The Simpson H1.81Z ZMAX Galvanized Hurricane Tie from Simpson is the first hurricane tie specifically sized for engineered wood, built to create a stronger connection between 1-3/4 in. LVL roof rafters and the top plate of the wall. Engineered for structures facing higher-load demands - such as heavy snow loads or seismic events - this connector delivers meaningful lateral resistance while reducing the hardware and labor typically required by conventional twist strap solutions. Its ZMAX galvanized finish makes it equally at home in exterior environments and applications involving treated lumber.

Key Features

• Wider seat sized for 1-3/4 in. LVL rafters - fits engineered lumber precisely, eliminating the fit compromises common with standard hurricane ties
• Both side faces connect to the joist - delivers superior support compared to single-sided alternatives by anchoring the connection on two planes
• Installs on the inside, outside, or both sides of the wall - gives contractors flexible placement options to meet varying jobsite and code requirements
• Connector embossments strategically placed for added stiffness - reinforces the bracket in the areas that matter most, improving overall load performance
• Compatible with popular 0.148 in. x 1-1/2 in. connector nails - works with fasteners already common on the jobsite, reducing the need for specialty hardware
• Formed from 18-gauge steel - provides structural durability appropriate for demanding rafter-to-wall-plate connections
• ZMAX galvanization for extra corrosion resistance - stands up to exterior exposure and contact with treated wood, extending the service life of the connection

Why This Product

• Purpose-built for LVL construction - unlike generic hurricane ties, this connector is specifically engineered for 1-3/4 in. laminated veneer lumber rafters, ensuring a proper fit and reliable performance in engineered wood roof systems
• Fewer fasteners, higher load capacity - installs with half the nails required for two single-sided twist straps while offering a higher lateral allowable load, making it a more efficient and cost-effective solution for LVL roof tie-down
• Versatile placement for complex installs - the ability to mount on the inside, outside, or both sides of the wall simultaneously means this tie adapts to a wide range of framing configurations without requiring separate hardware
• Built for tough exposure conditions - ZMAX galvanization provides an added layer of corrosion protection beyond standard galvanized finishes, making this connector a dependable choice for exterior applications and treated-wood assemblies

Specifications

• Model Number: H1.81Z
• Gauge: 18
• Coating: ZMAX
• Finish: ZMAX
• Member Size: 1-3/4 in. width LVL
• Install With: Installs with 0.148 in. x 1-1/2 in. connector nails or #9 x 1-1/2 in. Simpson Strong-Tie Strong-Drive SD Connector screws
• Country of Origin: United States

Downloads and Resources

• View Specifications

Frequently Asked Questions

What type of rafter is the H1.81Z specifically designed for?

The H1.81Z is specifically designed for use with 1-3/4 in. LVL (laminated veneer lumber) roof rafters, making it the first hurricane tie sized specifically for engineered wood.

Where can the H1.81Z be installed on a wall?

The H1.81Z can be installed on the inside or outside of the wall, or on both sides simultaneously, providing installation flexibility to meet various jobsite requirements.

What corrosion protection does the H1.81Z offer?

The H1.81Z features ZMAX galvanization, which offers extra corrosion resistance, making it suitable for exterior applications and use with treated wood.

Why is the H1.81Z considered a cost-effective solution compared to twist straps?

The H1.81Z installs with half the nails needed for two single-sided twist straps and offers a higher lateral allowable load, making it both a more economical and higher-performing solution for tying down an LVL roof.

Related Products

• Nails 0.131 x 1-1/2
• #9 x 1 1/2"
• Nails 0.131 x 2-1/2