Malarkey Right Start UDL Underlayment 39-3/8" x 66'
Regular price $69.50The Malarkey Right Start UDL Underlayment 39-3/8" x 66' is a synthetic underlayment for jobs that require Malarkey model/MPN UDL in the RL sell unit. Secure Start Plus is a lightweight, synthetic underlayment designed with anti-skid technology, which securely holds the underlayment in place and provides a more walkable surface for greater installation safety.
Key Specs
- Brand: Malarkey
- Model / MPN: UDL
- SKU: MALRSU
- Sell unit: RL
- Product type: Synthetic Underlayment
- Size / color: 39-3/8" x 66'
- Category: Residential Roofing | Residential Roofing/Underlayment | Residential Roofing/Underlayment/Synthetic Underlayment | Underlayment | Underlayment/Synthetic Underlayment
- Coverage / unit: 2 squares (200 sq ft) per roll
Key Features
- Made with proprietary NEX Polymer Modified Asphalt for exceptional weathering and extra strength, flexibility, and durability to resist damage and last longer
- Installed with just enough fasteners (nails or staples) to hold the material firmly in place and work safely (or per adopted building code) until shingles can be applied
- Modified asphalt sheets, reinforced with rubber and plastic polymers on a fiberglass mat, deliver greater tear strength than conventional felt membranes for lasting durability
Coverage & How Much You Need
This item is listed as 2 squares (200 sq ft) per roll. Use the project takeoff, manufacturer installation instructions, and expected waste/overlap to confirm the order quantity.
Compatibility / Fitment
Use this item only when the brand, model/MPN, size/color, sell unit, and system type match the project specification. Do not substitute it for a different synthetic underlayment, pack size, color, membrane/system family, or installation condition without checking the manufacturer instructions.
FAQs
What exactly am I ordering?
Malarkey Right Start UDL Underlayment 39-3/8" x 66', sold as RL, with SKU MALRSU and manufacturer model/MPN UDL.
What model or part number should I match?
Match model/MPN UDL and confirm the brand is Malarkey. If the job spec lists a different model, size, color, or system family, hold for review.
What unit is the price based on?
This listing is built around the RL sell unit. Confirm the unit before comparing price, quantity, or coverage.
How do I estimate quantity?
Use 2 squares (200 sq ft) per roll, then add waste or overlap per the manufacturer instructions and the project design.
What should be checked before purchase?
Confirm the model/MPN, sell unit, size/color, jobsite condition, compatible system components, and any manufacturer installation limits before approving the order.
Roofing and exterior-envelope work can involve fall hazards, weather exposure, fumes, adhesives, and system-specific installation requirements; follow the manufacturer instructions, OSHA-safe work practices, and local code or use a qualified contractor.
Product Expert Notes
Choose this item when Malarkey model/MPN UDL, SKU MALRSU, and the RL sell unit match the project requirement. It is best treated as an exact-match material selection, not a generic substitute.
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