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Arctic Seal® 401, 2-Square Roll Self Adhering Underlayment
- Mfg.#
- 11MIL4012
- Sku#
- 3898426
- Sustainable NEX® asphalt technology
- Self-adhering; waterproof
- Seals around nails
- Helps protect against leaks from ice dams and wind-driven rain
- Equally effective flashing membrane
* Estimated stock levels as of Sun, Sep 13, 2026. All items subject to prior sale. Prices may vary between stores and online. Please call ahead to confirm availability of items marked as Limited Stock.
Description
Arctic Seal® is a durable, waterproof, self-adhering underlayment made for areas of the roof most susceptible to leaks. Arctic Seal® can also be used as a high-performance, all-roof underlayment.
The ice & water barrier sits under the shingles and the underlayment to provide an extra, waterproof membrane in more leak sensitive areas like roof valleys, edges, and transitions.
Malarkey offers two ice & water barriers tailored to asphalt shingle roofs. Arctic Seal® is our most economical.
Specifications
General
| Application | Ice and Water Barrier |
|---|---|
| Collection | Arctic Seal® |
| Color | Light Blue, Gray |
| Coverage | 195 sq ft |
| Fire Rating | ASTM E108 Class A when paired with a Class A shingle |
| Material | Fiberglass, NEX® polymer modified bitumen (asphalt) |
| Perm Rating | 0.1 (U.S. perms) |
| Tear Strength | Enhanced |
| Type | Self-Adhering Underlayment |
Dimensions
| Length | 65 ft |
|---|---|
| Square Feet | 195 |
| Thickness | 65 mils |
| Weight | 60 lb |
| Width | 36 in |
Manufacturing Details
The following information is subject to change without notice
| Country of Origin | USA |
|---|---|
| Manufacturer Warranty | 10 yr Limited |
| Prop 65 Warning |
WARNING: This product can expose you to chemicals, including bitumen, which is known to the State of California to cause cancer. For more information go to: www.P65Warnings.ca.gov.
|
| Shop USA | Yes |
Label Information
| Certification, Codes, Standards | ASTM D1970, FM Approved |
|---|
Videos
Related Documents
Brochure (PDF)
Msds (PDF)
Warranty (PDF)
Installation Guide (PDF)
