Soundproofing Materials Needed For an Outdoor Generator Enclosure

Making your own soundproof generator enclosure can be a fun and satisfying task. Most materials can be found easily at your local hardware store or online. Here is a great list of materials that can be used and some facts about them…

Mass Loaded Vinyl

  • Great noise reducer
  • Often used on the outside of a good soundproof shed
  • Is tough and durable
  • Can be layered
  • Can be painted for a more decorative look
  • When applied, gaps need to be caulked or metal tape used for effectiveness

Medium Density Fiberboard (MDF)

  • Used for the walls of the enclosure
  • Preferred over plywood because it passes less sound
  • Some are moisture resistant
  • Some types are fire retardant
  • Flexible and can be shaped or curved
  • Inexpensive
  • Heavier than plywood
  • Emits possible carcinogens when cut

Closed Cell Foam Matting

  • Great for inner insulation
  • An effective soundproof barrier by blocking and absorbing noise
  • Water resistant unlike open cell foam
  • Known to be mold resistant
  • Usually fire retardant
  • Lightweight
  • More durable and stronger than open cell foam
  • More dense and costs more than open cells
  • Some expensive models are a “peel and stick” design

Fiberglass Insulation

  • Inexpensive, compared to closed cell mats
  • Moisture resistant
  • Non-combustible, non-flammable
  • Does not easily deteriorate
  • Effectively controls temperature and sound
  • Needs to be tightly packed for the most optimum sound barrier
  • Skin irritant

Acoustical Foam or Tile

  • Fire resistant
  • Effectively absorbs sound
  • Some absorb water

Soundproof Paint

  • Blocks moisture
  • Reduces noise and vibrations
  • Non-toxic
  • Requires several coats to be effective
  • Flame retardant
  • Maybe hard to find

Generator noise can be a big problem, especially in quiet neighborhoods or campgrounds. These soundproofing materials would definitely be a great asset in reducing noise pollution.