Sika

Sikaflex-226

Moisture-curing polyurethane adhesive sealant · US · manufacturer-sourced

Check your container: This countdown is for the Moisture-curing polyurethane adhesive sealant variant. Similar-looking versions may have different times.

How long does Sikaflex-226 take to dry?

Short answer

Safe to touch: 4 hours after application.
Adhesive & glue

Bond-strength path

Hold, handle and full load come at different times

  1. Join the parts with the Moisture-curing polyurethane adhesive sealant
  2. Hold or clamp for the set time
  3. Put load on the bond only at full strength

This product’s stated stages Quoted at 73°F and 50% humidity

  • Working time ends1 hour
  • Safe to touch4 hours

Worth noticing: Working time is only 1 hour; the next stated stage, safe to touch, is 4 hours.

Common mistake: Releasing the clamps because the glue line feels firm, long before it can carry a load.

Adhesive & glue

Bond-strength path

Assembly, handling and full load are different stages

1 · AssembleClean, fit and apply the Moisture-curing polyurethane adhesive sealant version correctly.
2 · HoldKeep the joint undisturbed through its set or clamp stage.
3 · LoadUse full cure—not surface firmness—before demanding use.

Time bond readiness

When was the bond assembled?
Conditions that affect drying
Where?
Thickness

Stated times

  • Working time ends1 hour
  • Safe to touch4 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) and 50% relative humidity
  • Times depend on temperature, humidity, film or bead thickness and airflow. Follow the current data sheet and label.
  • Region US. Formulas can differ between countries; check your container.
  • Working time ends: At 23°C (73°F) and 50% relative humidity.
  • Safe to touch: The test conditions for skin time are not stated.
  • 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 Report outdated information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 Sikaflex-226
Variant
Moisture-curing polyurethane adhesive sealant
Region
US
Listed use
bonding, sealing
Timed stages recorded
tooling, touch
Source checked
2026-10-25

Documentation: Technical data sheet · Product data sheet v01.01, December 2025

Condition attached to the stated time: At 23°C (73°F) and 50% relative humidity.

About this product

A polyurethane with a long skin time, 4 hours, and a 60 minute open time. The sheet refers to a curing-speed diagram without giving values in text.

Using this specific product

Sika Sikaflex-226 is listed here as the Moisture-curing polyurethane adhesive sealant version for bonding and sealing. For bonding parts, 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 Moisture-curing polyurethane adhesive sealant; related versions can use different timing.
  • For bonding and sealing, pay particular attention to surface fit, cleanliness, clamping pressure and bond-line thickness.
  • At 23°C (73°F) and 50% relative humidity. The test conditions for skin time are not stated.

How to check readiness

Test a noncritical offcut or wait for the stated load milestone before stressing the joint. The sheet gives an open time of 60 minutes. Touch only a hidden edge first; a dry surface can conceal a soft layer underneath.

Avoid this mistake

Handling strength and full load strength are different milestones.

Compare with similar products

Keep going

Questions

How long does this product take to dry?

Sika states: The sheet gives an open time of 60 minutes. Conditions: At 23°C (73°F) and 50% relative humidity.. The sheet gives a skin time of 4 hours. Conditions: The test conditions for skin time are not stated.. These are the manufacturer’s stated times, not a guarantee.

Does the Sikaflex-226 sheet give a cure time?

Not in text. It gives a skin time of 4 hours and an open time of 60 minutes, and refers to a curing-speed diagram for the rest.

How long do I have to work with this product?

Sika states: The sheet gives an open time of 60 minutes. Conditions: At 23°C (73°F) and 50% relative humidity.. These are the manufacturer’s stated times, not a guarantee.

What affects how long this product takes to dry or cure?

Times depend on temperature, humidity, film or bead thickness and airflow. Follow the current data sheet and label. Follow the product label for your conditions.

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