Sikalastic-350
Polyurethane waterproofing coating · US · manufacturer-sourced
How long before you can drive on Sikalastic-350?
Short answer
Placement-to-service plan
Set, hardening and loading come days apart
- Place and finish the Polyurethane waterproofing coating
- 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 ends15–25 minutes
- Heavy traffic6 hours
- Recoat window closes1 day
Worth noticing: Working time is only 15–25 minutes; the next stated stage, heavy traffic, is 6 hours.
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 ends15–25 minutes
- Recoat window closes1 day
- Heavy traffic6 hours
From Sika data sheet · checked 2026-10-25. Anything not listed isn’t stated by the manufacturer.
Manufacturer website: usa.sika.com
Conditions & fine print
- Stated conditions: 73°F (23°C)
- Pot life, recoat and traffic times depend on temperature and film thickness. Follow the current data sheet.
- Temperature range: 50°F to 90°F
- Region US. Formulas can differ between countries; check your container.
- Working time ends: At 75°F (24°C).
- Recoat window closes: The source gives no conditions for this time.
- Heavy traffic: At 70°F (21°C).
- 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 Report outdated information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
- Sika Sikalastic-350
- Variant
- Polyurethane waterproofing coating
- Region
- US
- Listed use
- deck waterproofing, vehicular traffic, parking decks
- Timed stages recorded
- tooling, recoat max, heavy traffic
- Source checked
- 2026-10-25
Documentation: Technical data sheet · Version 01.03, August 2025
Condition attached to the stated time: At 75°F (24°C).
About this product
A fast polyurethane deck coating. It has a short recoat window, 24 hours, and a fast turnaround to vehicles, 6 hours at 70°F, compared with 36 hours for Sikalastic-720 One Shot.
Using this specific product
Sika Sikalastic-350 is listed here as the Polyurethane waterproofing coating version for deck waterproofing, vehicular traffic, and parking decks. 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 Polyurethane waterproofing coating; related versions can use different timing.
- For deck waterproofing, vehicular traffic, and parking decks, pay particular attention to substrate moisture, depth, temperature and protection from traffic.
- At 75°F (24°C). The source gives no conditions for this time. At 70°F (21°C).
How to check readiness
Check the slowest, coolest section before loading or coating. The data sheet gives a pot life of 15 to 25 minutes. The data sheet gives a maximum recoat window of 24 hours. Open the area gradually and keep heavy or hot tires off until the full stated milestone.
Avoid this mistake
Early strength, coating readiness and full cure are separate decisions.
Questions
How long before you can drive on this product?
Sika states: The data sheet gives a pot life of 15 to 25 minutes. Conditions: At 75°F (24°C).. The data sheet gives a maximum recoat window of 24 hours. Conditions: The source gives no conditions for this time.. The data sheet says to allow a minimum cure of 6 hours before vehicular traffic. Conditions: At 70°F (21°C).. These are the manufacturer’s stated times, not a guarantee.
How soon can cars drive on Sikalastic-350?
The data sheet allows vehicular traffic after a minimum of 6 hours at 70°F. Additional coats must go on within 24 hours, and the minimum application temperature is 50°F and rising.
How long do I have to work with this product?
Sika states: The data sheet gives a pot life of 15 to 25 minutes. Conditions: At 75°F (24°C).. These are the manufacturer’s stated times, not a guarantee.
What affects how long this product takes to dry or cure?
Pot life, recoat and traffic times depend on temperature and film thickness. Follow the current data sheet. Follow the product label for your conditions.