Core Plus
Introducing M‑Armor™ Core Plus – the ultimate high‑performance roofing underlayment engineered for maximum strength, coverage, and versatility. With a rugged 17 MIL thickness, it delivers unmatched durability while remaining lightweight and easy to install. Perfect for use under asphalt shingles, metal, slate, and concrete & clay tiles, it’s built to protect your roof in even the toughest conditions. Backed by a 40‑year limited warranty, M‑Armor™ Core Plus combines industry‑leading strength with advanced safety and weather‑resistant features to keep your project covered from start to finish.
PRODUCT FEATURES:
-
17 MIL thickness – a 10‑square roll weighs only 37 lbs for easier handling
-
Ideal for asphalt shingles, metal, slate, and concrete & clay tiles
-
5x lighter, 35x stronger than #30 felt
-
40‑year limited warranty for long‑term performance
-
GripWalk® provides non‑slip safety, even in wet conditions
-
High‑traction light grey top surface reduces heat buildup
-
Skid‑Resist® bottom enhances durability
-
1‑year UV protection for extended exposure before roof installation
Core
Meet M‑Armor™ Core – the lightweight heavyweight of roofing underlayments. At just 6.5 MIL thick, a 10‑square roll weighs only 21 lbs, making installation faster and easier. Designed to perform under both metal roofs and asphalt shingles, it’s 5x lighter and 25x stronger than #15 felt. Backed by a 20‑year limited warranty, M‑Armor™ Core features GripWalk® for dependable non‑slip safety even in moisture, a high‑traction light grey top surface to reduce heat, and a Skid‑Resist® bottom for enhanced durability. Plus, with 1‑year UV protection, it’s built to handle the elements before the roof goes on.
PRODUCT FEATURES:
-
6.5 MIL thickness – a 10‑square roll weighs only 21 lbs for easy handling
-
Ideal for metal roofs and asphalt shingles
-
5x lighter, 25x stronger than #15 felt
-
20‑year limited warranty for long‑lasting confidence
-
GripWalk® provides non‑slip safety, even in moisture
-
High‑traction light grey top surface reduces heat buildup
-
Skid‑Resist® bottom enhances durability
-
1‑year UV protection for extended exposure before roof installation
Ice & Water Shield
M‑Armor™ Ice & Water Shield Roofing Underlayment: A Superior Choice
Engineered for performance and reliability, M‑Armor™ Ice & Water Shield is the go‑to solution for Self‑Adhered Peel & Stick applications on sloped roofs. Built with a unique three‑layer facer and a deeply embossed, non‑woven blue top surface coated with proprietary SBS Modified Bitumen, this underlayment delivers exceptional strength, long‑lasting protection, and unmatched versatility. Perfect for metal roofing, asphalt shingles, tiles, and shakes, it offers a cooler working surface for improved installation comfort, making it an excellent upgrade over traditional asphalt‑based Peel & Stick products. With superior adhesion, a high‑traction walking surface, and UV resistance for up to one year, M‑Armor™ Ice & Water Shield is designed to stand up to the toughest weather conditions while keeping your roof protected from ice dams, moisture, and heat damage.
PRODUCT FEATURES:
-
50 mil thickness for heavy‑duty protection
-
Unique 3" overlap edge for stronger adhesion
-
Exceptional strength with a three‑layer facer and SBS Modified Bitumen coating
-
High‑temperature performance from ‑40°F to 260°F
-
High‑traction blue top surface for safer footing, even in moisture or condensation
-
Provides ice dam protection and Class A fire rating (ASTM E 108)
-
Cooler working surface for easier installation
-
Excellent rollability for quick, efficient handling
-
Flexible, wrinkle‑free, and crack‑resistant in cold conditions
-
Will not dry out or leach oil in high heat like asphalt‑based products
-
Synthetic, mold‑resistant composition for long‑term durability
-
Made from strong, recyclable polymers for environmental responsibility
-
Compatible with multiple roofing materials – metal, shakes, concrete tiles, slates, and asphalt shingles
-
Water‑repellent and non‑absorbent for added weather resistance
