Blackfriar

Professional Acid Etch

Acid etch for concrete (UK) · GB · manufacturer-sourced

Check your container: This countdown is for the Acid etch for concrete (UK) variant. Similar-looking versions may have different times.

How long should you leave Blackfriar Professional Acid Etch on before rinsing?

Short answer

Ready to rinse: 2–3 minutes after application.
Fully dry: 2–3 days after application.
Strippers, brighteners and surface cleaners

Prep dwell and rinse

Dwell, rinse and dry run before the next coat

  1. Apply the Acid etch for concrete (UK) and keep it wet
  2. Let it dwell for the stated time
  3. Rinse and dry before coating

This product’s stated stages Quoted at 73°F

  • Rinse2–3 minutes
  • Fully dry2–3 days

Worth noticing: Rinse at 2–3 minutes; fully dry at 2–3 days.

Common mistake: Letting a stripper dry on the surface or skipping the rinse.

Strippers, brighteners and surface cleaners

Treatment safety gate

Elapsed time is only one condition for the next action

Time alone does not clear the next step

Do not exceed a stated maximum; check material compatibility first.

Exact version
Acid etch for concrete (UK)
Intended use
concrete floors

Time the dwell

When did the product go on?

Stated times

  • Ready to rinse2–3 minutes
  • Fully dry2–3 days

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

Manufacturer website: blackfriar.co.uk

Conditions & fine print
  • Stated conditions: 73°F (23°C)
  • Times depend on temperature, humidity, film or bead thickness and airflow. Follow the current data sheet and label.
  • Region GB. Formulas can differ between countries; check your container.
  • Ready to rinse: The source gives no conditions for this time.
  • Fully dry: Hot air fans may be needed in cold weather.
  • 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 Report outdated information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
Blackfriar Professional Acid Etch
Variant
Acid etch for concrete (UK)
Region
GB
Listed use
concrete floors
Timed stages recorded
rinse ready, full dry
Source checked
2026-10-25

Documentation: Technical data sheet · Data sheet, undated

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

About this product

Where Etch IT waits 5 to 10 minutes, this sheet leaves the acid on for 2 to 3 minutes and repeats until the fizzing stops, then asks for 2 to 3 days of drying after the rinse.

Using this specific product

Blackfriar Professional Acid Etch is listed here as the Acid etch for concrete (UK) version for concrete floors. For stripping or cleaning a surface, 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 Acid etch for concrete (UK); related versions can use different timing.
  • For concrete floors, pay particular attention to surface temperature, how much coating or soil is present and keeping the product wet.
  • The source gives no conditions for this time. Hot air fans may be needed in cold weather.

How to check readiness

Check a small test patch before committing to the full dwell and rinse. Use the stated range for this formula; rinse sooner if its directions tell you to stop for irritation. The sheet says 2 to 3 days of drying will be required after rinsing.

Avoid this mistake

A longer dwell is not always better; follow the stated maximum and keep the product from drying out.

Compare with similar products

Keep going

Questions

How long should you leave this product on before rinsing?

Blackfriar states: The sheet says to leave it for 2 to 3 minutes and repeat until there is no further effervescence. Conditions: The source gives no conditions for this time.. The sheet says 2 to 3 days of drying will be required after rinsing. Conditions: Hot air fans may be needed in cold weather.. These are the manufacturer’s stated times, not a guarantee.

How long must the floor dry after rinsing Blackfriar Acid Etch?

The sheet says 2 to 3 days, and suggests hot air fans in cold weather with good ventilation.

How long until this product is fully dry?

Blackfriar states: The sheet says 2 to 3 days of drying will be required after rinsing. Conditions: Hot air fans may be needed in cold weather.. 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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