Are preserved moss walls sustainable? Do they qualify for LEED credits?

Green Walls at Millenium Towers in Dallas, Texas

Preserved moss walls can be a sustainable choice, depending on the materials used and the method of preservation. Generally, moss walls are preserved with a combination of non-toxic chemicals, which can make them a more sustainable option than artificial alternatives (like plastic boxwood). 

Some preserved moss walls may qualify for LEED credits depending on which credits are being pursued. They can be presented as part of the biophilic design package.  It is best to consult with a LEED certified professional to determine if a particular preserved moss wall would qualify for certification.

Ask them about the following credits:

Credit 2.1: Occupant Comfort: Occupant Survey (1 point)

  • A green wall can improve a buildings score on an occupant survey in the following ways:
    • Acoustics; the mosses attenuate sound by reflecting, refracting and absorbing acoustic energy which leads to fewer echoes. We also build on foam, so it adds to the acoustical benefits.
    • Other comfort issues; having greenery in and around buildings has shown to alleviate stress and increase overall wellness of its occupants.

Innovation in Operations (IO):

Credit 1: Innovation in Operations (1-4 points)

  • Installing a green wall does not only help in gaining LEED points but does it in an innovative way. This is accomplished by simply incorporating the technology that nature has provided instead of relying on man made solutions, which usually require much more energy.