Sigma Coatings

Sigmazinc 19

One-component zinc-rich epoxy primer · INTL · manufacturer-sourced

Check your container: This countdown is for the One-component zinc-rich epoxy primer variant. Similar-looking versions may have different times.

How long before you can recoat Sigma Coatings Sigmazinc 19?

Short answer

Ready for another coat: 2 hours after application.
Safe to touch: 4 minutes 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 One-component zinc-rich epoxy primer 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 68°F

  • Safe to touch4 minutes
  • Ready for another coat2 hours

Worth noticing: Safe to touch at 4 minutes; ready for another coat at 2 hours.

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 touch4 minutes
  • Ready for another coat2 hours

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

Manufacturer website: None

Conditions & fine print
  • Stated conditions: 68°F (20°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.
  • Apply at 14°F or above
  • Region INTL. Formulas can differ between countries; check your container.
  • Safe to touch: At 20°C, up to 35 microns dry.
  • Ready for another coat: At 20°C. The maximum is extended.
  • 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 Report outdated information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
Sigma Coatings Sigmazinc 19
Variant
One-component zinc-rich epoxy primer
Region
INTL
Listed use
touch-up, cold-weather priming, steel
Timed stages recorded
touch, recoat min
Source checked
2026-10-25

Documentation: Technical data sheet · Technical data sheet ref. 7370

Condition attached to the stated time: At 20°C, up to 35 microns dry.

About this product

A single-pack zinc primer that is touch dry in 4 minutes at 20°C and can be applied down to -10°C. The overcoat minimum rises from 2 hours at 20°C to 6 hours at -10°C.

Using this specific product

Sigma Coatings Sigmazinc 19 is listed here as the One-component zinc-rich epoxy primer version for touch-up, cold-weather priming, and steel. 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 One-component zinc-rich epoxy primer; related versions can use different timing.
  • For touch-up, cold-weather priming, and steel, pay particular attention to surface preparation, film thickness, temperature, dew point and pot life.
  • At 20°C, up to 35 microns dry. At 20°C. The maximum is extended.

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.

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?

Sigma Coatings states: The sheet gives dry to touch in 4 minutes. Conditions: At 20°C, up to 35 microns dry.. The sheet gives a minimum overcoating interval of 2 hours over two-pack epoxy. Conditions: At 20°C. The maximum is extended.. These are the manufacturer’s stated times, not a guarantee.

Can Sigmazinc 19 be applied in freezing weather?

The sheet allows application down to -10°C on a dry, ice-free surface.

How long until this product is safe to touch?

Sigma Coatings states: The sheet gives dry to touch in 4 minutes. Conditions: At 20°C, up to 35 microns dry.. 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.

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