline waterproofing slurry with a counterintuitive schedule: the second coat goes on within 24 hours while the first is still green, the surface needs misting three times a day for two to three days, and a tank waits 12 days before it holds water (18 for wastewater). It works on a damp, saturated surface.
Using this specific product
Xypex Concentrate is listed here as the Crystalline concrete waterproofing powder version for concrete waterproofing and water-holding structures. For repairing concrete or masonry, the useful question is not simply whether the surface looks finished—it is whether the exact next-action milestone shown above has been reached.
Before you start
- Confirm the package says Crystalline concrete waterproofing powder; related versions can use different timing.
- For concrete waterproofing and water-holding structures, pay particular attention to substrate moisture, depth, temperature and protection from traffic.
- The source gives no conditions for this time. The 12 days may or may not include the 3 days of curing; the sheet does not say.
How to check readiness
Check the slowest, coolest section before loading or coating. The sheet says to mix only what can be applied in 20 minutes. The sheet says the second coat goes on after the first has reached an initial set but while it is still green, less than 24 hours. Use this only as the rainfast milestone. It does not establish general cure or re-entry safety.
Avoid this mistake
Early strength, coating readiness and full cure are separate decisions.
Compare with similar products
- Compare with SAKRETE Concrete Crack FillerRain-ready: 1 day there, 2 days here.
- Compare with DAP Concrete Crack FillerRain-ready: 1 day there, 2 days here.
Questions
How long before this product can get rained on?
Xypex states: The sheet says to mix only what can be applied in 20 minutes. Conditions: The source gives no conditions for this time.. The sheet says the second coat goes on after the first has reached an initial set but while it is still green, less than 24 hours. Conditions: The source gives no conditions for this time.. The sheet says the coating must be protected from rainfall, frost, wind, standing water and temperatures below 5°C for not less than 48 hours. Conditions: The source gives no conditions for this time.. The sheet says Xypex should be cured for three days and allowed to set for 12 days (18 days for wastewater or corrosive solutions) before filling the structure with liquid. Conditions: The 12 days may or may not include the 3 days of curing; the sheet does not say.. These are the manufacturer’s stated times, not a guarantee.
Why does Xypex want the second coat while the first is still green?
The sheet says to apply it after the first coat has reached an initial set but while it is still green, less than 24 hours. It also says to cure by fine mist three times a day for two to three days.
How long do I have to work with this product?
Xypex states: The sheet says to mix only what can be applied in 20 minutes. Conditions: The source gives no conditions for this time.. These are the manufacturer’s stated times, not a guarantee.
How long before this product can be immersed in water?
Xypex states: The sheet says Xypex should be cured for three days and allowed to set for 12 days (18 days for wastewater or corrosive solutions) before filling the structure with liquid. Conditions: The 12 days may or may not include the 3 days of curing; the sheet does not say.. These are the manufacturer’s stated times, not a guarantee.
What affects how long this product takes to dry or cure?
Concrete sealer times are lab values. Cool air, humidity, thick coats and poor airflow slow them. Follow the current data sheet. Follow the product label for your conditions.