Henry

Aquatac Primer

Primer · US · manufacturer-sourced

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

How long does Henry Aquatac Primer take to dry?

Short answer

Tack-free: 30 minutes after application.
Fully dry: 2 hours after application.
Roof coatings and roofing sealants

Weather-window plan

Rain-ready comes long before fully cured

  1. Apply the Primer to a dry, clean roof surface
  2. Keep rain off for the stated period
  3. Allow foot traffic only at the stated time

This product’s stated stages Quoted at 75°F and 50% humidity

  • Tack-free30 minutes
  • Fully dry2 hours

Worth noticing: Tack-free at 30 minutes; fully dry at 2 hours.

Common mistake: Starting a coat when the afternoon forecast turns wet.

Roof coatings and roofing sealants

Coat timeline

Plan the next coat and final use separately

  1. 1
    ApplyUse the Primer directions and prepare for primer.
  2. 2
    Next coatUse the listed recoat milestone; do not substitute touch-dry time.
  3. 3
    Normal useWait for the applicable handling, water or cure milestone.

Plan around the weather

When did you apply the coating?
Conditions that affect drying
Where?
Thickness

Stated times

  • Tack-free30 minutes
  • Fully dry2 hours

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

Manufacturer website: henry.com

Conditions & fine print
  • Stated conditions: 75°F (24°C) and 50% relative humidity
  • Times depend on temperature, humidity, film or bead thickness and airflow. Follow the current data sheet and label.
  • Apply at 25°F or above
  • Region US. Formulas can differ between countries; check your container.
  • Tack-free: At 75°F (24°C).
  • Fully dry: At 75°F (23°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 Report outdated information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
Henry Aquatac Primer
Variant
Primer
Region
US
Listed use
primer
Timed stages recorded
tack free, full dry
Source checked
2026-10-25

Documentation: Technical data sheet · Dated 06/03/25

Condition attached to the stated time: At 75°F (24°C).

About this product

A primer with a 30 minute initial set and 2 hour dry through, and a cold-weather floor of 25°F. The sheet says to re-coat any areas left exposed overnight or longer, a rule that catches crews who prime ahead of the membrane.

Using this specific product

Henry Aquatac Primer is listed here as the Primer version for primer. For coating or sealing a roof, 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 Primer; related versions can use different timing.
  • For primer, pay particular attention to roof temperature, dew, rain in the forecast, film thickness and how many coats are needed.
  • At 75°F (24°C). At 75°F (23°C) and 50% relative humidity.

How to check readiness

Check that the surface is dry and that no rain or dew is forecast inside the stated window. The data sheet gives an initial set of 30 minutes. The data sheet gives a dry-through time of 2 hours.

Avoid this mistake

Rain resistance and walkable are earlier milestones than the full cure the roof system is rated for.

Compare with similar products

Keep going

Questions

How long does this product take to dry?

Henry states: The data sheet gives an initial set of 30 minutes. Conditions: At 75°F (24°C).. The data sheet gives a dry-through time of 2 hours. Conditions: At 75°F (23°C) and 50% relative humidity.. These are the manufacturer’s stated times, not a guarantee.

What if Aquatac Primer is left overnight before the membrane goes on?

The sheet says to re-coat any areas left exposed overnight or longer.

How long until this product is fully dry?

Henry states: The data sheet gives a dry-through time of 2 hours. Conditions: At 75°F (23°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?

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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