Interlux

Fiberglass Bottomkote NT

Antifouling · US · manufacturer-sourced

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

How long before you can recoat Interlux Fiberglass Bottomkote NT?

Short answer

Ready for another coat: 2 hours after application.
Safe to touch: 1 hour after application.
Marine & RV

Launch-ready plan

Weatherproof, in-water and underway are different dates

  1. Prepare and apply the Antifouling
  2. Keep it dry for the stated time
  3. Launch or use only after the stated cure

This product’s stated stages Quoted at 77°F

  • Safe to touch1 hour
  • Ready for another coat2 hours
  • Immersion-ready6 hours

Worth noticing: Safe to touch at 1 hour; immersion-ready at 6 hours.

Common mistake: Launching on the first dry day; most marine products need the immersion time stated.

Marine & RV

Water-exposure plan

Splash, filling and continuous immersion are not equivalent

Brief moisture

Splashes or dampness can use a different milestone.

Continuous water

Filling, launching or immersion requires the exact water milestone.

Use the Antifouling directions for bottom paint, antifouling, and fiberglass hull; do not infer immersion readiness from touch-dry time.

Time the marine cure

When was the work done?
Conditions that affect drying
Where?
Thickness

Stated times

  • Safe to touch1 hour
  • Ready for another coat2 hours
  • Immersion-ready6 hours

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

Manufacturer website: interlux.com

Conditions & fine print
  • Stated conditions: 77°F (25°C)
  • Drying, recoat and launch times change with temperature, humidity and film thickness. Follow the current data sheet and label for your boat and climate. The overcoat row on the data sheet lists the values with the word 'ext' and does not split minimum from maximum, so confirm with the manufacturer if you need a recoat limit.
  • Region US. Formulas can differ between countries; check your container.
  • Safe to touch: At 77°F (25°C).
  • Ready for another coat: At 77°F (25°C).
  • Immersion-ready: At 77°F (25°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 Report outdated information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
Interlux Fiberglass Bottomkote NT
Variant
Antifouling
Region
US
Listed use
bottom paint, antifouling, fiberglass hull
Timed stages recorded
touch, recoat min, immersion
Source checked
2026-10-25

Documentation: Technical data sheet · Ref 4463, issued 12/15/2014

Condition attached to the stated time: At 77°F (25°C).

About this product

An antifouling formulated for fiberglass hulls. The data sheet pairs a 6 hour wait before immersion at 77°F with a 60 day maximum, and shows the overcoat time only as an extended period.

Using this specific product

Interlux Fiberglass Bottomkote NT is listed here as the Antifouling version for bottom paint, antifouling, and fiberglass hull. For repairing marine or RV equipment, 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 Antifouling; related versions can use different timing.
  • For bottom paint, antifouling, and fiberglass hull, pay particular attention to substrate preparation, temperature and water exposure.
  • At 77°F (25°C).

How to check readiness

Check the immersion or launch milestone—not just touch-dry time. 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. Continuous immersion is more demanding than splashes; wait for the specific immersion milestone.

Avoid this mistake

Launching too soon can expose an incompletely cured film continuously.

Compare with similar products

Keep going

Questions

How long before you can recoat this product?

Interlux states: The data sheet gives a touch-dry time of 1 hour. Conditions: At 77°F (25°C).. The data sheet gives 2 hours before overcoating, listed as an extended overcoating period. Conditions: At 77°F (25°C).. The data sheet gives 6 hours before immersion, and a 60 day maximum for immersion. Conditions: At 77°F (25°C).. These are the manufacturer’s stated times, not a guarantee.

What does the 60 day maximum on Fiberglass Bottomkote NT mean?

The data sheet gives 60 days as the maximum time for immersion after painting. The minimum is 12 hours at 50°F, 10 hours at 59°F, 6 hours at 77°F and 3 hours at 95°F.

How long before this product can be immersed in water?

Interlux states: The data sheet gives 6 hours before immersion, and a 60 day maximum for immersion. Conditions: At 77°F (25°C).. These are the manufacturer’s stated times, not a guarantee.

How long until this product is safe to touch?

Interlux states: The data sheet gives a touch-dry time of 1 hour. Conditions: At 77°F (25°C).. These are the manufacturer’s stated times, not a guarantee.

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

Drying, recoat and launch times change with temperature, humidity and film thickness. Follow the current data sheet and label for your boat and climate. The overcoat row on the data sheet lists the values with the word 'ext' and does not split minimum from maximum, so confirm with the manufacturer if you need a recoat limit. Follow the product label for your conditions.