Custom Building Products

Polyblend HP High Performance Fine Aggregate Grout

Cement grout for joints up to 1/2 in. · US · manufacturer-sourced

Check your container: This countdown is for the Cement grout for joints up to 1/2 in. variant. Similar-looking versions may have different times.

How long before you can walk on Custom Building Products Polyblend HP High Performance Fine Aggregate Grout?

Short answer

Light foot traffic: 16 hours after application.
Immersion-ready: 14 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 Cement grout for joints up to 1/2 in.
  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

  • Light foot traffic16 hours
  • Immersion-ready2 weeks

Worth noticing: Light foot traffic at 16 hours; immersion-ready at 2 weeks.

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

  • Light foot traffic16 hours
  • Immersion-ready14 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: 73°F (23°C)
  • Set and cure times depend on temperature, water content and thickness. Follow the current data sheet.
  • Apply at 50°F or above
  • Region US. Formulas can differ between countries; check your container.
  • Light foot traffic: The source gives no conditions for this time.
  • Immersion-ready: The source gives no conditions for this time.
  • 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 Report outdated information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
Custom Building Products Polyblend HP High Performance Fine Aggregate Grout
Variant
Cement grout for joints up to 1/2 in.
Region
US
Listed use
tile grout, floors, walls
Timed stages recorded
light foot, immersion
Source checked
2026-10-25

Documentation: Technical data sheet · TDS-360, dated 8/14/2026

Condition attached to the stated time: The source gives no conditions for this time.

About this product

A newer high-performance sanded grout. The August 2026 sheet allows foot traffic at 16 hours but bars submersion for 14 days, and asks for protection from the weather outdoors for 7 days.

Using this specific product

Custom Building Products Polyblend HP High Performance Fine Aggregate Grout is listed here as the Cement grout for joints up to 1/2 in. version for tile grout, floors, and 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 Cement grout for joints up to 1/2 in.; related versions can use different timing.
  • For tile grout, floors, and walls, pay particular attention to joint depth, water ratio, cleanup and room conditions.
  • The source gives no conditions for this time.

How to check readiness

Inspect shaded joints and verify the stated water or traffic milestone. Try a protected edge first and avoid turning, dragging or concentrated loads. Continuous immersion is more demanding than splashes; wait for the specific immersion milestone.

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 walk on this product?

Custom Building Products states: The data sheet gives 16 hours before foot traffic. Conditions: The source gives no conditions for this time.. The data sheet says not to submerge the grout for 14 days. Conditions: The source gives no conditions for this time.. These are the manufacturer’s stated times, not a guarantee.

How long before a pool-side or wet-room floor grouted with Polyblend HP can be submerged?

The data sheet says not to submerge for 14 days. Foot traffic is allowed after 16 hours, and exterior work should be protected for 7 days.

How long before this product can be immersed in water?

Custom Building Products states: The data sheet says not to submerge the grout for 14 days. Conditions: The source gives no conditions for this time.. These are the manufacturer’s stated times, not a guarantee.

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

Set and cure times depend on temperature, water content and thickness. Follow the current data sheet. Follow the product label for your conditions.

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