Geogrid inbetween blocks


Geogrid is a manufactured high strength reinforcement grid that comes in rolls of various sizes and strengths. It is composed of high-molecular weight, high-tenacity multi-filament polyester yarns that are woven together into a stable mesh. geogrid bi directional

Below are examples of different types of high quality geogrid available from SRW Products.

Types of Geogrid



  • Adds strength and longevity to your wall
  • Helps prevent wall failure
  • Resistant to biological degradation and naturally encountered chemicals, alkalis and acids.


  • Retaining walls
  • Steep Slopes/Embankments
  • Sub-grade Stabilization
  • Waste Containment
  • Void Bridging


Geogrids are made as either  bi-directional (bi axial) or uni-directional (uni axial).

Bi-directional geogrid has significant tensile strength in both directions. This structure also provides an ideal interlocking system for more effective force bearing and diffusion in soil. Some examples of bi-directional geogrid are the 3 Series and Universal Geogrid from SRW Products.

Tip: Bi-directional geogrid should be rolled out perpendicular or parallel to the wall.

Uni-directional geogrid have very high tensile strength and high stiffness in the machine direction with very low stiffness in the other direction. Uni directional geogrids provide stability and are often used in applications that has little to no loading in the secondary direction. Some examples of uni-directional geogrids are the 5 to 10 Series geogrids from SRW Products.

Tip: Uni-directional geogrid should ALWAYS be rolled out perpendicular to the wall.

This structure has a very high tensile strength. The tensile strength of the product can adapt to a variety of soil, is widely used reinforced reinforcement materials.


Retaining Wall GeogridThe soil behind retaining walls can exert a tremendous amount of pressure on the blocks so it is very crucial to use a high quality geogrid (such as one from SRW Porducts) in-between the blocks to help alleviate that pressure and keep the wall from falling over.

To better visualize how geogrid works think of yourself leaning over. Now imagine someone standing behind you and holding your shirt so that you don’t completely fall over. You are acting as the retaining wall, your shirt is acting as the geogrid, and the person holding your shirt from behind is acting as the Earth. Without the geogrid there would be nothing for the Earth “to grab” and keep the wall from tumbling over.

Geogrid also creates a reinforced coherent mass behind the retaining wall by stabilizing the soil.

To see just how well geogrid reinforces soil check out this one minute demonstration by Allan Block.



The test performed takes two cylinders of soil and applies vertical force to see how the soil performs. The first cylinder is just compacted material. The second is also compacted material with the addition of mesh screens to simulate the use of geogrid reinforcement.

Notice in the video how the geogrid reinforces the soil mass so that it can withstand much more force. It also helps the soil that is reinforced to act as one coherent gravity mass. If you consider a simple gravity retaining wall, the forces from the soil being retained must be retained by the mass of the wall blocks.

When you use geogrid with a retaining wall, the mass of the blocks and the additional mass of the reinforced soil helps to withstand the pressures behind the wall. This combined mass is what allows very tall walls to be built when using geogrid.

HOW TO USE GEOGRID IN RETAINING WALLSretaining-wall-geogrid-allan-block

To use geogrid in a retaining wall first follow the installation instructions supplied with the retaining wall of your choice., This includes foundation preparation, block alignment, core filling, drainage rock placement, back fill placement, and compaction. For a brief how to please check out our article on How to Build a Block Retaining Wall.

  1. Start the geogrid near the face of the block and roll out in one continuous piece to the back of the reinforced soil mass (no splicing). Butt together at edges — DO NOT OVERLAP GEOGRID.

Tip: SRW Universal and 3 Series geogrid are bi-directional and can be rolled out either perpendicular or parallel to the wall.

Geogrid Installation of Bi-directional and Uni-Directional Geogrid

2. Install geogrid under tension. Be sure to remove any slack by pulling the grid backwards from the wall face. A nominal tension can be maintained by staples or stakes, until the geogrid has been covered by at least 6 inches of structural fill.

Geogrid placement in walls

3. Place the next course of block on top of the geogrid. Back fill and compact the soil.

Geogrid inbetween blocks

Tip: Always back fill and compact one course of block at a time. Keep an adequate cushion of soil between the geogrid and equipment.

4. Repeat process until retaining wall is completed.


TLC Supply in Quincy, MA is your #1 place to purchase Geogrid for your retaining wall project. We carry several high quality Bi-Directional and Uni-Directional Geogrid reinforcements from industry leader SRW Products

TLC Supply also has a wide selection of retaining and free standing retaining wall blocks from Techo Bloc, Allan Block, KeystoneGenest, and Belgard

We are happy to answer any of your project questions, just leave a comment below!

 “Best Price, Best Advice” -TLC Supply,Inc.


10 Unique Hardscape Ideas

10 Hardscape Ideas You Can Do to Enhance Your Backyard Living!

Incorporating hardscape into your landscape design is a great way to add major curb appeal and value to your home.

There are many ways you can create an enticing and beautiful backyard and/or frontyard that your whole family will enjoy for years to come. Check out these ideas below!

Idea #1: Use various colors and textures to create eye catching paver patterns and mosaics.

Chevron Hardscape Pattern
Techo Bloc Borealis Chevron Pattern
Pavers Techo Bloc
Techo Bloc Travertina
Hardscape Pavers
Techo Bloc Antika / Blu Grande

Idea #2: Include custom design work by engraving your stone.

Custom Stone Fabrication
TLC Custom Fabrication

 Idea #3: Bring the waterpark to your backyard with permeable pavers by building a fountain play area for kids or pets.

Permeable Pavers
Belgard Permeable Paver Eco Dublin

Idea #4: Entertain your guests with outdoor kitchens, pizza ovens, fireplace kits, and recessed seating areas.

Outdoor Fireplace
Techo Bloc Mini Creta
Outdoor Kitchen Hardscape
Belgard Harmony Element Kitchen
Hardscape Outdoor Fire Pit
Techo Bloc Valencia Firepit

 Idea #5: Add decorative paver edging and cobble stones to a garden or create raised planters to keep pet’s out of your beautiful flowers.

Paver Edging
Techo Bloc Avignon
Hardscape Retaining Wall Stone
Belgard Retaining Wall Stone

Idea #6: Dress up a garden with natural stepping stone, garden stones, or slate pavers.

Natrual Stone Step

Natural Stone Step
Techo Bloc Maya Step

 Idea #7: Create the illusion of separate spaces by using different pavers in various areas and separating spaces with retaining wall systems or pillars.

Hardscape Ideas
Belgard Weston wall

Outdoor Hardscape Grill

 Idea #8: Light up the night with paver and outdoor lighting.

Hardscape Patio Ideas
Techo Bloc Raffinato
Cambridge Pavers
Cambridge Pavers LED Lights

Idea #9: Bring the resort spa into your backyard with natural stone and stone veneer.

Natural Stone Veneer
Natural Stone / Veneer
Natural Stone Veneer
Realstone Systems Shadowstone

Idea #10: Relax with the soothing sound of an outdoor water feature or pond.

Natural Stone

Techo Bloc Mini Creta

Start planning your springtime hardscape project with TLC Supply. We are open year round so come on down with your plans, pictures, and ideas. Beat the rush by planning early and let us dedicate our time to you so that you can create the wonderful outdoor living space you’ve been dreaming of all winter.

TLC Supply carries a wide selection of premium pavers from Techo Bloc as well as from BelgardCambridge Paving Stone, and Genest. Please visit our website to see even more hardscape and masonry products ranging from bluestone,granite,brick,natural stone,block,sand, and cement!

If you liked this page be sure to share it with all your friends! And for even more inspiring paver patios as well as backyard DIY projects and outdoor entertaining ideas follow us on Pinterest!

WAIT! Before you go check this out! You may even like our post How to Build a Paver Patio!

We are happy to answer any of your project questions, just give us a shout! Send us an email to or leave your comments below. 


 “Best Price, Best Advice” -TLC Supply,Inc.