SEED prefabricated panels are:

  • Designed to meet passive house standards

  • Exceptionally well-insulated

  • Airtight to ensure proper moisture and vapour control

  • Precision Built

  • Ecologically responsible

  • Competitively priced

  • Engineered to last

  • Weather resistant

  • Ready for rough-ins

  • Ready for exterior cladding


All designs are licensed under Creative Commons Attribution-ShareAlike 4.0 International.

Our typical wall panels can be made to your specifications in terms of wall thickness and R-Value. Common choices are R39 (2x4 interior wall with 6" cellulose cavity) and R50 (2x6 interior wall with 7" cellulose cavity), both sheathed with 1.5" wood fibreboard insulation.

All of our wall panels include an interior service cavity, ready for on-site rough-ins and final insulation. Panels are wrapped and sealed with high-performance membranes and strapped with 1x4 vertical strapping, ready for exterior cladding

All designs are licensed under Creative Commons Attribution-ShareAlike 4.0 International.

Typical roof panels are R-56, built with 14" I-Joists filled with cellulose insulation and sheathed with 1.5" wood fibreboard insulation.

We provide an interior service cavity, as well as exterior purlins, decking, and ice and water shield.

All designs are licensed under Creative Commons Attribution-ShareAlike 4.0 International.

Typical floor panels are R48, built with 11 7/8" I-Joists filled with cellulose insulation, and sheathed with 1.5" wood fibreboard insulation.

We provide 3/4" subfloor on interior, and a weather-resistive barrier and rodent screen to protect the exterior

Connection Details

About R-Value

SEED wall panels, as well as roof and floor panels, can be adjusted to meet your desired R-Value.

Most commonly, wall panels include a 7-inch exterior cavity filled with dense-packed cellulose insulation. This results in an R-Value of R50 when combined with natural insulation in the interior cavity and wood fibre board exterior continuous insulation.