Our Products & Services


Northern Illinois Seamless Roofing has been recognized as a Duro-Last® Master Elite Contractor



We install and highly recommend the complete line of Duro-Last® roofing products for all your commercial roofing projects:
 

Duro-Last® Roofing System Elite Master Contractor, Northern Illinois Seamless Roofing, Mendota, Il

Prefabricated Duro-Last® Roofing System


Duro-Last® has been the industry leader in producing custom-fabricated single-ply roofing systems, designing each roof to fit building specifications exactly, and manufacturing it under controlled factory conditions. For building owners and managers, Duro-Last®'s custom fabrication of single-ply roofing systems offers several advantages: Studies of roof failures show that most problems occur because of installation errors, particularly at changes in plane on the roof, such as projections, curbs, drains, perimeters and abutting walls.
 

Duro-Last® prefabrication eliminates up to 85% of on-site, rooftop membrane seaming, greatly reducing the likelihood of installation errors and leak problems in the future. Prefabricated roofing systems are easier to install throughout the year, even during adverse weather conditions. Installation time is reduced so the contractor can get on and off the job quickly. The relatively small amount of roof membrane seaming done in the field is completed with hot-air welding methods, which are virtually unaffected by cold or damp weather conditions. Single-ply roofing prefabrication dramatically reduces waste, both during the manufacturing process and installation. The roofing contractor orders the exact amount of roof membrane necessary for roof coverage, rather than a collection of raw materials.
 

Prefabrication also appeals to engineers and architects who would like to address a particular structural or aesthetic design problem. Panel sizes, shapes and colors can be pre-planned and prefabricated to achieve desired visual results. Finally, prefabrication allows the roofing contractor to take control of a construction operation in a highly unstable environment. Roofing contractors must plan their roofing projects carefully, and are rewarded with greater worker productivity, a higher-quality installation and more satisfied customers. In addition to being custom prefabricated, the Duro-Last® single-ply roofing system is durable, energy-efficient, installed with no disruptions, code compliant and backed by the industry's best warranties. The Duro-Last® roofing system is the best long-term investment you can make in your building.

Compare the Facts

Duro-Last® Manufacturer A Manufacturer B Manufacturer C
Membrane Type PVC TPO EPDM Modified Bitumen
Custom Prefabricated Deck Sheets? Yes No No No
Sheet Construction Factory prefabricated into panels up to 2,500 sq. ft Roll goods only. 500 sq. ft. coverage per typical roll Roll goods only. 1,000 sq. ft. coverage per typical roll Roll goods only. 100 sq. ft. coverage per typical roll
All Flashing Material Reinforced Yes No No No
Flashing Method All heat-welded Glue & heat-welded Glue Hot mopped
Curbs & Stacks Custom Prefabricated? Yes No No No
Scuppers and Parapets Custom Prefabricated? Yes No No No
Coverage For Ponding Water? Yes No. Typically voids warranty No. Typically voids warranty No. Typically voids warranty
Coverage for Consequential Damages Yes No No No
Warranty Coverage Repair or replacement Repair only Repair only Repair only
Warranty Provided At No Extra Cost? Yes No No No
 


 

                                                          CALL US TODAY FOR YOUR FREE ROOFING EVALUATION!

                                                                                         815-539-5142

Northern Illinois Seamless Roofing serves LaSalle, Bureau, Putnam, Lee, DeKalb and the surrounding counties