Adhesive For Phenolic Foam Insulation Board

This glue specially designed for phenolic insulation board has excellent bonding performance and weather resistance, and can play a key role in the bonding of insulation materials. Whether in building exterior insulation, roof insulation or other applications, our phenolic insulation board glues ensure a strong and secure connection, providing a reliable solution for your project.

Foam-Board Lamination

A two-component, solvent-free polyurethane adhesive (PU-50, A:B = 5:1) for bonding phenolic, XPS and EPS foam insulation boards to metal or board facings. Solvent-free (≥99% solids) for low odour and dimensional stability, it cures at room temperature to a strong, weather-resistant bond — the peel test fails the board, not the glue line.

Why this adhesive

Made for foam boards

Bonds phenolic, XPS, EPS and PIR insulation boards without attacking the foam — solvent-free, ≥99% solids.

Board fails before the glue

On peel the non-metal board substrate fails first — the adhesive line is stronger than the board.

Weather-resistant, RT cure

Cures at room temperature; weather- and ageing-resistant for exterior insulation, roof and wall panels.

What it bonds

Phenolic foam boardXPS & EPS boardPIR boardMetal / board facingsExterior wall / roof insulation

For building exterior insulation, roof and wall insulation panels, and insulated sandwich panels. See the full XPS & EPS / foam-board adhesive guide.

Technical Parameters

Type PU-50 two-component, solvent-free polyurethane
Appearance A: white viscous liquid  |  B: dark brown liquid
Viscosity (25°C) A: 9000 ± 50  |  B: 2100 ± 20 mPa·s
Mixing ratio A : B = 5 : 1 (by weight)
Density 1.30 ± 0.11 g/cm³
Solid content ≥99% (solvent-free)
Pot life (mixed) < 15 min
Coating weight 150 – 300 g/m²
Cure Room temperature (time varies with temperature)
Packaging A: 25 kg iron drum  |  B: 5 kg plastic drum (5:1)

How to use

  1. Make sure the board and facing are clean, dry and dust-free.
  2. Mix A : B = 5 : 1 by weight and stir until uniform (do not estimate the ratio).
  3. Apply 150–300 g/m² to the facing, lay the foam board on and press — work within the <15 min pot life.
  4. Let cure at room temperature before handling.

Manufacturer-direct & OEM

PUGLUE is a polyurethane adhesive manufacturer — free samples, full TDS and OEM/private-label supply. Related: XPS & EPS board adhesive · SIP & sandwich panel adhesive · request a quote.

FAQ

Will it attack the foam board?

No — it is solvent-free (≥99% solids), so it bonds phenolic, XPS, EPS and PIR boards without melting or shrinking the foam.

What is the mixing ratio?

A : B = 5 : 1 by weight (do not estimate). Pot life is under 15 minutes once mixed, so apply promptly at 150–300 g/m².

How strong is the bond?

On a peel test the non-metal board substrate fails before the glue line — the bond is stronger than the foam board itself.

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