Install manual
How to install Grass Barrier
Call 811 before you dig. Grass Barrier is a 10 in tall strip. Dig a narrow trench and stand it in at the height you want: 4 in above grade, 2 in, or flush. Join the ends with the Grass Barrier connecting kit, overlapping them a little inside the clamps, then firm the soil on both sides. Let the coil relax in the sun before you start.
Before you dig
- Call 811 before you dig. Wait until buried utilities are marked.
- Shape the bed line with a garden hose or rope.
- Unroll the coil and let it relax in the sun.
- Pick the finished height: standard, low profile or flush.
Tools and materials
Tools
- Flat spade or edging tool
- Tape measure
- Garden hose or rope for curves
- Drill and wrench for the connecting kit
Materials
- Grass Barrier, 10 in tall, cut to your length
- One Grass Barrier connecting kit per joint: two pre-drilled 200 mil HDPE clamps with 316 stainless hardware
What to order
Order Grass Barrier by the foot in 5 ft steps, with a 20 ft minimum, and one connecting kit for every joint.
- Height
- 10 in tall
- Thickness
- 100 mil (2.5 mm)
- Sold by
- The foot, in 5 ft steps
- Minimum order
- 20 ft
- Longest piece
- 110 ft
- Volume pricing
- Less per foot from 50 ft in one order, all cuts counted, applied in the cart
Work out your length
- Measure every bed edge you want to protect, in feet.
- Round up to the next 5 ft.
- Count one connecting kit for each joint, including where the ends of a closed bed meet. Joints need no extra length.
Example: a 12 ft by 8 ft bed is 40 ft around. Order 40 ft and one connecting kit for the joint where the ends meet.
The “How much do I need?” calculator on the Grass Barrier page does this math for you.
Connecting kit
One per joint: two pre-drilled 200 mil HDPE clamps with 316 stainless hardware.
- Grass Barrier connecting kit
- Optional: Grass Barrier Edge Guard, 22 ft, a cap that fits over the top edge
Steps
-
Lay out the edge
Shape the bed line with a garden hose or rope, then measure it.
-
Relax the coil
Unroll the barrier and let it sit in the sun before you set it. It is easier to set once it lies flat.
-
Dig a narrow trench
Dig 6 in deep for the standard edge with 4 in above grade, 8 in for a 2 in low profile, or 10 in to set it flush.
-
Set and join
Stand the barrier in the trench. Where two ends meet, overlap them a little inside the clamps of the Grass Barrier connecting kit and fasten the clamps, one kit per joint. The overlap makes the joint easier to line up.
-
Backfill
Firm the soil on both sides so the edge stays at the height you chose, then top off the bed.
Check your work
- The edge shows the same height all along: 4 in, 2 in, or none if flush.
- Every joint overlaps a little inside the clamps and is fastened with a Grass Barrier connecting kit.
- The soil is firm on both sides, and the curves hold their shape.
Maintain
- Trim grass that grows over the top edge when you edge the bed. The barrier works below the soil, so top growth still needs trimming.
- Keep mulch from building up over the top edge.
Questions
Is Grass Barrier 10 in deep or 10 in tall?
10 in tall, from top to bottom. You choose how much goes below the soil: 6 in for the standard edge, 8 in for a low profile, or all 10 in to set it flush.
How much should show above the soil?
4 in for the standard edge, set 6 in below grade. 2 in for a low profile, set 8 in below. None if you set it flush, with all 10 in below grade.
The coil will not lie straight. What do I do?
Let it relax in the sun before you set it. It is easier to set once it lies flat.
How do I join two ends?
With the Grass Barrier connecting kit: two pre-drilled 200 mil HDPE clamps with 316 stainless hardware. Overlap the ends a little inside the clamps; it makes the joint easier to line up. You don't need to order extra length for it. Use one kit per joint.
What does the Edge Guard do?
The Grass Barrier Edge Guard is a cap that fits over the top edge. It smooths out waves, makes the top edge look thicker and more finished, and makes the edge a little safer to brush against. It comes in a 22 ft length.
Can grass still get over the top?
Yes. Grass Barrier works below the soil, so trim any grass that grows over the top edge when you edge the bed.
Ready to order?
- Free shipping to the lower 48 states
- Orders before 2 pm Central on a business day usually ship that day
- 30-day returns
Grass Barrier by ProTech Plastic · protechplastic.com/products/grass-barrier · Reviewed October 2026