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Malarkey Secure Start Plus Synthetic Roof Underlayment 48 in. x 250 ft. Roll, White
Regular price $275.00Orders start at $399 — combine any items to reach the minimum. Learn more
Malarkey Secure Start Plus Synthetic Roof Underlayment 48 in. x 250 ft. Roll, White
Malarkey Secure Start Plus is a lightweight synthetic steep-slope roof underlayment with anti-skid technology for a more walkable, safer installation surface. This roll measures 48 in. x 250 ft. in white and installs under asphalt shingle roofing. Pair it with Malarkey shingles for a complete steep-slope roofing system.
Key Features:
- Anti-skid surface: Anti-skid technology securely holds the underlayment in place and provides a more walkable surface for greater installation safety.
- 5-ply construction: Five plies with a synthetic polyolefin reinforcement layer deliver greater tear strength than conventional felt paper.
- Water-resistant layer: A non-porous monolithic polypropylene layer helps resist water penetration.
- Lightweight handling: Lightweight synthetic design makes it easier to carry and position on the roof than heavy felt.
- Steep slope use: Designed specifically as an underlayment for steep-slope roofing applications.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Malarkey |
| Sell unit | 1 roll, 48 in. x 250 ft. |
| Product line | Secure Start Plus |
| Material | Synthetic polypropylene with polyolefin reinforcement layer |
| Color / finish | White |
| Nominal size | 48 in. x 250 ft. |
| Dimensions | 48 in. x 250 ft. per roll |
| Ply construction | 5 plies |
| Thickness note | Lightweight synthetic underlayment |
| Coverage per unit | 48 in. x 250 ft. per roll |
| Intended use | Steep slope roofing underlayment |
Coverage & How Much You Need:
One roll measures 48 in. wide by 250 ft. long, covering approximately 1,000 sq. ft. before laps. Size the job by roof area and add extra for head laps and hip and ridge waste per your shingle manufacturer's underlayment installation requirements.
Fit and Compatibility:
Designed as a steep-slope underlayment for use beneath asphalt shingle roofing, including Malarkey shingle systems. Underlayment, shingles and accessory flashings are sold separately.
Frequently Asked Questions (FAQ):
Q: What is included in one order?
A: One roll of Malarkey Secure Start Plus synthetic underlayment measuring 48 in. x 250 ft. in white.
Q: How much area does one roll cover?
A: A full roll is 48 in. x 250 ft., roughly 1,000 sq. ft. before accounting for laps and waste.
Q: How does it compare to felt underlayment?
A: Its 5-ply synthetic construction with a polyolefin reinforcement layer provides greater tear strength than conventional felt paper, and the anti-skid surface is more walkable.
Q: Is it water resistant?
A: Yes, a non-porous monolithic polypropylene layer helps resist water penetration.
Q: How is it installed?
A: It rolls out on the roof deck under shingles and is secured per the manufacturer's instructions; the anti-skid surface helps hold it in place while you work.
Q: Can it be used on any roof slope?
A: It is designed as a lightweight synthetic underlayment for steep slope roofing applications.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Secure Start Plus is a solid choice when you want tear resistance and walkability that felt cannot match, especially on long runs and steeper pitches where footing matters. Follow Malarkey's underlayment instructions for lap direction and fastening so the shingle warranty terms are met. Size rolls to your roof area and plan laps before ordering. Pair with Malarkey shingles and compatible flashing for a full-system approach.
Roof underlayment installation is done at height on potentially slick surfaces, so use appropriate fall protection and check the manufacturer's instructions for steep-slope use.
Order Malarkey Secure Start Plus synthetic underlayment today for a safer, more durable roof deck layer.
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