Pittsburgh Lumberyard

If you are a Pittsburgh area contractor looking for a full line lumberyard, contact us to deliver & stock your next job.

Pittsburgh Lumber Supplier since 1949Since 1949 Irwin Builders Supply has been one of the area’s largest lumber suppliers offering a variety of wood products.

Irwin Builders Supply stocks a wide variety of graded lumber and plywood. We work with a variety of manufacturers to consistently make available to our customers high-quality lumber products.

We source from national and local vendors to maintain value and quality for our Pittsburgh contractors.

 Lumber Products

  • Number 1 grade & select wolmanized lumber 
  • KD Fir
  • Spruce
  • SYP & Fir Plywood
  • Wall Panels
  • Styrofoam SIS Insulated Sheathing Panels
  • Engineered Lumber (I- joist and LVL beams)
  • Composite Decking
  • TREX™
  • Gaurdeck™ from Guardian
  • OSB
  • Luan Underlayment
  • Precut Studs
  • Advantech™
  • Roof Trusses & Wall Panels
  • Fire Treated Lumber
  • Zip System Wall & Roofing Sheathing
  • MDO plywood
  • Doug Fir Framing lumber
  • Cedar boards
  • Oak boards
  • Poplar boards

Quality Lumber Manufacturers