Homex 300

Homex 300 is a pre-molded wood fiber strip that does double duty as light duty forming material for walkways, patios pool aprons and driveways and as an expansion joint where masonry or concrete walls meet outside aprons, walks, patios or steps.

Homex 300 is used in concrete and masonry joints to compensate for contraction and expansion caused by temperature change. Because of its resilient composition, Homex is installed neatly and easily, without danger of misalignment or breakage. It will not extrude in hot weather nor crack in cold weather. The natural gray color blends with concrete to further enhance the appearance of the finished job.


Made in the U.S.A

If you have any questions please check out Homasote’s website or call our office at 732.905.5300.

  • Time-tested in numerous applications throughout the United States and Canada
  • Compatible with sealants, including polymerized sealants
  • Tough, strong and flexible
  • Resilient in any temperature
  • Weather-resistant
  • Blends with concrete for a beautiful finish
  • VOC compliant
  • Non-extruded and non-bituminous
  • No formaldehyde or asbestos additives
  • No knots, voids or splinters
  • Will not split when nailed
  • Over 70% recovery after expansion




1/2″ X 3 ½” X 10′



1/2″ X 4″ X 10′



1/2″ X 6″ X 10′





  • ASTM D-1751
  • US Fed. Spec. HH-F-341e Type 1
  • AASHTO Designation M213-65
  • ICC-ES ESR-1374

Homex 300 Expansion Joint Filler has been used successfully in varied installations ranging from those measured in feet to those measured in miles. Homex may be used in any building construction where masonry or concrete walls meet outside aprons, walks, patios or steps. It is ideal for swimming pool aprons, outdoor terraces, driveways and retaining walls. In general construction, Homex has been used successfully in concrete floors and walls, bridges, tunnels, viaducts, abutments, ramps, retaining walls, gutters, curbs and pavements.

Click here to find out about Homex LEED credit

For more information on sustainability with Homasote products click here