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420 OmniSeal Ply Safety Data Sheet
Made with our industry-leading Polymer Modified (Rubberized) Asphalt, OmniSeal® Base/Ply is our premium, self-adhering, modified asphalt sheet for low-slope commercial roofing applications.
OmniSeal® Base/Ply is a modified asphalt sheet that is used as a base sheet to create a 2-3 layer multi-ply system that meets desired performance, cost, and warranty needs.
OmniSeal® Base/Ply is constructed with our proprietary Polymer Modified (Rubberized) Asphalt, reinforced with fiberglass, to create a super strong, durable waterproof roof layer.
OmniSeal® Base/Ply is a self-adhered membrane activated by direct sunlight, radiant heat, and applied pressure. Self-adhered roofing eliminates the use of torches and burning asphalt from the installation process.
Made with proprietary Polymer Modified (Rubberized) Asphalt for exceptional weathering and extra strength, flexibility, and durability to resist damage and last longer.
Sheet is self-adhered (adhesive is activated by direct sunlight and radiant heat, and applied with pressure). Self-adhered roofing eliminates potentially dangerous fire hazards and unpleasant odors from the low slope roofing process.
Can be combined with conventional or modified asphalt sheets to create multi-layer redundancy and satisfy performance need, cost, or warranty.
Modified asphalt 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.
Naturally waterproof asphalt, built into a multi-ply system, helps resist water penetration.
Self-adhered membranes have a factory-applied split-release film that protects the adhesive and is removed during installation.
Class 4 impact-rated when used as a system, the highest rating available from Underwriters Laboratory.
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.
Class A fire rated in a system assembly over a combustible or non-combustible deck.
Application Method | Asphalt Technology | Tear Strength | Thickness | Testing Compliance | Warranties | Fire Resistance (FR) | |
---|---|---|---|---|---|---|---|
420 OmniSeal® Base/Ply
|
Self-Adhered | Polymer Modified (Rubberized) Asphalt | Enhanced | 60 mils | ASTM D1970; ASTM D4601; ASTM E108 Class A, B, & C; FM Approved; UL & Intertek Listed | up to 17 years | ASTM E108 Class A, B, & C |
Self-Adhered | NEX® | Enhanced | 65 mils | ASTM D1970; FM Approved | Up to Lifetime | ASTM E108 Class A when paired with a Class A shingle | |
Mechanically Fastened | Polymer Modified (Rubberized) Asphalt | Enhanced | 50 mils | ASTM D4601 Type II; ASTM E108 Class A, B, & C; UL & Intertek Listed | Up to 17 years | ASTM E108 Class A, B, & C | |
Hot Asphalt | Polymer Modified (Rubberized) Asphalt | Enhanced | 55 mils | ASTM D4601 Type II; ASTM E108 Class A; Intertek CCRR-0333; UL Listed; FM Approved | Up to 30 years | Yes |
420 OmniSeal® Base/Ply
|
||||
---|---|---|---|---|
Application Method |
Self-Adhered |
Self-Adhered |
Mechanically Fastened |
Hot Asphalt |
Asphalt Technology |
Polymer Modified (Rubberized) Asphalt |
NEX® |
Polymer Modified (Rubberized) Asphalt |
Polymer Modified (Rubberized) Asphalt |
Tear Strength |
Enhanced |
Enhanced |
Enhanced |
Enhanced |
Thickness |
60 mils |
65 mils |
50 mils |
55 mils |
Testing Compliance |
ASTM D1970; ASTM D4601; ASTM E108 Class A, B, & C; FM Approved; UL & Intertek Listed |
ASTM D1970; FM Approved |
ASTM D4601 Type II; ASTM E108 Class A, B, & C; UL & Intertek Listed |
ASTM D4601 Type II; ASTM E108 Class A; Intertek CCRR-0333; UL Listed; FM Approved |
Warranties |
up to 17 years |
Up to Lifetime |
Up to 17 years |
Up to 30 years |
Fire Resistance (FR) |
ASTM E108 Class A, B, & C |
ASTM E108 Class A when paired with a Class A shingle |
ASTM E108 Class A, B, & C |
Yes |
SKU: 420
L: 66′
W: 39-3/8″
SQ/Roll: 2
Thickness: 60 mils nominal
ASTM D1970
ASTM D4601
ASTM E108 Class A, B, & C
UL & Intertek Listed
FM Approved
SQ/Roll: 2
Rolls/Pallet: 20
Rolls/Truckload: 600
420 OmniSeal Ply Safety Data Sheet
420 OmniSeal Ply Tech Data
Instrucciones de Instalación del Sistema de Techumbre OmniSeal (Español)
Instructions de Pose de Système OmniSeal pour Toiture (Francais)
OmniSeal System Flyer
OmniSeal System Installation Guide
Product Data Guide
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.
Compare Products
Application Method | Asphalt Technology | Tear Strength | Thickness | Testing Compliance | Warranties | Fire Resistance (FR) | |
---|---|---|---|---|---|---|---|
420 OmniSeal® Base/Ply
|
Self-Adhered | Polymer Modified (Rubberized) Asphalt | Enhanced | 60 mils | ASTM D1970; ASTM D4601; ASTM E108 Class A, B, & C; FM Approved; UL & Intertek Listed | up to 17 years | ASTM E108 Class A, B, & C |
Self-Adhered | NEX® | Enhanced | 65 mils | ASTM D1970; FM Approved | Up to Lifetime | ASTM E108 Class A when paired with a Class A shingle | |
Mechanically Fastened | Polymer Modified (Rubberized) Asphalt | Enhanced | 50 mils | ASTM D4601 Type II; ASTM E108 Class A, B, & C; UL & Intertek Listed | Up to 17 years | ASTM E108 Class A, B, & C | |
Hot Asphalt | Polymer Modified (Rubberized) Asphalt | Enhanced | 55 mils | ASTM D4601 Type II; ASTM E108 Class A; Intertek CCRR-0333; UL Listed; FM Approved | Up to 30 years | Yes |
420 OmniSeal® Base/Ply
|
||||
---|---|---|---|---|
Application Method |
Self-Adhered |
Self-Adhered |
Mechanically Fastened |
Hot Asphalt |
Asphalt Technology |
Polymer Modified (Rubberized) Asphalt |
NEX® |
Polymer Modified (Rubberized) Asphalt |
Polymer Modified (Rubberized) Asphalt |
Tear Strength |
Enhanced |
Enhanced |
Enhanced |
Enhanced |
Thickness |
60 mils |
65 mils |
50 mils |
55 mils |
Testing Compliance |
ASTM D1970; ASTM D4601; ASTM E108 Class A, B, & C; FM Approved; UL & Intertek Listed |
ASTM D1970; FM Approved |
ASTM D4601 Type II; ASTM E108 Class A, B, & C; UL & Intertek Listed |
ASTM D4601 Type II; ASTM E108 Class A; Intertek CCRR-0333; UL Listed; FM Approved |
Warranties |
up to 17 years |
Up to Lifetime |
Up to 17 years |
Up to 30 years |
Fire Resistance (FR) |
ASTM E108 Class A, B, & C |
ASTM E108 Class A when paired with a Class A shingle |
ASTM E108 Class A, B, & C |
Yes |
Specifications & Testing
SKU: 420
L: 66′
W: 39-3/8″
SQ/Roll: 2
Thickness: 60 mils nominal
ASTM D1970
ASTM D4601
ASTM E108 Class A, B, & C
UL & Intertek Listed
FM Approved
SQ/Roll: 2
Rolls/Pallet: 20
Rolls/Truckload: 600
Documents & Resources
420 OmniSeal Ply Safety Data Sheet
420 OmniSeal Ply Tech Data
Instrucciones de Instalación del Sistema de Techumbre OmniSeal (Español)
Instructions de Pose de Système OmniSeal pour Toiture (Francais)
OmniSeal System Flyer
OmniSeal System Installation Guide
Product Data Guide
Warranty Information
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.