ISO Resin (P-17)

$21.95 $0.00( / )
  • Quick wet out
  • High strength and corrosive resistance
  • Room temperature cure with MEKP catalyst
  • Superior to ortho laminating resins
  • Cures with a surface tack
  • Good adhesion to gel coats
  • Thixotropic
  • Quart
  • Gallon
  • 4 Gallons
  • Drum
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This ISO (isophthalic) polyester laminating resin is meant for small to large fiberglass projects.  It is a superior grade polyester laminating resin.  ISO resin has higher heat distortion, greater impermeability to moisture and better corrosion resistance than ortho resin. It also has a better tensile strength. ISO resin is thixotropic and is viscous enough for fast wet out of fiberglass.  It cures with a surface tack which creates better bonding between layers.  This surface tack makes it unnecessary to sand between layers.  Polyester resin is pre-promoted for curing at room temperature with the addition of MEKP (methyl ethyl ketone peroxide) catalyst. Catalyst is sold separately.


-Mold fabrication

-Yacht/Boat construction

-Manufactured parts

-Spray up process

-Hand Lay-up Process


-Work in a well ventilated area.

-Use ISO resin at room temperature.

-MEKP catalyst should be used between 1-2% based on volume of the resin.

-Apply with a brush, spreader or fiberglass roller.

-Sanding is not necessary between layers. A polyester finishing resin can be used on the final layer to achieve a tack-free surface. 


-Store in a cool, dry area away from sunlight or heat sources.  Make sure the containers are closed up tight.

Clean Up-

Uncured polyester resin can be removed from equipment and tools using acetone. Polyester resin should be disposed of in accordance with local, state and federal regulations for hazardous waste.


Sold in Quart, Gallon, 5 Gallon and Drums.  Call For pricing of drums.

Prop65 Warning Icon WARNING: This product can expose you to chemicals including Styrene which is known to the State of California to cause cancer. For more information go to



Quart, Gallon, 4 Gallons, Drum