Sigma Coatings

Sigmacover 350

High-build polyamide epoxy primer coating · INTL · manufacturer-sourced

Check your container: This countdown is for the High-build polyamide epoxy primer coating variant. Similar-looking versions may have different times.

How long before you can recoat Sigma Coatings Sigmacover 350?

Short answer

Ready for another coat: 6 hours after application.
Safe to touch: 2 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 High-build polyamide epoxy primer coating 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 touch2 hours
  • Safe to handle6 hours
  • Ready for another coat6 hours
  • Full cure7 days

Worth noticing: Touch-dry comes at 2 hours, but full cure is 7 days, about 84 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 touch2 hours
  • Safe to handle6 hours
  • Ready for another coat6 hours
  • Full cure7 days

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 41°F or above
  • Region INTL. Formulas can differ between countries; check your container.
  • Safe to touch: At 20°C, up to 150 microns dry.
  • Safe to handle: At 20°C.
  • Ready for another coat: At 20°C. The maximum is 3 months.
  • Full cure: At 20°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 Report outdated information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
Sigma Coatings Sigmacover 350
Variant
High-build polyamide epoxy primer coating
Region
INTL
Listed use
steel, cargo holds, chemical exposure
Timed stages recorded
touch, handle, recoat min, full cure
Source checked
2026-10-25

Documentation: Technical data sheet · Technical data sheet ref. 7970, 2 Nov 2020

Condition attached to the stated time: At 20°C, up to 150 microns dry.

About this product

A primer-coating whose overcoat limits depend on the exposure and the next product: 6 hours to 3 months atmospheric, but 6 hours to 21 days in cargo holds. Check which table row applies.

Using this specific product

Sigma Coatings Sigmacover 350 is listed here as the High-build polyamide epoxy primer coating version for steel, cargo holds, and chemical exposure. 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 High-build polyamide epoxy primer coating; related versions can use different timing.
  • For steel, cargo holds, and chemical exposure, pay particular attention to surface preparation, film thickness, temperature, dew point and pot life.
  • At 20°C, up to 150 microns dry. At 20°C. At 20°C. The maximum is 3 months.

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. Lift or move the item gently and avoid twisting the bond or pressing finished faces together. 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 2 hours. Conditions: At 20°C, up to 150 microns dry.. The sheet gives dry to handle in 6 hours. Conditions: At 20°C.. The sheet gives a minimum atmospheric overcoating interval of 6 hours over itself. Conditions: At 20°C. The maximum is 3 months.. The sheet gives full cure in 7 days. Conditions: At 20°C.. These are the manufacturer’s stated times, not a guarantee.

How long between coats of Sigmacover 350 in a cargo hold?

The sheet gives 6 hours to 21 days at 20°C.

How long does this product take to fully cure?

Sigma Coatings states: The sheet gives full cure in 7 days. Conditions: At 20°C.. These are the manufacturer’s stated times, not a guarantee.

How long until this product is safe to touch?

Sigma Coatings states: The sheet gives dry to touch in 2 hours. Conditions: At 20°C, up to 150 microns dry.. These are the manufacturer’s stated times, not a guarantee.

How long until this product is safe to handle?

Sigma Coatings states: The sheet gives dry to handle in 6 hours. Conditions: At 20°C.. 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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