Simpson Strong-Tie DTT1Z-KT Deck Tension Tie Kit

Complete Code-Compliant Solution for Deck-to-House Connections

The Simpson Strong-Tie DTT1Z-KT is a comprehensive deck tension tie kit, providing all the essential components needed to secure a deck to the structure of a house without accessing internal floor joists. Engineered to meet or exceed 2015 IRC lateral load requirements, this kit simplifies installation, boosts safety, and ensures reliable performance in both new builds and retrofit projects.

Key Features

• All-in-One Installation Kit
  Includes everything needed for code-compliant installation:
  4 x DTT1Z tension ties
  4 x Strong-Drive SDWH Timber-Hex HDG screws
  26 x #9 x 1½" Strong-Drive SD connector screws

• No Need to Access Interior Joists
  Fixes from the exterior, removing the need to disrupt internal flooring, saving time and reducing labour.

• 14-Gauge Steel with ZMAX® Coating
  Robust structural performance with enhanced corrosion protection, suitable for use with treated timber in outdoor environments.

• Dual-Purpose Functionality
  Rated for deck-to-house lateral load connections and as a hold down for light-duty shear walls or braced wall panels.

• Pack of 1 Kit – Covers One Full Deck Installation
  Each kit supports the standard requirement of four lateral load connections per deck.

Material & Specification

• Material: Steel

• Thickness: 14-gauge

• Finish: ZMAX® galvanised (heavy zinc coating)

• Kit Contents:

  • 4 x DTT1Z Connectors

  • 4 x HDG Strong-Drive SDWH Timber-Hex Screws

  • 26 x #9 x 1½" SD Connector Screws

• Part Number: DTT1Z-KT

• Weight: 971g

• Manufacturer: Simpson Strong-Tie

Common Applications

• Lateral load connection between deck ledger and house framing

• Light-duty hold down in shear walls and braced wall panels

• Timber frame renovations and retrofits where internal joist access is restricted

• Residential decking upgrades to comply with current building codes