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Secure Start® Plus Underlayment

Secure Start® Plus Underlayment

Our Most Popular Underlayment

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.

Our most popular underlayment for asphalt shingles, Secure Start® Plus also works well for tile, wood, and metal roofing applications.

Underlayment for Shingles, Tile, Wood & Metal Roofs

A new roof requires more than just shingles. It’s a cohesive, coordinated system of 5 parts. In order of installation, they are: 1) ice & water barrier, 2) underlayment, 3) starter shingles, 4) field shingles, and 5) hip & ridge shingles.

Underlayment sits under the shingle and provides a vapor barrier covering the entire roof. Malarkey offers four underlayments tailored to asphalt shingle roofs.

Secure Start® Plus is our most versatile and popular underlayment.

Specification
  • Technical Specs

    SKU: 1031
    L: 250′
    W: 48″
    SQ/Roll: 10

    Testing Compliance

    ICC-ES AC188
    ASTM D226
    ASTM D8257
    ASTM E108 Class A
    Meets physical properties of ASTM D4869
    Intertek CCRR-1082
    CAN/CSA A123.3
    FBC Approval – FL23186

    Shipping Specifications

    SQ/Roll: 10
    Rolls/Pallet: 36

Technical specification
  • Unique ref.secure-start-plus-underlayment
  • Product familyAccessories
  • Product groupShingle Underlayments
  • TypeObject (single object)
  • Date of publishing2025-03-03
  • Edition number1
Related
  • Designed inUnited States
  • Manufactured inUnited States
Classification
  • BIMobject CategoryConstruction - Roof
  • IFC classificationRoof
  • ETIM CodeEG019610
  • ETIM NameRoofing materials
  • Uniclass 2015 CodePr_25_57_08_71
  • Uniclass 2015 DescriptionReinforced bitumen membrane perforated underlays
  • CSI MasterFormat 2014 Code06 16 26
  • CSI MasterFormat 2014 TitleUnderlayment
  • OmniClass Number23-13 39 13
  • OmniClass TitleRoof Underlayment

Region availability

North America
Canada
United States