{"product_id":"malarkey-right-start-udl-underlayment-39-3-8-x-66-malrsu","title":"Malarkey Right Start UDL Underlayment 39-3\/8\" x 66'","description":"\u003cp\u003eThe 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.\u003c\/p\u003e\u003ch3\u003eKey Specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Malarkey\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel \/ MPN:\u003c\/strong\u003e UDL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e MALRSU\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSell unit:\u003c\/strong\u003e RL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct type:\u003c\/strong\u003e Synthetic Underlayment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize \/ color:\u003c\/strong\u003e 39-3\/8\" x 66'\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Residential Roofing | Residential Roofing\/Underlayment | Residential Roofing\/Underlayment\/Synthetic Underlayment | Underlayment | Underlayment\/Synthetic Underlayment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoverage \/ unit:\u003c\/strong\u003e 2 squares (200 sq ft) per roll\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMade with proprietary NEX Polymer Modified Asphalt for exceptional weathering and extra strength, flexibility, and durability to resist damage and last longer\u003c\/li\u003e\n\u003cli\u003eInstalled 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\u003c\/li\u003e\n\u003cli\u003eModified asphalt sheets, reinforced with rubber and plastic polymers on a fiberglass mat, deliver greater tear strength than conventional felt membranes for lasting durability\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCoverage \u0026amp; How Much You Need\u003c\/h3\u003e\u003cp\u003eThis 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.\u003c\/p\u003e\u003ch3\u003eCompatibility \/ Fitment\u003c\/h3\u003e\u003cp\u003eUse 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.\u003c\/p\u003e\u003ch3\u003eFAQs\u003c\/h3\u003e\u003ch4\u003eWhat exactly am I ordering?\u003c\/h4\u003e\u003cp\u003eMalarkey Right Start UDL Underlayment 39-3\/8\" x 66', sold as RL, with SKU MALRSU and manufacturer model\/MPN UDL.\u003c\/p\u003e\u003ch4\u003eWhat model or part number should I match?\u003c\/h4\u003e\u003cp\u003eMatch 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.\u003c\/p\u003e\u003ch4\u003eWhat unit is the price based on?\u003c\/h4\u003e\u003cp\u003eThis listing is built around the RL sell unit. Confirm the unit before comparing price, quantity, or coverage.\u003c\/p\u003e\u003ch4\u003eHow do I estimate quantity?\u003c\/h4\u003e\u003cp\u003eUse 2 squares (200 sq ft) per roll, then add waste or overlap per the manufacturer instructions and the project design.\u003c\/p\u003e\u003ch4\u003eWhat should be checked before purchase?\u003c\/h4\u003e\u003cp\u003eConfirm the model\/MPN, sell unit, size\/color, jobsite condition, compatible system components, and any manufacturer installation limits before approving the order.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eRoofing 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.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eProduct Expert Notes\u003c\/h3\u003e\u003cp\u003eChoose 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.\u003c\/p\u003e","brand":"Malarkey","offers":[{"title":"Default Title","offer_id":53114813546863,"sku":"MALRSU","price":69.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/3499\/7051\/files\/ProductImage_MALRSU.jpg?v=1781510770","url":"https:\/\/superarbor.io\/products\/malarkey-right-start-udl-underlayment-39-3-8-x-66-malrsu","provider":"Super Arbor","version":"1.0","type":"link"}