Jotun

Jotamastic SF

Two-component epoxy mastic, standard and winter grades · INTL · manufacturer-sourced

Check your container: This countdown is for the Two-component epoxy mastic, standard and winter grades variant. Similar-looking versions may have different times.

How long before you can recoat Jotun Jotamastic SF?

Short answer

Ready for another coat: 630 minutes after application.
Safe to touch: 5 hours after application.
Industrial protective coatings

Film-build schedule

Recoat has a floor and a ceiling, and film thickness moves both

  1. Prepare the surface and apply the Two-component epoxy mastic, standard and winter grades to the stated thickness
  2. Recoat inside the window the data sheet gives
  3. Return to service only at the stated cure

This product’s stated stages Quoted at 73°F

  • Safe to touch5 hours
  • Ready for another coat10 hours 30 min
  • Full cure7 days

Worth noticing: Touch-dry comes at 5 hours, but full cure is 7 days, about 34 times longer.

Common mistake: Recoating after the maximum window has closed; the next coat may not bond without abrading.

Check the recoat window

When did this coat go on?
Conditions that affect drying
Where?
Thickness

Stated times

  • Safe to touch5 hours
  • Ready for another coat630 minutes
  • Full cure7 days

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

Manufacturer website: industrialcoatingsltd.com

Conditions & fine print
  • Stated conditions: 73°F (23°C)
  • Protective-coating times are for the stated film thickness, temperature and humidity. Cold steel, thick films and poor airflow lengthen them. Follow the current data sheet.
  • Region INTL. Formulas can differ between countries; check your container.
  • Safe to touch: At 23°C substrate. The sheet's table text is scrambled, so values were matched by order.
  • Ready for another coat: At 23°C substrate.
  • Full cure: At 23°C substrate. It is 28 days at 10°C.
  • 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 Report outdated information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
Jotun Jotamastic SF
Variant
Two-component epoxy mastic, standard and winter grades
Region
INTL
Listed use
steel mastic, maintenance, low-surface-prep
Timed stages recorded
touch, recoat min, full cure
Source checked
2026-10-25

Documentation: Technical data sheet · Technical data sheet (NGCG copy)

Condition attached to the stated time: At 23°C substrate. The sheet's table text is scrambled, so values were matched by order.

About this product

A mastic with a standard and a winter grade, where cold changes the numbers a lot: 7 days to cure at 23°C against 28 days at 10°C. Pot life is 1 hour at 23°C.

Using this specific product

Jotun Jotamastic SF is listed here as the Two-component epoxy mastic, standard and winter grades version for steel mastic, maintenance, and low-surface-prep. For coating steel or industrial surfaces, 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 Two-component epoxy mastic, standard and winter grades; related versions can use different timing.
  • For steel mastic, maintenance, and low-surface-prep, pay particular attention to surface preparation, film thickness, temperature, dew point and pot life.
  • At 23°C substrate. The sheet's table text is scrambled, so values were matched by order. At 23°C substrate. At 23°C substrate. It is 28 days at 10°C.

How to check readiness

Check dry film thickness and the recoat window before the next coat. Touch only a hidden edge first; a dry surface can conceal a soft layer underneath. Before recoating, confirm the first coat matches the manufacturer’s stated condition; if the maximum window passed, check whether sanding is required. Reserve full cure for demanding use, chemicals, washing, immersion or load—not merely gentle handling.

Avoid this mistake

Recoat windows can close; past the maximum, abrading is usually required.

Compare with similar products

Keep going

Questions

How long before you can recoat this product?

Jotun states: The sheet gives surface dry in 5 hours for the standard grade. Conditions: At 23°C substrate. The sheet's table text is scrambled, so values were matched by order.. The sheet gives dry to overcoat in 10.5 hours at minimum for the standard grade. Conditions: At 23°C substrate.. The sheet gives dried and cured for service in 7 days for the standard grade. Conditions: At 23°C substrate. It is 28 days at 10°C.. These are the manufacturer’s stated times, not a guarantee.

How long does Jotamastic SF take to cure at 10°C?

The sheet gives 28 days for the standard grade at 10°C.

How long does this product take to fully cure?

Jotun states: The sheet gives dried and cured for service in 7 days for the standard grade. Conditions: At 23°C substrate. It is 28 days at 10°C.. These are the manufacturer’s stated times, not a guarantee.

How long until this product is safe to touch?

Jotun states: The sheet gives surface dry in 5 hours for the standard grade. Conditions: At 23°C substrate. The sheet's table text is scrambled, so values were matched by order.. These are the manufacturer’s stated times, not a guarantee.

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

Protective-coating times are for the stated film thickness, temperature and humidity. Cold steel, thick films and poor airflow lengthen them. Follow the current data sheet. Follow the product label for your conditions.

Similar products

All industrial protective coatings