Sika

Sika-Tite Undertile

Under-tile waterproofing · AU · manufacturer-sourced

Check your container: This countdown is for the Under-tile waterproofing variant. Similar-looking versions may have different times.

How long before you can tile over Sika-Tite Undertile?

Short answer

Ready for tile: 8 hours after application.
Ready to flood test: 5 days after application.
Grout & tile mortar

Grout wait-and-wash

Wipe-off, light foot traffic and sealing each have their own wait

  1. Pack the joints with Under-tile waterproofing
  2. Wipe off inside the stated window
  3. Seal and use only after the stated cure

This product’s stated stages Quoted at 73°F

  • Ready for tile8 hours
  • Flood test5 days

Worth noticing: Ready for tile at 8 hours; flood test at 5 days.

Common mistake: Sealing or soaking a grout joint that has set but not fully dried.

Grout & tile mortar

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 grout cure

When was the grout applied?
Conditions that affect drying
Where?
Thickness

Stated times

  • Ready for tile8 hours
  • Ready to flood test5 days

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)
  • Tile adhesive times assume the stated temperature on an absorbent substrate. Dense tiles, damp or cold rooms and thick beds lengthen them. Follow the current data sheet.
  • Temperature range: 41°F to 95°F
  • Region AU. Formulas can differ between countries; check your container.
  • Ready for tile: Apply between 5 and 35°C.
  • Ready to flood test: Concrete must be 28 days old and screed 7 days.
  • 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 Report outdated information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 Sika-Tite Undertile
Variant
Under-tile waterproofing
Region
AU
Listed use
bathrooms, balconies
Timed stages recorded
tile ready, flood test
Source checked
2026-10-25

Documentation: Technical data sheet · Product data sheet v01.04, Apr 2023

Condition attached to the stated time: Apply between 5 and 35°C.

About this product

An under-tile waterproofer with a long flood-test wait: at least 5 days, against 8 hours before tiling.

Using this specific product

Sika Sika-Tite Undertile is listed here as the Under-tile waterproofing version for bathrooms and balconies. For grouting tile, 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 Under-tile waterproofing; related versions can use different timing.
  • For bathrooms and balconies, pay particular attention to joint depth, water ratio, cleanup and room conditions.
  • Apply between 5 and 35°C. Concrete must be 28 days old and screed 7 days.

How to check readiness

Inspect shaded joints and verify the stated water or traffic milestone. The sheet gives tiling after a minimum of 8 hours. The sheet gives a flood test after a minimum of 5 days.

Avoid this mistake

Color change alone does not prove the joint is ready for immersion.

Compare with similar products

Keep going

Questions

How long before you can tile over this product?

Sika states: The sheet gives tiling after a minimum of 8 hours. Conditions: Apply between 5 and 35°C.. The sheet gives a flood test after a minimum of 5 days. Conditions: Concrete must be 28 days old and screed 7 days.. These are the manufacturer’s stated times, not a guarantee.

How long before flood-testing Sika-Tite Undertile?

The sheet gives a minimum of 5 days.

How long before I can flood test this product?

Sika states: The sheet gives a flood test after a minimum of 5 days. Conditions: Concrete must be 28 days old and screed 7 days.. These are the manufacturer’s stated times, not a guarantee.

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

Tile adhesive times assume the stated temperature on an absorbent substrate. Dense tiles, damp or cold rooms and thick beds lengthen them. Follow the current data sheet. Follow the product label for your conditions.

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