FAQ Knowledge Articles

Capping resin is how Integrity Windows refers to the color that is added to Ultrex.  It is called capping resin because it is extruded over the substrate as it is pultruded through the heated die.  As they cure together, the Ultrex and acrylic coating form a unique bond which creates a hard and durable finish. 

For more information, see:
How is the fiberglass used in your Integrity and Infinity products?
What is pultrusion?
Glossary > Pultrusion, Ultrex
Ultrex Fiberglass