Commercial Building Envelope Systems Representatives


Commercial Building Envelopes… We’ve Got You Covered.

Since 2014, SJ Mallein and Associates has grown to be a premier representative of commercial building envelope systems. Our representation of leading manufacturers of commercial building envelope systems includes Firestone Building Products, Firestone Metal Products, Gaco, GenFlex Roofing Systems, SkyScape Vegetative Roof Systems, SunWave Skylights, Georgia-Pacific DensDeck Roof Board, Westile Pavers , Metal-Era edge and coping systems, Rooftop Anchor safety systems, Firestone Enverge wall products, Georgia-Pacific DensElement exterior WRB-AB sheathing and PROSOCO R-Guard fluid-applied air and water-resistive barriers.

In our alliance with these exterior construction product and system manufacturers, we are sales representatives and market development specialists that provide comprehensive technical solutions and design options for architects and design professionals, contractors and building owners.

SJ Mallein represents all listed product lines in the greater Chicago area, as well as Westile Pavers in Iowa and DensElement and PROSOCO in Wisconsin.

SJ Mallein and Associates represents top-tier manufacturers and provides timely, flexible, and responsible solutions for your building envelope needs.

Roof Products & Systems

Firestone Building Products is a leading manufacturer of building envelope materials touting a “roots to rooftops” approach. With the largest line of roof systems and accessories, metal roofs, vegetative roof systems and daylighting, Firestone BP can provide a tailored solution for any project. Visit

For 30 years Genflex has produced a comprehensive line of single-ply roofing systems and accessories, including the latest advanced self-adhered membrane technologies, along with a full line of TPO, EPDM, PolyISO and accessories. Visit

Metal-Era provides exceptional fabrication and service for any roof edge metal need. Their full line of ES-1 compliant systems gives owners, contractors and designers security and performance. Visit

GP manufactures gypsum-based roof boards that combine industry-leading code approvals with ease of application. DensDeck roof boards are a great addition to any roofing system, providing industry-leading fire, impact and traffic protection. Visit

Westile is an industry leader providing ballast and plaza paver options for your rooftop environments. Westile offers a full line of concrete, hardwood and porcelain pavers, as well as, adjustable pedestals. Visit

Rooftop Anchor provides a full line of engineered fall protection systems including anchors, rail systems, lifeline systems, davits and guard rails. Rooftop Anchor not only manufactures, they also provide installation services for their products. Visit

Gaco was founded in 1955 with its roots in technology and product innovation. The Gaco family of brands offer best-of-class solutions for a variety of commerical, industrial, and residential applications including silicone coatings for roofs, pedestrian and traffic deckings, and waterproofing applications. Visit

Wall Products & Systems

Georgia-Pacific DensElement

DensElement Sheathing has a WRB-AB integrated right into its gypsum core. This eliminates the need to install a WRB-AB membrane separately over the face of a commercial or residential building’s sheathing, offering quality and cost benefits. This premium, all-in-one Dens brand system is then finished with PROSOCO R-Guard FastFlash liquid flashing to fill and seal joints, fasteners, openings, penetrations and transitions. Visit

PROSOCO R-Guard is a fluid-applied air and water-resistive barrier that stops air and water leakage through different wall substrate materials, rough openings, sheathing seams and materials transitions, making your building air-tight and keeping the exterior walls dry. An air-tight building is an energy efficient building and stopping moisture from invading the wall cavity is vital for preventing mold and degradation. Visit

Gaco offers exceptional spray foam products backed by the very best technical expertise in the industry. Gaco SprayFoam open and closed cell polyurethane foam is designed specifically for injection into empty cavities in commercial applications. Gaco SprayFoam features high R-value and seamless air barrier and can help reduce energy costs by up to 40%. Visit

Firestone Enverge is a line of wall products that offer many solutions within the wall cavity, including EPDM thru-wall flashings and self-adhered air and vapor barriers that help prevent moisture from entering your building. Firestone’s line of foil and glass-faced ISO boards is one of the best insulating products on the market and offers continuous insulating options for the building owner. Visit

Give us a call or e-mail us for all your commercial roofing needs.

Office: 630-570-0301
Fax: 630-861-6056

S.J. Mallein Co., Inc.
1919 S. Highland Ave., Suite 140-D
Lombard, IL 60148

Steve Mallein — Principal •

Ryan Schultz — Principal •

Dave Good — Outside Sales/Account Manager •

Angelo Peritore — Tapered Design •

Kim Kwasiborski — CSR/Office Manager •

Michelle Wright — CSR •

Bill Cohen — Architectural Wall Specialist •

Paul Fogarty — Architectural Roofing Specialist •