Resurfacing with Glacial Rock

If you have an existing seawall consider resurfacing with glacial stones. They significantly reduce wave action which in turn diminish erosion and the scouring effect. The presence of stones will also allow for the presence of some aquatic insects which provide food for ducks, fish and turtles. Stones also deter Canada Geese and muskrats.


  • The cost will vary but is approximately $50 per linear foot
  • No permit is needed if the rock is being placed in front of an existing seawall
  • Use a stone which is produced by glacial activity. No stone should weigh more than 120#
  • Some maintenance is required. The stones may need to be replaced against the wall in the spring due to ice action. Also depending on your location seaweed and other debris can accumulate and will need to be cleaned a few times a summer.

Morris-2 shorelineNo seawall in place? Wonderful!!! Consider a bio-engineered seawall. A bio-engineered seawall uses a material like glacial stone in conjunction with native vegetation. The plantings are installed between spaces in the rock where they will eventually root and sprout. The vegetation establishes a deep root system that stabilizes the shoreline and adds to the natural appearance of the property. It also provides habitat for wildlife. Coir logs can also be used.

  • A permit is required and only native noninvasive species should be utilized
  • Please see list of contractors in area that have experience in this area
  • Cost is approximately $100 per linear foot
  • Provides significant long term stability