Level-325 Self-Leveling Underlayment
Powder (all sizes) · US · not yet reviewed
How long before you can install flooring over Sika Level-325 Self-Leveling Underlayment?
Short answer
Return-to-use gates
Open the surface gradually instead of treating cure as one moment
Calculate return-to-use time
Your countdown
Stated times
- Working time ends20 minutes
- Ready for floor covering4 hours to 1 day
- Light foot traffic4 hours
From Sika product page · checked 2026-10-25. Anything not listed isn’t stated by the manufacturer.
Manufacturer website: usa.sika.com
Conditions & fine print
- Stated conditions: Not stated by the manufacturer
- The page gives no time for tile. Its FAQ says Level-325 typically requires 16 to 24 hours before flooring installation and directs readers to the product data sheet. Always make sure the moisture content meets the requirement of the floor-finish adhesive.
- Region US. Formulas can differ between countries; check your container.
- Working time ends: Application above 73°F (23°C) reduces the pot life and working time.
- Ready for floor covering: Above 3/8 inch, the data sheet calls for a mat test (ASTM D-4263).
- Light foot traffic: Actual times change with substrate and ambient conditions, including temperature, humidity and layer thickness.
- Entered from the manufacturer source; second review pending. Report outdated information
- Actual results depend on preparation, thickness, ventilation, temperature, humidity, mixing and substrate.
Using this specific product
Sika Level-325 Self-Leveling Underlayment is listed here as the Powder (all sizes) version for self leveler, underlayment, and floor prep. For installing or finishing a floor, 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 Powder (all sizes); related versions can use different timing.
- For self leveler, underlayment, and floor prep, pay particular attention to subfloor condition, trowel coverage, room temperature and traffic plan.
- Application above 73°F (23°C) reduces the pot life and working time. Above 3/8 inch, the data sheet calls for a mat test (ASTM D-4263). Actual times change with substrate and ambient conditions, including temperature, humidity and layer thickness.
How to check readiness
Test the least-ventilated area before walking, covering or replacing furniture. Pot life and working time are approximately 20 minutes. Non-moisture-sensitive floor coverings can go over it after 4 hours. Moisture-sensitive floor coverings need 24 hours up to 3/8 inch (9.5 mm). Try a protected edge first and avoid turning, dragging or concentrated loads.
Avoid this mistake
Foot traffic, furniture and rugs can have different return times.
Questions
How long before you can install flooring over this product?
Sika states: Pot life and working time are approximately 20 minutes. Conditions: Application above 73°F (23°C) reduces the pot life and working time.. Non-moisture-sensitive floor coverings can go over it after 4 hours. Moisture-sensitive floor coverings need 24 hours up to 3/8 inch (9.5 mm). Conditions: Above 3/8 inch, the data sheet calls for a mat test (ASTM D-4263).. Walkable after 4 hours. Conditions: Actual times change with substrate and ambient conditions, including temperature, humidity and layer thickness.. These are the manufacturer’s stated times, not a guarantee.
How long do I have to work with this product?
Sika states: Pot life and working time are approximately 20 minutes. Conditions: Application above 73°F (23°C) reduces the pot life and working time.. These are the manufacturer’s stated times, not a guarantee.
How long before I can walk on tile set with this product?
Sika states: Walkable after 4 hours. Conditions: Actual times change with substrate and ambient conditions, including temperature, humidity and layer thickness.. These are the manufacturer’s stated times, not a guarantee.
What affects how long this product takes to dry or cure?
The page gives no time for tile. Its FAQ says Level-325 typically requires 16 to 24 hours before flooring installation and directs readers to the product data sheet. Always make sure the moisture content meets the requirement of the floor-finish adhesive. Follow the product label for your conditions.