Keppen Construction, Inc.

Windows
    Andersen Windows
Fasteners
    GRK Fasteners 
Sealants
    OSI Sealants
Locks
    Schlage
Insulation
     Johns Manville
     Dow Chemical Co.
Roofing 
      IKO 
      CertainTeed 
Decking 
    Composite
       TREX Decking & Rail 
     Wood
       RedWood 
        Cedar 
        Treated 
Interior Doors, Trim & Stair Parts
   Timber Roots MTD 
   Ferche 
   Hurley Custom Woodworking
Siding
    LP SmartSide 
    CertainTeed 
Cabinetry
    Rosebud Manufacturing
    Kitchens & Windows Unlimited
Exterior Doors
    Larson Storm Doors 
    ODL 
    Royal Passage Doors by Timber Roots