Commercial

DuoStik™ System

Easy-to-Install, Self-Adhered Roof System

The DuoStik™ System is an easy-to-install, low slope roofing system for roofs greater than ¼” to less than 4:12″. It utilizes two key components: Arctic Seal® and 430 OmniSeal™ Cap sheet. This system provides a cost-effective solution for the low slope portion of your home or commercial building.

System Simplicity

The DuoStik™ System provide waterproof reliability in a simple, easy-to-install, self-adhered two-ply system. Made with NEX® Polymer Modified Asphalt, both Arctic Seal® and the 430 OmniSeal™ Cap sheet deliver unparalleled durability.

Arctic Seal®

Artic Seal® is a durable, waterproof, self-adhering underlayment made for the areas of the roof most susceptible to leaks. Arctic Seal® can also be used as a high-performance, all-roof underlayment. Made with our proprietary NEX® Polymer Modified Asphalt for extra strength and durability, Artic Seal® provides an extra layer of leak protection in more critical areas like roof valleys, roof edges, and roof-to-sidewall transitions where rain, snow, and ice are more apt to accumulate.

Arctic Seal®

430 Omniseal™ Cap

Omniseal™ Cap is our premium, self-adhering, modified asphalt cap sheet for low-slope commercial and residential roofing applications. Omniseal™ Cap is available in several colors to match our shingles.

430 OmniSeal™ Cap

Key Features

Modified Asphalt

Made with proprietary NEX® Polymer Modified Asphalt for exceptional weathering and extra strength, flexibility, and durability to resist damage and last longer.

Multi-ply System

Can be combined with conventional or modified asphalt sheets to create multi-layer redundancy and satisfy performance need, cost, or warranty.

Strong & Durable

Modified asphalt sheets are constructed with a sand and/or polypropylene surface to improve walkability and safety, and an underside of aggressive, asphalt-based adhesive to ensure adhesion. The sheets are reinforced with rubber and plastic polymers on a non-woven fiberglass mat.

 

Combined with other sheets for redundancy, modified asphalt delivers greater tear strength than conventional built-up roofing membranes for extreme, lasting durability. Up to 240 mils thick in a 3-ply system, 6X thicker than common single ply roofing systems.

Waterproof System

Naturally waterproof asphalt, built into a multi-ply system, helps resist water penetration.

Impact Resistant

Class 4 impact-rated when used as a system, the highest rating available from Underwriters Laboratory.

Enhanced Warranty

Enhanced warranties are available when product is used in a complete roofing system of Malarkey shingles and accessories, and installed by a Malarkey Certified Contractor.

Fire Resistance [FR]

Class A fire rated in a system assembly over a combustible or non-combustible deck.

Advanced Adhesion

Among industry’s highest adhesion uplift rating for greater confidence sheet will remain securely in place after installation.

Product Details

  Adhesion Rating Slip Resistance Flexibility Tear Strength* Temperature Rating Permeability Meets ASTM D1970 UV Stability Application Method Asphalt Technology Thickness Testing Compliance Warranties+ Fire Resistance (FR)
Self-Adhered NEX® Enhanced 55 mils ASTM D1970; FM Approved Up to Lifetime ASTM E108 Class A when paired with a Class A shingle
Self-Adhered NEX® Enhanced 115 mils ASTM D3909; ASTM D7530; ASTM E108 Class B & C; UL 2218 Class 4; Intertek Listed Up to 25 years ASTM E108 Class B & C
 
Application Method

Self-Adhered

Self-Adhered

Asphalt Technology

NEX®

NEX®

Tear Strength*

Enhanced

Enhanced

Thickness

55 mils

115 mils

Testing Compliance

ASTM D1970; FM Approved

ASTM D3909; ASTM D7530; ASTM E108 Class B & C; UL 2218 Class 4; Intertek Listed

Warranties+

Up to Lifetime

Up to 25 years

Fire Resistance (FR)

ASTM E108 Class A when paired with a Class A shingle

ASTM E108 Class B & C

PDF Documents

Warranty

Malarkey Roofing Products® offers various warranties to meet specific requirements. The warranty packages available for systems using 401 Arctic Seal® and 430 Omniseal™ Cap include 10, 15, 20, 25, and 30-year limited and unlimited coverage. Contact Malarkey’s Technical Services Department for approval of roof systems.

Warranties

Compare Products

  Adhesion Rating Slip Resistance Flexibility Tear Strength* Temperature Rating Permeability Meets ASTM D1970 UV Stability Application Method Asphalt Technology Thickness Testing Compliance Warranties+ Fire Resistance (FR)
Self-Adhered NEX® Enhanced 55 mils ASTM D1970; FM Approved Up to Lifetime ASTM E108 Class A when paired with a Class A shingle
Self-Adhered NEX® Enhanced 115 mils ASTM D3909; ASTM D7530; ASTM E108 Class B & C; UL 2218 Class 4; Intertek Listed Up to 25 years ASTM E108 Class B & C
 
Application Method

Self-Adhered

Self-Adhered

Asphalt Technology

NEX®

NEX®

Tear Strength*

Enhanced

Enhanced

Thickness

55 mils

115 mils

Testing Compliance

ASTM D1970; FM Approved

ASTM D3909; ASTM D7530; ASTM E108 Class B & C; UL 2218 Class 4; Intertek Listed

Warranties+

Up to Lifetime

Up to 25 years

Fire Resistance (FR)

ASTM E108 Class A when paired with a Class A shingle

ASTM E108 Class B & C

Documents & Resources

PDF Documents

Warranty Information

Warranty

Malarkey Roofing Products® offers various warranties to meet specific requirements. The warranty packages available for systems using 401 Arctic Seal® and 430 Omniseal™ Cap include 10, 15, 20, 25, and 30-year limited and unlimited coverage. Contact Malarkey’s Technical Services Department for approval of roof systems.

Warranties