Loctite (Henkel)

PL 300 Foamboard Construction Adhesive

Latex (VOC formula) · US · not yet reviewed

Short answer

Full cure: 7 days after application.
Working time ends: 20 minutes after application.

Start the clock

When did you apply it?
Outdoors, temperature
Where?
Thickness

Stated times

  • Working time ends20 minutes
  • Full cure7 days

From Loctite (Henkel) data sheet · checked 2026-10-24. Anything not listed isn’t stated by the manufacturer.

Conditions & fine print
  • Stated conditions: Not stated in the data sheet
  • Cure time depends on temperature, humidity, porosity and the amount used.
  • Temperature range: 40°F to 100°F
  • Region US. Formulas can differ between countries; check your container.
  • Full cure: Depends on temperature, humidity, porosity and amount used
  • Entered from the manufacturer source; second review pending. Report outdated information
  • Actual results depend on preparation, thickness, ventilation, temperature, humidity, mixing and substrate.

Questions

How long before PL 300 Foamboard Construction Adhesive is full cure?

Loctite (Henkel) states: Full cure time: 7 days. Conditions: Depends on temperature, humidity, porosity and amount used. This is the manufacturer’s stated time, not a guarantee.

How long is the working time for PL 300 Foamboard Construction Adhesive?

Loctite (Henkel) states: Working time: 20 minutes. This is the manufacturer’s stated time, not a guarantee.

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