Lowe's Home Improvement
FREE PARCEL SHIPPING on Qualifying Orders
Previous Next
Zoom Out Zoom In

Dow 1-in x 4-ft x 8-ft Polyisocyanurate Insulated Sheet

  • Dow 1-in x 4-ft x 8-ft Polyisocyanurate Insulated Sheet

Dow 1-in x 4-ft x 8-ft Polyisocyanurate Insulated Sheet

Item #: 42864 |  Model #: 268426

Not Yet Rated

1-in x 4-ft x 8-ft Polyisocyanurate Insulated Sheet

  • Reduce energy loss
  • Moisture-resisting facers
  • High R-value of 6.5
Insulation Type Polyisocyanurate
Thickness (Inches) 1.0
Length (Feet) 8.0
Width (Feet) 4.0
R-Value 6.5
Installation Instructions included Yes
Weather Resistant Barrier Yes

Product Documentation

Download these helpful files for this product.

  • Installation Guide
  • Warranty Guide
  • Energy Guide
  • Dimensions Guide
  • How To Guide
  • Use & Care Guide
  • Operating Guide

pdf To view these documents, you need Adobe Acrobat Reader. You can download a free copy from the Adobe web site.

Community Q&A
  • Save Item
    Save Item Help
    Save an item to your
    • Lists to collect ideas and plan future projects.
    • Home Profile to organize and store details about your home.
  • Set a Reminder Save Item Help

    Set a Reminder and we'll send you an email when it's time to stock up on items you buy regularly or seasonally, like air filters, fertilizer or mulch. Use notes to record details (quantity, gift recipient, etc.).

  • Go to Your Account