Boral® Ply 40 Underlayment

 Boral® Ply 40 is an SBS modified fiberglass reinforced underlayment/base sheet for tile, shingle or shake.
SBS modified asphalt minimizes wrinkling & buckling associated with non-modified membranes.

  • Durable Protection – All Seasons
  • Easy Installation
  • 90 Days Uncovered Exposure
  • 10 Year Limited Manufacturer's Warranty for one layer
  • 20 Year Limited Manufacturer's Warranty for two layers

> View the Boral® Ply 40 Brochure
> View the Boral® Ply 40 Installation Guide
> View the Boral® Ply 40 Warranty
> View the Boral® Ply 40 Safety Data Sheet
> View the Boral® Ply 40 Product SKU

 

Handling and Storage

  • Rolls are to be stored in standing position only
  • Store in clean, dry, cool area
  • Do not store directly in sunlight without proper protection
  • Protect membranes from exposure to rain, snow or ice
  • Boral® Ply 40 may be stored 2 pallets high provided a slip sheet of 3/8” minimum thickness of plywood is provided between pallets

Steep Roof Application

  • Secure underlayment with 1” head nails
  • Staples shall NOT be used for fastening

Specifications

  • Roll Size: 36” x 72' (216 ft2)
  • Roll Weight: 80 Lbs.
  • Coverage: Net 2 Squares
  • Thickness: 55 Mils
  • Rolls per pallet: 30 Rolls
  • Pallet weight: 2,450 Lbs.
  • Part Numbers:
    92300 - 2 Square Roll 
    92290 - Drop Ship: 570 Rolls/Truck

Certifications - Approvals

  • ASTM Meets physical requirements ASTM-D226