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 1/4″ 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 20 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 20 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. Contact your roofer, local distribution center or Malarkey’s Technical Services Department for full details.

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 20 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 20 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. Contact your roofer, local distribution center or Malarkey’s Technical Services Department for full details.

Warranties