Retaining Wall Installer

Retaining walls present an ideal solution for outdoor spaces with slopes or hills. Our team of seasoned experts collaborates closely with you to create and install a personalized retaining wall that aligns with your unique requirements while staying within your budget.

Beyond addressing erosion and drainage issues, retaining walls serve as visually striking enhancements for your outdoor area. We provide an array of material options, including natural stone, brick, and concrete blocks, allowing us to craft a distinctive and aesthetically pleasing retaining wall that harmonizes with your home’s style. Additionally, we can integrate landscaping and lighting features to elevate the overall appeal of your retaining wall.

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Benefits of Segmental Retaining Walls

Segmental Retaining Wall systems are designed to be flexible yet rigid structures. They are built with wall blocks designed to withstand the surcharge or pressure placed on it from behind the wall. These wall blocks have engineered drawings provided by the manufacturers that are followed during the installation process to ensure the longevity of your retaining wall. The final product is both functional and aesthetically appealing.

Cross-Section of a Segmental Retaining Wall

Compacting the subsoil ensures we are building on top of a firm foundation that will not settle.

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Geotextile separates the subsoil from the base material so that there is no contamination between the two.

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We install and compact 6″ to 8″ of 3/4″ angular crushed clean stone for our base material.

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A perforated pipe is installed to collect incidental water and remove it from the system.

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A drainage area behind the wall ensures that water moves freely through the system without collecting in behind the wall and putting pressure on the wall.

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Wall units are installed on the base material with a minimum 6″ embedment. A batter can be placed on the wall that sets the wall back to add to the resistance to the force being placed on the wall.

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A cap is adhered to the top of the wall and topsoil is placed behind it on top of the non-woven geotextile.

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After the excavation, we compact the subsoil so that we are building our base on a foundation that is not going to settle.

Geotextile is laid to separate the subsoil from the base material to ensure no contamination and reinforce the base material. Geogrid is also used to help stabilize our base material.

The base material is installed and compacted. The depth depends on the project. For patios and walkways we install a 6″ to 8″ base and for driveways we install a 12″ to 14″ base.

The wall block is leveled on the base material and built up with a cap placed on top to finish the wall. A minimum 6″ is embedded below the final grade to ensure a stable wall.

A drainage pipe is installed behind the wall to capture any incidental water and to exit it from the system.

A drainage area behind the wall is installed along with the wall with 3/4″ clear stone (no fines) so that water moves through the system with ease.

How We Install a Retaining Wall

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Step #1: Preparation

Our process initiates with a thorough property survey, assessing the length and height of the proposed retaining wall. The height is especially important as it helps us determine the proper retaining wall block choices and the engineered drawings that the block should be built to. Following this assessment, we mark out the designated area and order locates.

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Step #2: Excavation

The depth of our excavation is determined by the depth of the base (6″ to 8″), plus the depth of wall embedment (minimum 6″). The width of the excavation is determined by the base extension in front of the wall (6″), behind the wall (12″), and the depth of the wall blocks. With these calculations we can dig a trench for our retaining wall.

Step #3: Base Preparation

The first step in base preparation involves compacting the subsoil, applying geotextile fabric, and layering with appropriate aggregate materials, tailored to the selected installation technique. Following this, a one-inch screed layer is added to create a level surface, preparing it for the installation of the initial course of wall blocks.

Step #4: Initial Course

The wall blocks are leveled on top of the screed layer. This is te most crucial step to ensure your wall is level from one course to another. We use a mallet and torpedo level to achieve perfection and double check with an 8 foot level over a longer area.

Step #5: Building Up the Wall

As the wall courses are built up, the drainage area in behind the base should follow at the same time. This drainage area is backfilled with a 3/4″ clear stone (no fines in it) so that there is no build up of water in behind the wall. A drainage pipe is also placed in behind the wall to catch the water and move it out of the system. As we backfill we also compact the aggregate. Geogrid is also installed into the backfill if necessary.

Step #6: Caps are Adhered

Once the retaining wall has met its final height, we adhere the caps onto the top of the retaining wall and install under cap lighting if included. We then wrap the non-woven geotextile forward from the backfill area to the caps and install soil on top of the geotextile to finish of the final grade.

Step #7: Finalize

We apply any finishing touches to your project, meticulously clean the area, and if needed, add seed and topsoil to leave your property in even better condition than when we arrived!

Frequently Asked Questions

For paver patios and walkways we dig 10″ to 12″. This is the depth of the base, bedding layer, and paver height. For driveways we dig an additional 6″ to 8″ more for additional base depth.

We prepare a minimum 6″ to 8″ base for our retaining walls. This may increase depending on the amount of step ups or downs there are in the wall.

The trench width is a minimum of 26″ and includes the minimum 6″ in front of the wall block, the depth of the wall block, and the minimum 12″ of drainage area in behind the wall.

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Geotextile is a specialized fabric employed to prevent contamination by separating the subsoil from the base material and reinforcing the foundation.

In the case of retaining walls, we use a non-woven geotextile to separate and promote drainage.

Geogrid is grid-like roll of geosynthetic materials that is used to stabilize soil. Uniaxial geogrid has strength in one direction and is used in retaining wall applications while biaxial geogrid has strength in two directions and is used in paver applications.

Geogrid stabilizes the aggregates by locking them in the apertures or holes of the grid system.

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Open Graded Base consists of aggregate material that is clear of fines. This allows the water to flow through the system with minimal friction.

Dense Graded Base has fines in it. It is still a free-draining material, but it will hold onto moisture for longer periods of time than Open Graded Base.

That depends on the application. An open graded base allows for the flow of water because the aggregate is clear of fine materials. A dense graded base has fine material mixed with the aggregate. A synthetic base consists of polypropylene sheets that are installed on top of a bedding layer which cuts the excavation depth in half.

Choosing the best base material to use depends on the application of the project.

The white staining is called efflorescence. This is a natural by-product of concrete. It is caused by moisture pulling minerals to the surface of the concrete.

If your project is installed with a properly draining material for the base, the efflorescence will eventually disappear. We do have a cleaning service to remove the efflorescence.

We do our best to keep our job sites as clean as possible. During the cutting phase, the job site will be dusty. When possible, we cut using water to keep the dust down or with our dustless table saw.

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