Why We Use Duro-Last®


         Precision-fabricated, Watertight Protection for Flat Roofs and Low-Sloped Roofs

Duro-Last® Building


The Duro-Last® single-ply flat roofing system is ideal for any low sloped or flat roof design. Since 1978, over
a billion square feet of Duro-Last® membrane have been installed on buildings of all types. The Duro-Last® roofing system is:
 

Precision-fabricated to fit your building's low-sloped or flat roof. Every Duro-Last® roof is manufactured to exact size in our controlled factory environment. This eliminates up to 85% of rooftop installation seaming and ensures an excellent fit, delivering worry-free, leak-proof, long-term protection for any low-sloped or flat roof design.
 

Energy efficient. The Duro-Last® white membrane has the highest retained reflectivity of any single-ply membrane rated by the EPA's ENERGY STAR® Roof Products Program, saving significant energy and money for facilities with low-sloped and flat roofs throughout North America.
 

Durable. The Duro-Last® roofing system is resistant to fire, chemicals, grease, high winds, and punctures, and easily accommodates wide temperature extremes. Installed by authorized contractors. A Duro-Last® installation on your building's low-sloped or flat roof is quiet and safe, without loud machinery, hazardous materials, noxious fumes, hot tar or mess. A new Duro-Last® roofing system often can be installed over an existing roof without an expensive tear-off.
 

Backed by the 15-year or 20-year full warranties for low-sloped or flat roofs. Duro-Last® protects the commercial and industrial building owner with either a 15-year full warranty or a 20-year full warranty. Both warranties are transferable, and both provide maximum protection. Our standard warranty includes coverage for consequential damages that result from defects in the Duro-Last® material and/or installation.
 

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
 

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