Pneumatic Fastening Into TimberStrand® LSL

Nailing into TimberStrand® LSL is generally straightforward with standard pneumatic framing tools.  While TimberStrand LSL is marginally denser than SYP, nailing issues—including inconsistent nail embedment in the wide face of TimberStrand LSL—are typically related to jobsite variables that limit air pressure and nail-gun performance.   

Reliable embedment of fasteners is dependent on ensuring sufficient air delivery and tool performance.  Weyerhaeuser has found that the setup parameters outlined below produce uniform fastening performance into TimberStrand LSL across a broad range of field conditions.  Consult with the pneumatic nailer manufacturer if you are experiencing problems after following the recommendations below.  

Recommended Pneumatic Nailer Setup:

• Maintain 110–120 psi at the tool (typically 120–130 psi at the compressor)
  • Verify actual pressure at the gun with an in‑line gauge
  • Use 3/8‑inch air hose, 50 ft maximum; avoid 1/4‑inch hoses
  • Limit operation to one or two tools per compressor
  • Use a two‑stage compressor where steady output is required

• Use a heavy‑duty strip framing nailer (approximately 9 lbs or heavier)
  • Trigger-fire only; avoid bump-nailing for consistency
  • Use high-quality nails recommended by the pneumatic nailer manufacturer

Historically, many cordless framing nailers would not consistently deliver the driving force required for products like TimberStrand LSL.  In recent years, some new cordless nailers have shown ability to achieve full fastener embedment, though pneumatic tools remain the more reliable option when appropriate setup is maintained.

Refer to TB‑206 and or Trus Joist Beam and Headers, Columns Specifier’s Guide for your region (TJ-9000 or TJ-9020) for applicable spacing, edge distances, and multi‑ply nailing patterns.