How to Prep the Base for Artificial Grass

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Removal of Existing Grass 

Two weeks to a month prior to installation, begin shutting down sprinkler systems and stop watering the existing lawn. Unhealthy and dead grass will be easier to remove and can help you save on dumping costs. You can also spray the area with a weed killer to accelerate the process of killing the natural grass and existing plants. Don't wait too long after the grass dies to remove it as this can lead to heavy weeds flourishing in the area in the meantime. Areas with heavy weeds will result in more dumping costs and extra labor. 

About 2 in. of grass and soil will be removed from the surface to make room for the new base layer of your artificial grass installation. For DIYers, you can use an aluminum landscape rake to remove the dead grass and soil once it has dried up. We use professional sod cutters to cut natural turf. This way we achieve a smooth surface that allows for thorough compaction and prevents soil settling bumps in future.

Preparing Turf Base - Manufacturer Recommendations

According to manufacturers, the best and most effective base layer for artificial turf is a class II road base. They recommend removing 2" of soil and suggest removing a bit more along the perimeter where root systems are stronger. Before moving forward heavily apply weed killer to the surface. We also use a weed preventer that attacks the seeds. You can also lay a weed barrier cloth if you'd prefer. However, the weed barrier installed underneath the base is not very effective against weeds, and can often just be a layer that traps bacteria. We never recommend using weed barrier for pet-friendly artificial lawns, but instead a strong weed preventer when installing artificial grass.

Manufacturers then advise adding an even layer of class II road base material along the surface about 2-3" thick and heavily compacting using a stamp compactor. Prior to compaction ensure the road base is dispersed along the surface evenly. When compacting, move in circles around the surface rather than pulling it back and forth. Compact both clockwise and counterclockwise for the best results. Be careful when compacting near concrete edging and make sure you get into the corners at an angle to compact the borders securely. 

Preparing Turf Base - for DIY Installers

For DIYers, it's often hard to find access to heavy machinery and the materials needed to follow manufacturers' recommendations when installing the artificial turf base layer. For this reason, homeowners installing artificial turf themselves will usually prepare the sub-base layer a bit differently. 

To save money, we'd recommend avoiding renting expensive machinery when laying the base material and instead working with tools that can be easily handled by one person. The beginning of the artificial grass base prep will remain the same, remove the soil and apply a weed killer to the surface.

Use decomposed granite as an alternative artificial grass underlay, it's much easier to get ahold of than road base. Evenly disperse about 2" of DG with a push broom along the surface. Then use a heavy-duty roller to compact the surface. Roll along the DG in multiple directions for the best results.

To ensure your base won't wash away with rainfall, you must apply a stabilizer on the DG after compaction. This will provide you with a sturdy enough base to hold the nails when you're securing the artificial turf down. Skipping the stabilizer will be detrimental to the lifespan of your new artificial lawn. Allow the area to fully dry before moving forward with the artificial grass installation.  

Preparing Turf Base - Over Concrete

Artificial grass can be installed directly over concrete as long as the concrete itself doesn't cause drainage issues or create any obstructions to the design and layout that you're going for. To avoid mold, proper drainage underneath turf is a must when installing over hard surfaces.

Prior to artificial grass installation, we'd recommend chopping off any sharp edges of concrete to smooth the area and allow for easy gluing. Keep in mind that heavy professional adhesives may leave stains on the concrete upon removal of artificial grass! Even though stains may occur, we always recommend securing the artificial turf with glue to prevent wrinkles and movement as the temperature fluctuates. 

Preparing Turf Base - Pet-Friendly Lawns

Prepping the base for artificial pet turf is no different from the process for regular synthetic lawns. However, we'd recommend laying a 1/4" layer of Zeofill along the compacted base before laying down your pet-friendly artificial grass. Zeofill prevents pet odors by acting as a deodorizer and will trap ammonia smells from urine until you're able to flush out and sanitize the area. Remember, a weed barrier is not recommended when prepping the sub base material for pet turf.

If your artificial grass lawn has any dips, we'd recommend installing a french drain in that area to accelerate water movement. While this is not required, a french drain will help percolate liquids quicker and combat odors from occurring in pet turf systems. 

Preparing Turf Base - On Slopes or Hills 

When preparing the base for artificial turf on a slope or hill, there may be some added steps to ensure the slope is secure and won't cause the synthetic turf to slide and move over time.

Slopes up to 15 degrees

We'd recommend laying wire mesh, such as chicken wire, prior to adding your road base to the surface. The area will then be compacted to manufacturers' recommendations. This wire mesh used in conjunction with the base layer will provide added security when you install artificial turf. 

Slopes more than 15 degrees

For larger slopes, you'll need to use a stabilization membrane cell. Lay this on the surface prior to adding your road base. After compacting the road base, smooth the area by adding a small 1/2" layer of DG and then continue with base layer compaction. 

Preparing Turf Base - Putting Greens

The process of preparing the base layer for a putting green is quite similar to regular turf installation, but there are a few additional steps. Grading and leveling are extra important when installing a putting green. Gameplay and the ball roll can be negatively affected if the area isn't level. Also, because the pile height of putting green turf is so short,  inconsistencies such as dips and bumps will become much more visible.  For this reason, a professional installation process is recommended for backyard putting greens.

When installers are building a putting green, they'll also add a very thin layer of decomposed granite on top of the compacted road base to help smooth out the surface even more. 

Preparing Turf Base - Heavy Traffic or Drivable Grass

When preparing the base for artificial grass in an area that will be heavily trafficked or a space where cars will drive and park, the turf base layer will need to be provided with a bit more stability. To create drivable grass, you can use geotextile permeable pavers to provide additional support to the base. Prepare the synthetic turf base layer in the same way as manufacturers recommend, and lay these paver tiles along the surface prior to unrolling the fake grass. 

We hope this covers all the different base prep scenarios you may find yourself in when installing artificial turf in your space. Once the lawn is covered with artificial grass, it's nearly impossible to pinpoint base prep mistakes until it's too late and the installation is compromised. Always ensure the installation crew you work with uses high quality materials and prepares the sub-base properly. Ready to get your project started with InstallArtificial? Request a custom estimate below in 2 minutes or less! 

Frequently Asked Questions About Prepping the Ground for Artificial Turf 

Do You Put Underlay Underneath Artificial Turf?

Aside from creating a solid base for artificial grass installation, you may find that other artificial grass underlays are necessary for your intended use. Turf underlayments such as drainage layers, weed barriers, and padding can be laid beneath the grass to provide added comfort and help lengthen the lifespan of your new lawn. 

What Happens If You Skip The Base Layer For Artificial Grass?

Skipping the base layer for artificial grass can lead to several issues and may compromise the overall performance and durability of the turf installation. Likely problems when not installing a base include: poor drainage, an uneven surface, weed growth, and poor stability. Over time, without a solid base the soil will shift. This causes dips and sagging to occur which will become a safety hazard. 

What Is The Best Base to Lay Artificial Grass?

The best base material for artificial grass is Class II Road Base. This material is used in most professional installations because it provides a very solid foundation. However, DIYers who don't have easy access to this Road Base should use decomposed granite and a stabilizer for the base layer. 

What Should I Put Down Before Artificial Grass?

Before laying artificial grass, you must remove the natural grass and 2-3 inches of soil. Then you'll want to apply a heavy layer of weed killer before laying the base layer of either Class II Road Base or Decomposed Granite. Double compaction of the base layer is recommended to ensure the foundation is dense and strong. 

Once the base is set, you can add additional accessories such as drainage grids or padding layers if desired. For Pet Turf, a drainage layer is always recommended beneath the artificial grass to help with water flow and ventilation. 

What Tools Are Needed To Install An Artificial Grass Base?

To begin installing artificial grass and lay the base material, aside from the artificial grass base materials themselves you'll need: 

• Rake
• Shovel
• Wheelbarrow
• Nails and Stakes
• Landscape Fabric (Optional Weed Barrier)
• Plate Compactor or Lawn Roller
• Utility Knife 

Can I Use A Paver Base For Artificial Turf?

Yes, you can use a paver base for artificial turf installation, and it can be a suitable option depending on your specific project requirements. However, installing pavers is more expensive than the typical turf base material which is Class II Road Base so it may not be a cost effective base selection. Because of this, usually you'll find artificial grass installed over pavers only when they were already pre-existing in the space. 

What To Put Under Artificial Grass For Drainage?

To have the best drainage results, opt for an artificial grass that is fully permeable and allows water to escape through the backing material. There are also drainage grids available that lift the surface to create an air void for ventilation and water flow. Two popular artificial grass drainage grids are AirDrain and DrainCore. In severe cases where water drainage is top of mind or there are existing drainage problems, french drain systems can be installed. 

Other Common Questions About Artificial Grass

How do I Groom the Turf for Optimal Settling and Stability?

To groom the turf for optimal settling and stability, follow these steps:

1. Begin by using a power brush with heavy bristles. This brush should be used to brush against the grain of the grass. This action helps the grass blades stand upright in preparation for the next steps.

2. Next, it is time to apply the infill or durafill sand. Durafill sand is a suitable option as it is anti-bacterial and safe for both pets and children. Evenly spread the granules throughout the entire turf installation. This step not only provides a balance but also adds weight to the turf.

3. Once the sand has been applied, the next grooming step involves power brushing the turf once more. This time, the brushing should be done lightly. The purpose of this step is to gently force the Envirofill granules into the base of the turf. By doing so, the granules settle and create optimal stability for the turf.

4. Finally, it is important to follow up the entire grooming process by thoroughly removing any excess debris. This will ensure that the turf surface is clean and ready for use.

By following these steps, you can effectively groom the turf for optimal settling and stability.

How do I Apply Filler to the Turf Installation?

To apply infill to the turf installation, follow these steps:

Start by using a power brush with heavy bristles. This brush will be used to brush against the grain of the grass. By doing this, the grass blades will stand up in preparation for the filler application.  The best filler to use is called antibacterial envirofill sand. It is important to note that durafill/envirofill sand is safe for both pets and children.

Begin by spreading the infill evenly across the entire turf installation. It is crucial to distribute the granules uniformly to ensure a balanced appearance and to hold the grass blades upright. The infill also aids in giving the turf more weight, which contributes to its stability and durability. By following these steps, you will be able to successfully apply the filler to the turf installation, ensuring a well-groomed and natural look.

How do I Install Bender Board to Separate the Turf Areas?

For seamless installation of bender board to separate turf areas, follow these simple steps:

1. Prepare the area: Begin by clearing any debris, rocks, or vegetation from the desired boundary where you want to create a division between turf areas. It's important to ensure that the ground is level and ready for installation.

2. Measure and mark: Accurately measure the length of the boundary and mark it using stakes or flags. This will serve as a guide during the installation process, ensuring that the bender board is placed evenly.

3. Dig a trench: Excavate a narrow trench along the marked boundary. The depth of the trench should be half the height of the bender board, with an additional inch or two for secure installation.

4. Install the bender board: Carefully place the bender board into the trench, making sure it sits flush with the ground. This will create a clean separation line between the turf areas. The bender board should be flexible enough to accommodate gentle curves if needed.

5. Secure the bender board: Use stakes or anchors to secure the bender board in place at regular intervals, typically every 4-6 feet. Drive the stakes or anchors through pre-drilled holes in the bender board and into the ground to provide stability.

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6. Connect multiple pieces (if necessary): If your boundary requires multiple lengths of bender board, overlap the ends slightly and use connectors or screws to join them securely. It's essential to ensure a seamless connection between the pieces to maintain a neat and professional appearance.

7. Backfill and clean up: Fill the trench with soil, compacting it gently to provide support for the bender board. Smooth out the soil on both sides of the board to create a clean and smooth transition between the turf areas.

By following these steps, you'll be able to effortlessly install bender board and achieve a well-defined separation between your turf areas.

How do I Relocate Sprinklers and Modify Irrigation Lines if Necessary?

To relocate sprinklers and modify irrigation lines, follow these steps:

1. Begin by identifying any existing sprinklers that will not be used and cap them at the pipe level. This is crucial to prevent any leakage between the pipes and risers.

2. If necessary, modify the sprinklers' irrigation or drainage system. This may involve changing their position, adjusting their angles, or changing the drainage setup.

3. For relocating sprinklers, carefully choose new positions that are suitable for efficient water distribution. Consider factors such as plant requirements, landscape layout, and coverage area.

4. Modify existing irrigation lines. This could involve extending or rerouting the pipes to connect to the new sprinkler locations.

5. Once the new layout is determined, it is important to mark the locations of any unused sprinklers that have been capped to avoid depressions or low spots in the landscape. Backfilling the area properly will help ensure a smooth surface.

6. When working with wiring or electrical connections for the sprinklers, make sure to move them inward and away from any hardscape or perimeter by a distance of six to eight inches. This precautionary step minimizes the risk of accidental damage during the process of securing the turf edge with nails.

7. After moving the wiring, place it securely on top of the subgrade surfacing using u-nails. Taking care to properly secure the wiring will prevent any hazards and ensure the smooth functioning of the sprinkler system.

How do I Cap Existing Sprinklers That Will Not be Used?

1. Identify the sprinklers that are not needed for irrigation purposes. This may be due to changes in landscaping layout or water requirements.

2. Locate the piping system where these sprinklers are connected. It is important to cap them at the pipe level rather than at the rising point to prevent any potential leakage between the two.

3. Obtain appropriate sprinkler caps that fit the size and type of the existing sprinklers. These can usually be found at hardware stores or irrigation supply centers.

4. Turn off the water supply to the sprinkler system to avoid any accidental water flow during the capping process.

5. Unscrew the existing sprinkler heads from the risers or pop-up bodies. Use a wrench or a specific tool, if necessary.

6. Clean the exposed threads and ensure they are free from dirt or debris. This will help provide a solid seal when capping the sprinklers.

7. Apply plumber's thread seal tape or thread sealant on the threads of the sprinkler cap. This will help create a watertight seal and prevent any potential leaks.

8. Screw the sprinkler caps tightly onto the exposed threads of the risers or pop-up bodies. Ensure they are securely fastened to avoid any future issues.

9. Turn on the water supply to re-pressurize the system.

10. Inspect the area to ensure there are no leakages or irregularities. If any depressions or low spots are created during the capping process, back fill the area and mark the location of the unused sprinklers for future reference.

So, you&#;re interested in installing artificial turf in your yard. No more mowing or watering, just gorgeous green grass year-round! But before rolling out those synthetic blades, it&#;s really important to think about what kind of base goes underneath. A proper base is crucial for making sure your artificial lawn stays fresh and weed-free for years on end.

Let me break down everything you need to know about what goes under fake grass and also how to get that base prepped right.

The Key Ingredients for an Artificial Grass Base

When constructing a base for artificial turf, you need to bring together a few key ingredients:

• Landscape fabric &#; A weed barrier cloth can prevent weeds from poking through your turf if they&#;re an issue. It will also keep the dirt and rock separated, maintaining a stable base for your artificial grass. Just overlap the fabric panels when you lay it down.
• Crushed rocks &#; I&#;m talking 3/4 to 1 1/2 inch gravel. Crushed granite or limestone works great. These stones allow for drainage while giving stability.
• Rock fines or screening &#; Placed on top of the crushed rocks, these tiny rocks and dust will make a nice smooth surface.
• Infill material &#; Those artificial grass blades need some infill brushed between them to stay upright. Think silica sand or an anti-microbial infill like Envirofill. Spread a couple of pounds per square foot.

What will my lawn look like when you start?

Why Even Bother With Artificial Grass?

I know you&#;re probably wondering why go with fake grass in the first place. Here&#;s why it rocks:

No more mowing or watering &#; getting artificial grass installed at your Texas home is a great way to save money and time on watering.

It&#;s super durable &#; If you have kids, dogs, or pesky in-laws, artificial grass is incredibly low maintenance so it&#;s easy to keep up with.

Looks very realistic these days &#; the right turf can fool your neighbors and even if it doesn&#;t, who cares?

Stays green rain or shine &#; no more brown summer grass, the beautiful green color will stay and it doesn&#;t fade over time.

No need for fertilizers or pesticides &#; safer for people and pets and better for the environment as well.

Constructing the Ideal Base Layer

You&#;ll want 2 to 2.5 inches of crushed rock aggregate laid over a flat, stable surface. Compact it down really well with a plate compactor. The uniform gravel pieces create a nice flat pad.

Then top it off with the small fine rock material. Decomposed granite is a great choice for your top base layer aggregate. It compacts nicely and the rock particles interlock for stability. Other small, crushed rocks like limestone screenings would also do the trick.

Prepping the Ground for Artificial Turf

Installing that base layer takes some ground prep:

1. Clear away any grass, plants, or debris &#; remove 2-3 inches of topsoil while you&#;re at it.
2. Grade and level out the dirt &#; fill any low spots or holes.
3. Compact the bare subsurface with a compactor
4. Optional but recommended &#; lay landscape fabric over the leveled ground before the rocks.
5. Spread your crushed rock aggregate 2 inches thick.
6. Compact the daylights out of the gravel layer to lock it in.
7. Add the fine rock to get to your finished grade. Approximately 1 to 2 inches thick
8. Smooth over any uneven spots for a perfectly flat base.
9. Mist the finished base with water and compact one more time.
10. Doing this groundwork prevents problems like wrinkles or rippling down the road.

Skipping the Base Layer? Don&#;t Do It!

I know it&#;s tempting to just throw down some artificial grass over bare dirt or concrete without building a proper base layer. But let me tell you &#; skipping the base is a bad idea that can lead to major headaches down the road.

What kind of problems can crop up without a solid base? You may end up with major drainage issues as water can&#;t flow through and pools on the surface. The ground can settle unevenly underneath, causing unsightly bumps, dips, and divots in your turf.

Without a stable foundation, you&#;re much more likely to get rippling, raised seams, and other distortions as the artificial turf shifts. Weeds will also have an easier time poking up from the bare ground below. Even if you securely glue or nail the fake grass initially, it will fail prematurely as the unstable subsurface moves around beneath it over time.

Do yourself a favor and do it right from the beginning by constructing a proper base &#; your lush artificial lawn will thank you for years to come.

How to Apply Filler to Turf Installation

Once your artificial grass is rolled out, you need to apply infill material between the blades. Here are the steps:

1. Use a stiff brush to comb the blades upright and in different directions. This preps them for the filler.
2. Spread silica sand or other infill evenly over the turf. Aim for 2-3 lbs per square foot.
3. Gently brush the infill down into the grass blades&#; base using light, multidirectional strokes.
4. Remove any excess material left on the top once the infill is worked down into place.
5. Follow up with more brushing once the turf is in use to smooth and redistribute the filler.
6. Properly applied infill ensures a lush, natural look and feel.

Do I Need Irrigation for Artificial Turf?

One of the great perks of artificial turf is that it doesn&#;t need regular watering. However, there are a couple of cases where installing irrigation can be useful:

• In very hot climates, occasional misting helps keep the turf cool and fresh.
• For turf on a slope or embankment, irrigation provides added stability.
• Nearby real grass or landscaping may require some watering overlap.
• Synthetic grass around swimming pools benefits from occasional rinsing.
• So, irrigation isn&#;t mandatory but can be worthwhile depending on your climate and specific needs.

The Takeaway: What to Put Underneath Artificial Grass

When installing artificial grass, don&#;t just focus on the lush synthetic blades you see. Understanding what to put under artificial grass will ensure that your yard holds up against anything Mother Nature throws at it.

A properly constructed base keeps your artificial lawn flat, green, and thriving for the long run. Follow this advice and enjoy your backyard oasis!

Are you interested in learning more about Residential Turf Grass? Contact us today to secure an expert consultation!