Custom Building Products

SimpleGrout Pre-Mixed Grout

All colors (premixed) · US · not yet reviewed

Check your container: This countdown is for the All colors (premixed) variant. Similar-looking versions may have different times.

How long before Custom Building Products SimpleGrout Pre-Mixed Grout can get wet?

Short answer

Water-ready: 3 days after application.
Full cure: 1 day after application.
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

Calculate return-to-use time

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

Stated times

  • Full cure1 day
  • Water-ready3 days

From Custom Building Products data sheet · checked 2026-10-25. Anything not listed isn’t stated by the manufacturer.

Manufacturer website: custombuildingproducts.com

Conditions & fine print
  • Stated conditions: Above 50°F (10°C)
  • Keep surfaces and materials between 50°F and 100°F for 72 hours. Wait 4 hours before removing haze. Do not grout below 50°F.
  • Temperature range: 50°F to 100°F
  • Region US. Formulas can differ between countries; check your container.
  • Full cure: Above 50°F
  • Water-ready: Shower walls; shower floors need 7 days
  • 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 Report outdated information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

Custom Building Products SimpleGrout Pre-Mixed Grout is listed here as the All colors (premixed) version for tile, backsplash, and shower walls. 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 All colors (premixed); related versions can use different timing.
  • For tile, backsplash, and shower walls, pay particular attention to joint depth, water ratio, cleanup and room conditions.
  • Above 50°F. Shower walls; shower floors need 7 days.

How to check readiness

Inspect shaded joints and verify the stated water or traffic milestone. Reserve full cure for demanding use, chemicals, washing, immersion or load—not merely gentle handling. Test the seam or finish at the least-ventilated spot before normal water exposure.

Avoid this mistake

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

Questions

How long until I can shower after using this product?

Custom Building Products states: Allow 3 days prior to water exposure for shower walls and 7 days for shower floors. Conditions: Shower walls; shower floors need 7 days. These are the manufacturer’s stated times, not a guarantee.

How long does this product take to dry?

Custom Building Products states: Allow 3 days prior to water exposure for shower walls and 7 days for shower floors. Conditions: Shower walls; shower floors need 7 days. Cure time: typically 24 hours for temperatures above 50°F. Conditions: Above 50°F. These are the manufacturer’s stated times, not a guarantee.

How long does this product take to fully cure?

Custom Building Products states: Cure time: typically 24 hours for temperatures above 50°F. Conditions: Above 50°F. These are the manufacturer’s stated times, not a guarantee.

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

Keep surfaces and materials between 50°F and 100°F for 72 hours. Wait 4 hours before removing haze. Do not grout below 50°F. Application temperature: 50°F to 100°F. Follow the product label for your conditions.

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