Envirolok Installation

Envirolok bags are easy to prepare and fill on-site, either by hand or with machinery. Unlike traditional retaining wall and slope stabilization products, Envirolok can be installed with a minimal construction footprint. The system’s flexibility and versatility accommodate projects at any scale and allow for last minute project changes. Please consult with project designer or engineer prior to construction, as actual project specifications may vary.

Download our detailed installation instructions here.

Filling the Envirolok BagsFilling and closing Envirolok Bags

Fill the Envirolok bags with the engineered fill (80% sand / 20% soil) as specified.  All bags should be filled consistently with 1.25 cf of engineered fill (80-90 lbs) and closed securely with the provided UV resistant zip tie or sew with approved threading.


envirolok soil preparationBase Preparation

Dig a trench the length of the structure no less than 3” deep and 16″ wide.  Compact bottom of foundation using hand tamper or plate compactor. This trench serves as toe stabilization and will protect the structure from undermining. Please note that some applications will require the bag to be set perpendicular to the slope, requiring a 30″ wide trench.


placing the envirolok bagsFoundation Course

Begin the foundation course by placing spikes in the excavated trench at the desired location of the first row. Place filled bags next to each other, seam side out, horizontally, the full length of the structure. The “snorkel” of the bag will land on top of the previously placed bag.  For larger structures where bags in the foundation course is set perpendicular to the slope, the snorkel should face inward.


placing addtional envirolok bagsPlacing Additional Bag Courses

After laying each entire course of bags, compact the bags to ensure a solid and uniform structure. Insert two spikes in the top of each bag evenly spaced. The spike placement will vary with the slope of the structure and should be placed in the center of the bag contact area between courses.


backfilling and compacting the systemBackfilling & Compacting the structure

Backfill and compacting after each course ensures strength and stability of the system. Backfill should be compacted to the specifications of the design. On-site soil can often be used as backfill, but must support vegetative growth and be free draining.



envirolok geogrid placementGeogrid Placement

Structures that require geogrid reinforcement will be specified by an engineer.  After compaction, geogrid placement will begin at the front of the bag course and will go towards the existing material. Place spikes on top of the geogrid and continue placing bag course. Geogrid should be pulled tight prior to backfill. Continue with course compaction.


envirolok top row installationCoping (Top Row)

Install the top row of the structure the same way the other courses have been placed. Tuck the “snorkel” under to give a finished look to the last course. If specified, the top coping may need to be set perpendicular to the direction of slope (as pictured).


established vegetationVegetation

Vegetation can be installed as each course is placed or upon completion of the structure. While native plantings are recommended, as they provide natural habitat, a matrix of deep roots and aid in filtering water, a variety of ornamental landscape plantings can be used.  Find out more here…