w40 main

ARK-W40

ARK-W40 is a high-performance insulation facing engineered for industrial and commercial applications requiring enhanced thermal, moisture, and fire protection. Its multi-layer structure—polyester film, reinforced fiberglass scrim, and metallized polyester backing—offers excellent dimensional stability, high reflectivity, and superior resistance to heat and flame compared to standard PSK or foil facings. This construction ensures long-lasting durability during installation and in demanding environments, making it suitable for use with various insulation systems.

Key Advantages:

  • Superior fire resistance with enhanced flame-retardant performance
  • High-temperature stability, maintaining mechanical strength under heat
  • Metallized polyester provides excellent moisture barrier and thermal reflectivity
  • Fiberglass scrim reinforcement delivers high tear and puncture resistance
  • Ideal for industrial and commercial walls, roofs, and HVAC insulation
  • Lightweight and easy to cut, handle, and install
  • Solvent-free and free of harmful emissions
Download Brochure

Customization

Arkint is a R&D Type factory, we welcome customers to work with us to develop your new products.
PropertyValueTesting Method
Basis Weight16 lbs/1000 ft2 (80 g/m2)Scale
Permeance (WVTR)0.02 perm (1.15 ng/Ns)ASTME96/ProcedureA
Tensile StrengthMD: 40 lbs/inch (7.0 kN/m)
XD: 31 lbs/inch (5.4 kN/m)		ASTM D828
Thickness0.006 inch (155 micron)Micrometer Caliper
Fire RatingClass BASTM E84
Accelerated AgingNo Corrosion
No Delamination		ASTM C1258 30 Days at 95% RH 120°F (49°C)
Low Temperature ResistanceRemains Flexible
No Delamination		ASTM D1263 4 Hours at -20°F (-29°C)
High Temperature ResistanceRemains Flexible
No Delamination		ASTM C1263 Modified 4 Hours at 240°F (116°C)
Water ImmersionNo Delamination24 Hours at 73°F (23°C)
Dimensional Stability0.25%ASTM D1204
Light Reflectance85%ASTM C523

Available Dimension:

Width:

  • 4-6.5 inch (1.2-2 m)

Length:

  • Customizable