Malarkey 350 Premium SBS Modified Bitumen Cap Sheet Roll, Weatherwood, 39-3/8 in. x 33 ft (1 Square/108.3 sq ft)
Malarkey 350 Premium SBS Modified Bitumen Cap Sheet Roll, Weatherwood, 39-3/8 in. x 33 ft (1 Square/108.3 sq ft)
350 Premium SBS cap sheet roll (Weatherwood)
Malarkey 350 Premium SBS is a granule-surfaced, polymer-modified (rubberized) asphalt cap sheet supplied in a 1-square roll. Designed for low-slope modified roofing and as a roof covering or fire-rated underlayment applications, it adds durable, UV-protective mineral surface protection.
Key Features:
- Premium SBS-Modified Construction: Polymer-modified (rubberized) asphalt cap sheet built for tough low-slope roofing performance.
- Granule-Surfaced Protection: Mineral granule surface helps protect the membrane from UV exposure and jobsite wear.
- Versatile Use: Can be used as a roof covering or as a fire-rated underlayment (commonly under tile roofs).
- Efficient Coverage per Roll: 1 square (108.3 sq ft) roll helps streamline estimating and installation planning.
- Code/Testing Listings (per manufacturer page): Referenced to ASTM standards and ASTM E108 Class A fire classification.
Please check the Product Data Sheet Here
Specifications Table:
| Specification | Details |
|---|---|
| Product name | Mal 350 Premium SBS Weather WD |
| Description | Malarkey 350 Premium SBS Weatherwood |
| Category | Roofing Materials |
| Sub-category | SBS Modified Bitumen Membranes |
| Unit of measure | RL - Roll |
| Material | Polymer Modified (Rubberized) Asphalt |
| Surface | Granule-surfaced cap sheet |
| Coverage per roll | 1 square roll (108.3 sq ft/roll / 10.1 m²) |
| Roll width | 39-3/8 in. |
| Roll length | 33 ft |
| Application | Adhered |
| Cap sheet thickness | 105 mils |
| Standards/listings referenced | ASTM D3909; ASTM D4869; ASTM D6757; ASTM E108 Class A; UL & Intertek Listed (manufacturer web data) |
Frequently Asked Questions (FAQ):
Q: What area does one roll cover?
A: One roll covers 1 square (approximately 108.3 sq ft / 10.1 m²).
Q: What are the roll dimensions?
A: Approximately 39-3/8 inches wide by 33 feet long.
Q: What is the product made of?
A: Polymer-modified (rubberized) asphalt with a mineral granule surface.
Q: Can this be used under tile roofs?
A: Yes—manufacturer descriptions note it can be used as a roof covering or as a fire-rated underlayment for tile roofs.
Q: What installation method is it intended for?
A: Manufacturer web data references adhered application for this product family; follow the official installation guide for approved methods and details.
A refined, resilient roof layer with a richly textured finish
There’s a quiet luxury in materials that do their job beautifully—this granule-surfaced SBS cap sheet brings a softly textured, mineral finish that reads both purposeful and polished. Layered beneath tile or used as a finished cap, it adds a confident shield against sun exposure and the everyday abrasions that wear a roof down. Pair it with warm, earthy exterior palettes for a seamless, grounded look that feels intentional from every angle. It’s the kind of behind-the-scenes essential that makes a home feel effortlessly well-composed—and truly protected.
Choose Malarkey 350 Premium SBS to add durable, UV-resistant cap-sheet protection to your low-slope or tile-roof assembly.
Installation