Pre-Kote Undercoat
One-part undercoat · US · not yet reviewed
How long before you can recoat Interlux Pre-Kote Undercoat?
Short answer
Water-exposure plan
Splash, filling and continuous immersion are not equivalent
Splashes or dampness can use a different milestone.
Filling, launching or immersion requires the exact water milestone.
Use the One-part undercoat directions for boat and marine; do not infer immersion readiness from touch-dry time.
Calculate water-exposure readiness
Your countdown
Stated times
- Safe to touch1–15 hours
- Ready to sand1–2 days
- Ready for another coat4–36 hours
From Interlux data sheet · checked 2026-10-25. Anything not listed isn’t stated by the manufacturer.
Manufacturer website: yachtpaint.com
Conditions & fine print
- Stated conditions: 73°F (23°C)
- The data sheet gives times for several temperatures; the range shown runs from the warmest (95°F/35°C) to the coolest (41-50°F/5-10°C) listed. If the maximum overcoating time is exceeded, abrade with 220-320 grit wet-or-dry paper. Not suitable for permanently immersed surfaces. Do not use below 41°F (5°C).
- Temperature range: 41°F to 95°F
- Region US. Formulas can differ between countries; check your container.
- Safe to touch: Substrate temperature
- Ready to sand: Substrate temperature
- Ready for another coat: Substrate temperature
- Entered from the manufacturer source; second review pending. Report outdated information
- Actual results depend on preparation, thickness, ventilation, temperature, humidity, mixing and substrate.
Using this specific product
Interlux Pre-Kote Undercoat is listed here as the One-part undercoat version for boat and marine. 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 One-part undercoat; related versions can use different timing.
- For boat and marine, pay particular attention to substrate preparation, temperature and water exposure.
- Substrate temperature.
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. Sandable: 24 hours at 95°F and 73°F, 30 hours at 59°F, 48 hours at 41°F. 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
Launching too soon can expose an incompletely cured film continuously.
Questions
How long before you can recoat this product?
Interlux states: Touch dry: 1 hour at 95°F (35°C), 3 hours at 73°F (23°C), 6 hours at 59°F (15°C), 15 hours at 41°F (5°C). Conditions: Substrate temperature. Sandable: 24 hours at 95°F and 73°F, 30 hours at 59°F, 48 hours at 41°F. Conditions: Substrate temperature. Overcoat minimum: 4 hours at 95°F, 16 hours at 73°F, 24 hours at 59°F, 36 hours at 41°F. Maximum overcoat window runs from 1 day (95°F) to 4 days (41°F). Conditions: Substrate temperature. These are the manufacturer’s stated times, not a guarantee.
How long before I can sand this product?
Interlux states: Sandable: 24 hours at 95°F and 73°F, 30 hours at 59°F, 48 hours at 41°F. Conditions: Substrate temperature. These are the manufacturer’s stated times, not a guarantee.
How long until this product is safe to touch?
Interlux states: Touch dry: 1 hour at 95°F (35°C), 3 hours at 73°F (23°C), 6 hours at 59°F (15°C), 15 hours at 41°F (5°C). Conditions: Substrate temperature. These are the manufacturer’s stated times, not a guarantee.
What affects how long this product takes to dry or cure?
The data sheet gives times for several temperatures; the range shown runs from the warmest (95°F/35°C) to the coolest (41-50°F/5-10°C) listed. If the maximum overcoating time is exceeded, abrade with 220-320 grit wet-or-dry paper. Not suitable for permanently immersed surfaces. Do not use below 41°F (5°C). Follow the product label for your conditions.