Polyguard

Poly Wall® Rot Shield Joist Tape for Decking, 4" x 100'

Poly Wall® Rot Shield Joist Tape for Decking, 4" x 100'

$65.63 - $131.26
  • SKU: POL RSJT
  • Availability: Orders for this item ship within 2 days if ordered Monday to Friday by 2 PM EST.
  • Shipping: Free Shipping
Availability: Orders for this item ship within 2 days if ordered Monday to Friday by 2 PM EST.
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Description

Rot Shield™ Joist Tape is your deck’s first line of defense against water intrusion and premature structural damage. Designed to serve as a waterproof barrier between joists, ledger boards, and deck boards, this easy-to-install tape helps prevent mold, mildew, rot, and corrosion—extending the life of your outdoor investment. UV-stable and designed for real-world job site conditions, Rot Shield features a split release liner for easy application and a brown backing to blend seamlessly beneath decking.

Features & Benefits

  • Water Barrier Protection: Shields wood from trapped moisture, reducing risk of rot and fungal decay.
  • Corrosion Defense: Creates a physical barrier between treated lumber and galvanized fasteners.
  • Fast & Easy Installation: Split release liner and printed guide lines for smoother, wrinkle-free placement.
  • Universal Fit: Single 4" x 100' size suitable for most deck framing applications.
  • Cold Weather Compatible: Can be installed in low temperatures without primer.
  • UV Resistant: Stable for up to 120 days of sun exposure prior to deck board installation.
  • Professional Finish: Brown backer blends under decking for a clean look; printed facer doubles as top-of-joist indicator.
  • No Primer Required: Single-step process for quick deployment.

Technical Data

Property Value
Roll Size 4" x 100'
Material Type Asphalt-based adhesive with polyethylene facer
Liner Split-release film
Color Brown (backer), Printed Facer
UV Exposure Rating 120 days
Temperature Range (Application) Cold weather compatible
Primer Requirement None
Compatibility Treated wood, galvanized fasteners

Recommended Applications

  • Deck joists
  • Ledger boards
  • Rim joists
  • Beams
  • Blocking
  • Posts and other horizontal framing elements

Common Substrates:

  • Pressure-treated lumber
  • Untreated framing lumber
  • Engineered wood products (e.g., LVL)
  • Galvanized metal fasteners

Application Details

  • Surface Prep: Ensure wood is dry and free from loose debris.
  • Peel & Stick: Remove split release liner for fast, centered placement. Follow 1 ¼” guide lines from each edge to reduce wrinkles and improve alignment.
  • Overlap Seams: Maintain a 1” overlap where tape pieces meet.
  • Nail-Ready: Rot Shield self-seals around fasteners to prevent water intrusion.
  • Install Decking: Tape can be left exposed for up to 120 days before installing boards.