The Simpson W1 Wedge is a purpose-built concrete forming component from Simpson Strong-Tie, engineered to work hand-in-hand with the WT wedge form tie system used to hold concrete formwork securely in place during pours. Constructed from 14-gauge steel with a zinc galvanized G90 coating, this wedge is made in the United States to deliver consistent performance on job sites where reliable form support is essential. Each W1 wedge slides easily into the slots of the WT form tie, and its design allows for equally simple removal after the concrete has cured - making it a go-to choice for contractors and concrete workers who need fast, dependable formwork setup and breakdown.

Key Features

• 14-gauge steel construction - provides the structural strength needed to hold form boards firmly in position under the weight and pressure of poured concrete
• Zinc galvanized G90 coating - resists corrosion on the job site, extending the usable life of the wedge across multiple pours and wet conditions
• Designed for easy installation and removal from WT tie slots - speeds up both form setup and stripping, reducing labor time and effort on the job
• One size fits both composite and lumber WT models - eliminates the need to stock different wedge types, simplifying inventory and ordering for contractors
• Required component of the WT wedge form tie system - ensures the complete tie assembly functions as engineered for proper form spacing and support
• Made in the United States - produced to consistent quality standards that concrete forming professionals depend on

Why This Product

• The W1 completes the WT wedge form tie system - without it, the form tie cannot perform its function of securing form boards during a concrete pour, making this wedge an essential, non-optional component of the assembly
• Its tapered wedge design accommodates the natural expansion and contraction of wood form boards as moisture content changes - helping maintain consistent form pressure without requiring constant readjustment on site
• A single W1 size works with both composite and lumber WT tie models, which means concrete crews can carry one type of wedge for multiple form tie configurations rather than managing separate inventories
• The G90 zinc galvanized coating adds a layer of corrosion protection that helps this wedge hold up through repeated use in the wet, high-humidity conditions typical of active concrete forming work

Specifications

• Brand: Simpson Strong-Tie
• Gauge: 14
• Coating: Zinc Galvanized, G90
• Country of Origin: United States

Available Pack Options

• W1-R100: 100 Pk
• W1 -500: 500 Pk

Install With

• Installs with the WT wedge form tie; (2) W1 wedges required for each tie

Frequently Asked Questions

What is the W1 wedge used for?

The W1 wedge is a required component of the Simpson Strong-Tie WT wedge form tie system. The WT form tie secures concrete forms in place while concrete is poured, and two W1 wedges - one on each end of the tie - are needed to hold the form boards firmly in position.

How many W1 wedges do I need per WT form tie?

Each WT wedge form tie requires two W1 wedges, one installed at each end of the tie to secure the form boards on both sides.

Does the W1 wedge work with both composite and lumber WT form ties?

Yes. One size of the W1 wedge fits both composite and lumber WT tie models, so you do not need separate wedges for different form tie types.

What coating does the W1 wedge have, and why does it matter?

The W1 wedge features a zinc galvanized G90 coating. This coating helps protect the steel from corrosion during use on concrete forming job sites where moisture exposure is common, supporting durability across repeated use.