Manufacturing Methods of Fiberglass Doors

Doors, doorframes, louvers and other fiberglass products come in two classes: (a) those manufactured by the form-molded gelcoat method, and (b) those which are manufactured by the pultrusion method.

Tho both methods utilize the same basic materials (resins & fiberglass), the gelcoat method is vulnerable to delamination.

Pultrusion does for conventional FRP products what extrusion does for aluminum and what vulcanization does for rubber: Causes molecules to link in a way that creates a more stable and durable product.

Research establishes that industrial-duty FRP (fiberglass) doors give longer service, deliver greater ROI and are generally kinder to the environment.

FRP (fiberglass reinforced plastic/polymer) doors and frames are immune to many chemicals. See the chart on this page for an abbreviated list of these chemicals and also for a list of questions to help select 'the best' fiberglass door for your installation.