Technical specifications

Pro-Fab modular homes specifications

1) Roof

  • R-44 insulation (thermal bridge free)
  • 25-year guarantee asphalt shingles
  • Starter strip
  • Self-adhesive membrane
  • 1/2" plywood
  • Prefabricated engineer-approved roof trusses at 24" c/c
  • Ventilated attic
  • R-40 cellulose fiber insulation
  • Type 1 vapor barrier
  • 1 by 4 strapping at 16" c/c
  • 1/2" sheetrock, screwed

2) Wall

  • R-24 insulation (thermal bridge free)
  • Exterior siding
  • Wind barrier
  • 3/8" plywood
  • Structure: ISOFOR R-20 system
  • Fiberglass insulation at perimeters of doors and windows
  • ISOFOR 2-2" by 10" lintel
  • Type 1 vapor barrier
  • 1" x 4" strapping at 16" C/C
  • 1/2" sheetrock, screwed

Pro-Fab modular homes specifications

3) Floor

  • 2" x 10" doubled perimeter beam
  • 4-2 x 10 middle beam bolted every 4"
  • 5 1/2" styrofoam insulation around perimeter (option)
  • 3/4" BCF tongue and groove plywood, glued and screwed
  • Floor joists
  • 1 x 4 continuous bond at the center of each module