The Duro-Last Manufacturing Process
Every Duro-Last roofing system is precision-fabricated to fit even the most complicated, uniquely-shaped rooftops. Every Duro-Last system is delivered to the job site with all components included and up to 85% of membrane seaming completed in our factory. Also, custom fabricated parapets, and stack and curb flashings eliminate the majority of labor from the most critical roof areas – transitions and changes of plane. Prefabrication enables authorized Duro-Last contractors to install faster, with less disruption and fewer callbacks.
Duro-Last's Engineering Services Department offers technical support, including CAD services, to create a roof customized to each building's specifications.
The Quality Control Lab performs a variety of standardized tests on all components of the Duro-Last roofing systems.
To ensure quality at the onset, this calender machine distributes film evenly.
Knitting machines produce a high-density polyester weft-inserted scrim.
The laminator then bonds together the top and bottom layers of the film with the scrim.
Quality control is a priority. This employee performs an inspection of a completed roofing membrane.
Rolls of membrane are re-inspected off the line.
Membrane sheets are welded together and prefabricated to a building's exact dimensions as specified by the architect, specifier or contractor.
A fastening tab is welded into the membrane sheet for attachment to the roof deck.
Orders are measured and squared-up on the folding floor.
Folding floor inspectors examine every factory seam of the Duro-Last roofing system before it leaves the manufacturing facility.
Custom-made pieces are folded from fastening tab to fastening tab, making installation easier.
Duro-Last provides custom-made accessories for all penetrations and details.
All pieces are rolled and stretch-wrapped, ready for delivery to the job site.
Duro-Last's in-house training classes provide contractors with the know-how to install the Duro-Last roofing systems.
EXCEPTIONAL® Metals' state-of-the-art equipment precisely fabricates products with consistent high-quality and provides a quick turnaround time.
Scuppers, pitch pans, and collector boxes eliminate the need for field fabrication and help increase installation efficiencies.
Our skilled craftsmen take pride in fabricating a variety of products and materials, including components made from copper, aluminum, and stainless steel.