Sika

SikaEmaco-426

Fast-setting vertical patching mortar · US · manufacturer-sourced

Check your container: This countdown is for the Fast-setting vertical patching mortar variant. Similar-looking versions may have different times.

How long does SikaEmaco-426 take to dry?

Short answer

Set / hardened: 10–20 minutes after application.
Concrete & repair

Placement-to-service plan

Set, hardening and loading come days apart

  1. Place and finish the Fast-setting vertical patching mortar
  2. Keep it moist or protected as directed
  3. Load it only at the stated strength time

This product’s stated stages Quoted at 70°F and 50% humidity

  • Working time ends10–15 minutes
  • Set10–20 minutes

Worth noticing: Working time is only 10–15 minutes; the next stated stage, set, is 10–20 minutes.

Common mistake: Driving on it because it feels hard; strength keeps building for days.

Concrete & repair

Return-to-use gates

Open the surface gradually instead of treating cure as one moment

Touch / inspectA surface check only
Foot trafficUse the stated walking time
Heavy useWait for furniture, water or vehicle readiness

Time the concrete cure

When was the concrete placed?
Conditions that affect drying
Where?
Thickness

Stated times

  • Working time ends10–15 minutes
  • Set / hardened10–20 minutes

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: 70°F (21°C) and 50% relative humidity
  • Concrete sealer times are lab values. Cool air, humidity, thick coats and poor airflow slow them. Follow the current data sheet.
  • Apply at 40°F or above
  • Region US. Formulas can differ between countries; check your container.
  • Working time ends: At 70°F (21°C) and 50% relative humidity.
  • Set / hardened: At 70°F (21°C) and 50% relative humidity.
  • 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 Report outdated information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 SikaEmaco-426
Variant
Fast-setting vertical patching mortar
Region
US
Listed use
concrete patching, vertical repair
Timed stages recorded
tooling, set
Source checked
2026-10-25

Documentation: Technical data sheet · Version 02.02, July 2025

Condition attached to the stated time: At 70°F (21°C) and 50% relative humidity.

About this product

A vertical patching mortar that sets in 10 to 15 minutes and reaches final set in 15 to 20, with the same short window for placing it. The sheet says to cure with a water-based curing compound and to protect from freezing for 24 hours.

Using this specific product

Sika SikaEmaco-426 is listed here as the Fast-setting vertical patching mortar version for concrete patching and vertical repair. 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 Fast-setting vertical patching mortar; related versions can use different timing.
  • For concrete patching and vertical repair, pay particular attention to substrate moisture, depth, temperature and protection from traffic.
  • At 70°F (21°C) and 50% relative humidity.

How to check readiness

Check the slowest, coolest section before loading or coating. The data sheet gives a placement time of 10 to 15 minutes. The data sheet lists a set time of 10 to 15 minutes and a final set of 15 to 20 minutes (ASTM C 807).

Avoid this mistake

Early strength, coating readiness and full cure are separate decisions.

Compare with similar products

Keep going

Questions

How long does this product take to dry?

Sika states: The data sheet gives a placement time of 10 to 15 minutes. Conditions: At 70°F (21°C) and 50% relative humidity.. The data sheet lists a set time of 10 to 15 minutes and a final set of 15 to 20 minutes (ASTM C 807). Conditions: At 70°F (21°C) and 50% relative humidity.. These are the manufacturer’s stated times, not a guarantee.

How long do I have to place SikaEmaco-426?

The data sheet gives a placement time of 10 to 15 minutes at 70°F and 50% relative humidity.

How long do I have to work with this product?

Sika states: The data sheet gives a placement time of 10 to 15 minutes. Conditions: At 70°F (21°C) 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?

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.

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