Steel Guard Manufactures a Variety of Temporary Construction Sound Barriers for Heavy Construction Sites that absorb and block sound. These Sound Curtains are made to adhere to Walls or Fences on construction sites. The blankets are considered “Temporary”, but will stand up for outdoor use for over a year. These Sound Barriers are made of 1”, 2” or even 4” Quilted Fiberglass, with the option to add Mass Loaded Vinyl backing to block unwanted noise pollution into areas outside of the site.