Sure, they offer a strong base that easily will hold up for long because they have similar endurance and size features. CMB is the cheapest and most used sub-base for artificial grass. Just add your crushed granite stone sub-base and compact it very well, and the depth should be between 25 to 50 millimeters. View complete answer on purchasegreen.com The Ultimate Guide to Protecting and Preserving Artificial Turf, 8565 S. Eastern Avenue, #150 They keep our fo, Every car owner has different standards when it comes to keeping their vehicle clean. Whether you want to make your lawn stand out from the crowd or your artificial grass look perfect, the truth is that it requires a solid foundation. Artificial grass is a great way to keep your yard looking good all year long. The expense of using this type of sub-base will vary depending on what area you live in. Ideally, the base should be reduced to around 90% of its original depth, it should feel like concrete but retain its ability to drain. No permanent installation is needed for balconies and other small hard floor areas. Would love your thoughts, please comment. Knowing what to use for your artificial grass sub-base is simple. Level your sub-base for artificial grass with the most efficient machine. B. The followings are the recommended amount for optimal depth for your sub-base depending on the intended usage: MOT Type 1 comes in ton bags or loose loads. Where there are harsh winters like Minnesota or Wisconsin, at least 6-8 inches of the trench is needed to accommodate extreme weather that expands and contracts the grass. Lets discuss each of the options in detail: Typically used in landscaping applications, crushed miscellaneous base (CMB) is an aggregate material featuring gravel, sand, asphalt, and concrete. What sand do you put under artificial grass? At the same time, its durable and resilient to water flow, and will not move around in harsh weather conditions. The kind of yard that makes your neighbors jealous doesnt have to take a lot of work. You dont need to install a sub-base for concrete surfaces because you wont be able to dig. Once youve done the hard work of preparing the ground and sorting out which sub-base to use, you can go ahead with installing your chosen artificial grass. This can lead to mold, mildew, and in the worst cases: accidents. This means you will need to dig about 40mm into the soil, then a Sub Base of Granno or Sharp Sand, and then spread the ZeoZorb on top. Use your hose and sprinkle the installation space with water. Avoid this by carefully planning your drainage before artificial grass installation. If your turf does not drain well, it will make water collect on the surface leading to mold and mildew growth, and in the worst cases, accidents will happen. Uneven surfaces can create dips in your lawn and cause accidents. This is sometimes referred to as Grano dust or 4 Its simple: The base provides the structure for the grass. Originally, when artificial grass was installed in a residential environment, sharp sand was used as a laying course. Depending on the intended usage there is a minimum recommendation for optimal depth for your sub-base: MOT Type 1 and stone chippings are both supplied in ton bags or loose loads. Want to learn more about artificial grass installation? 3. Within the makeup of this material there are more finer, smaller particles. However, determining the typical base required is not out of place. Roll your gopher wire out on the installation area little by little. by Marina Avraam | Posted on 20 05 2021. Fill in your postcode to get started: Image source: shutterstock.com/Faidhi haiyee. This is especially beneficial for those living in areas where people sit on balconies above playing fields etc. Visit the Solution Center to Explore Articles. Good luck with your project.. Therefore, if you dont want to do the work as DIY, but want to have the best sub-base for artificial grass, Different sub-base materials have unique needs they can meet in your home. Because its so loose, this drainage will eventually wash away the sharp sand. Youll notice it by the ridges and dips you see appearing on your lawn. To provide a solid (compacted) and smooth surface to lay grass In the turf industry, there is WebDecomposed Granite (DG) If you want to install a putting green, Decomposed Granite can be the best choice as a sub-base. The sub-base of your artificial grass is the layer you place on top of the soil. The good thing about the Ministry of Transport Type 1 (MOT type 1) is that it compacts into a more rigid surface and prevents the ground from sinking. Artificial turf is a lifestyle investment for private homes, commercial apartments, schools, and other project development sites. This sand is often made specifically for artificial grass. Your artificial grass base should be either MOT Type 1 or 20mm stone clippings. How to Install Sub-Base for Artificial Grass . It takes a lot of digging, and youll need a solid foundationof both installation knowledge and literally underneath your grass. Can FG Boots Be Used On Artificial Grass. The pros have got the know-how and the right tools to install expertly both real turf and artificial grass in your back or front garden. For example, if your lawn is going to be 50mm thick you will need one ton of sub-base for every 10 sq.m. MegaGrass is The Grass of the Future. If you want, you can put a thick material between the artificial grass and sub-base material, followed by your synthetic lawn. Many people think AstroTurf is a general term for artificial grass however it is a registered trademark. This means it naturally expands and contracts depending on how wet it is. Explore. If you have the budget, you can rent or buy a vibratory plate compactorthe most effective and time-saving option. Some varieties come from concrete, asphalt, or wood, but the most common types are CMB, Class II road base, or decomposed graniteand theres a good reason. For more information, check out our privacy policy. https://megagrass.com/blogs/guide/installing-the-base-for-artificial-grass Check to see if there are puddles that form. Areas to be installed under trees or shaded by other plants should have a thickness of 200mm as the grass will not receive enough light to bind correctly. The sub-base and the process for installation will vary according to where youre intending to lay your artificial turf. The quality of your artificial grass relies on the quality of your base. WebOur artificial grass installation service area includes rural and metropolitan areas, such as the greater New York and Philadelphia. Types of Artificial Grass Sub-Base . While they offer a cost-effective way to install an artificial grass lawn, care must be taken when filling these voids, so proper grading is achieved. This can result in significant gaps within the base, leading to pockets forming, allowing water to accumulate, and possibly causing shifting issues where the grass meets another surface, such as a border or driveway. The ants will excavate the soil to build nests underneath your lawn, and this disruption will cause lifting and unevenness that only gets worse over time. Purchase artificial grass the size of your balcony plus a few inches on every side. https://www.almostgrass.com/best-sub-base-for-artificial-grass In other words, a good artificial grass sub-base material provides your lawn with a perfect mix of stability and good drainage, as well as long-term durability and resilience. Today. Grano is the more expensive option for your sub-base. As the base for artificial grass installation, the sub-base material will give your new lawn structural stability. Since there are about three different types of sub-base for artificial grass, your synthetic grass base should be either one of them, and it could also be either MOT document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Benefits of having a Good Quality Artificial Grass Sub Base, Artificial Grass Edging: A Complete Guide, How to Stop Your Dog From Eating Artificial Grass. The best sub-bases for artificial grass will not only increase the lifespan of your investment but also maximize the benefits of installing artificial turf in the first Youll need to make sure that the concrete is clean and free from weeds and debris, and it should have suitable drainage. Wondering what to put under artificial grass? WebPreparation. You can avoid having a big puddle by getting yourself prepared. Turf can be used in concrete, patios, decks, and pool areas. Using a wheelbarrow or shovel, scatter your base material. They possess certain, The pride and joy of any home our gardens are the tranquil spaces we love and enjoy. Shock pad underlay is especially recommended when youre installing artificial grass in sporting arenas or in schools and play areas. The decomposed granite or limestone chippings allow for the best drainage of synthetic grass. For example, installing fake grass on to natural grass or soil varies slightly compared to fitting artificial grass on concrete or decking. You dont have to worry about searching for installation materials! But its only professional artificial grass installers that can advise you better. This is sometimes referred to as Grano dust or 4-6mm dust. Use a measuring tape to size up your area. Some varieties come from concrete, asphalt, or wood, but the most common types are CMB, Class II road base, When covering a flowerbed or an area where they remove a big tree or bush, you know roots can take longer to decay and, as they do so, the soil can soften, leading to sinking. If there are, drill drainage holes. MOT Type 1 is granular, and it offers a solid sub-base owing to its high compaction level. Commercial applicationslike golf courses or athletic fieldsmore commonly use this sub-base. If youre looking to install artificial grass by yourself or want to learn about the whole process, this guide explains the concept. CMB is a mixture of recycled concrete and asphalt and a sand-gravel blend of varying sizes of 0.75 inches in diameter. We can offer a special Emergency Delivery service within 3 hrs anywhere within the M25 for 99.00 (All prices exclude VAT), Astro Neptune 30mm (School) Artificial Grass. The best granite dust sub-base 1. This is usually delivered to your home and you only need to move it to the intended area. Enter a zip below and get matched to top-rated pros near you. The sub-base is a layer of compacted sand, decomposed granite, river rocks and gravel beneath the artificial grass. CMB remains the default choice for most home installations. Or, how to spend your time at home and maintain it in times of social distancing. The best base for turf is one that can absorb and drain water from the surface! Its mostly a sand and gravel mix, but some installations might require the use of asphalt, concrete, or wood depending on the application and conditions. What Is the Sub-Base for Artificial Grass? But while the look of your lawn is important, what goes on under the surface is just as critical to the successful installation and long-term service life of your artificial grass. Is Artificial Grass Waterproof? Decomposed granite is more porous; thus, it gives a smoother finish than CMB. Artificial grass materials have porous media so that water can pass through them quickly. The sub-base is the area thats underneath the artificial turf. But sometimes its unavoidable as a group of moths deci, Rodents are unhygienic and nobody wants them in their home as they set about leaving various forms of damage in their wa, Our homes are precious to us and are arguably our most treasured investments. Its somewhat similar to CMB, but comes with stringent testing and quality checks by the manufacturer. If your artificial grass lawn is going to be used by dogs, we recommend 10Kg/m2 of ZeoZorb below the artificial grass, and 10Kg/m2 above the artificial grass. Need professional help with your project? Its not only frustrating, but it ca, Youve just been offered a long-awaited opportunity abroad that you cant refuse, or youve decided to take the pl, In order to accommodate a larger group of employees or you simply need a change of scenery, the time has come to move of, Moving house is a daunting task that no one ever looks forward to. Registered address: Astro Warehouse Ltd, 51 New Cavendish Street, London, W1G 9TG Collection Depot: Astro Warehouse Ltd, Southhall, UB1 3AJ WebPurchase Green Artificial Grass 2.37K subscribers One of the most important parts of a proper artificial grass installation is a proper sub-base. If the base is not installed properly, the turf structure might fall apart. Your sub-base also gives strength to your fake lawn to cope with the traffic and it is essential in aiding drainage, to prevent pools of water forming and sitting on your new synthetic grass. The best sub-bases are a mixture of gravel and sand. Unlike a typical soil sub-base, concrete is hard. You will find our recommendations and some further useful information below. Before moving forward heavily apply weed killer to the surface. Once youve removed the existing lawn, you should install a weed membrane to prevent any weeds growing through your new false grass. A shovel can be used to lay sand on your area but a sand spreader helps make the job easier! Heres what you need to know. Add required drainage pipes for easy water clear out. Order yours here. Choosing a sub-base for your new artificial grass is one of the most important decisions youll make during installation. The answer is definitely NOT! CMB material remains the number one choice for almost every home installation. Mop the floor with water and anti-bacterial cleaners or bleach to ensure that its spick and span. It acts as the foundation for your synthetic turf and needs to consist of the right materials to ensure proper drainage. These days, there are many styles and set of possibilities to match your needs. According to manufacturers, the best and most effective base layer for artificial turf is a class II road base. Its generally the most affordable option and compacts easily, making it a popular choice in landscaping. Ensure that rainwater and other liquids (like dog pee) have somewhere to go. But does artificial grass look real nowadays? Finding the amount or depth of the sub-base your space needs before covering it with artificial grass is the job of experienced artificial turf installers. 3. Artificial Grass Sub Base ensures that your lawn stays lush and green with an even surface for any turf. When it comes to fitting a sub-base for an artificial lawn, there is no such thing as best. Fantastic Services 2022. What is the best sub-base for artificial grass? This is an additional layer of protection to avoid weeds and other pests. Contrary to popular belief, artificial turf doesnt necessarily need to be installed over soil or dirt. https://blog.fantasticservices.com/what-sub-base-to-use-for-artificial-grass In general, your sub-base layer should be two to four inches deep. So, the CMB might not be the best option if you live in an area with heavy rainfall or want your pets urine to drain faster. It is compacted to create a well-graded sub-base that allows proper drainage and stabilizes the sub-grade surface for your lawn to be installed on top. Save my name, email, and website in this browser for the next time I comment. However, if youre worried about drainage, we would recommend decomposed granite instead. But if it doesnt lead to a drain or canal or waterway, your lawn could look like one big puddle. A local artificial grass company should be able to tell you the exact amount of sub-base needed for your project. Therefore, before installing your artificial grass sub-base, you first must prepare the area. Heres what you need to know. Here are few advantages of installing a good quality sub-base for artificial grass. Just contact us anytime and well handle the rest. It may look simple enough, but installing fake turf is not the same thing as putting an outdoor rug on your patioeven if theyre both made of plastic. It is a common experience to use type 1 in dips bigger than 50 millimeters, especially in areas that require many rounds of leveling. You will have to check with your local store and determine what amount you would like to order. The first thing you do before installing your grass is to kill grassroots and weeds. Even though ton bags are named so, they are usually less than a ton, depending on the material they contain. Sub-base is becoming more popular among those laying their lawn. Stone chippings come with a higher cost, but they do achieve a smoother finish than CMB. It adds longevity to your artificial grass by protecting its primary components, which helps keep them looking at their best condition for more years than without one. Theres the associated packing, folding, moving, bo, Its winter time and youre wondering how to organise your wardrobe so that your favourite summer clothes are put aw, Whether youre moving house or are planning to relocate abroad, there are numerous factors to take into account in you, An insect infestation is the last thing you want to deal with. Many installers use sharp sand for artificial grass as the laying course, but thats a huge mistake! Numerous types of sub-base can be used when installing artificial grass, but the three main types are mostly preferred by installers and manufacturers worldwide. Oh bother. Our companys generosity is evident across all its platforms. What Sub-Base To Use For Artificial Grass? The individual grano dust particles are around 6mm in diameter and installs at a depth of 1-inch. Explore. Today. areas like Arizona and Nevada already have decomposed granite and crushed rock beneath it, so there is no need to add base materials. In other words, the best sub-base for artificial grass is the one that always absorbs water and drains it from the surface. If artificial grass is installed correctly in your lawn, your turf will last longer! For soil a suitable, stable sub base is recommended you should always install your artificial grass on an aggregate and sharp sand base. The base of the artificial turf also referred to as the sub-base is the foundational surface of any synthetic turf. Touch device users, explore by touch or with swipe gestures. Sharp sand is coarse and has larger grains and is used for concrete. Your artificial lawn comes with drainage of up to 10 to 12-gallons a minute. Perhaps one of the most vital steps in the installation is using the correct type of sub-base. Cover your entire area with foam/shock pads. Use a plate compactor or plate tamper to compact the surface with. If you have any questions about our service area, feel free to contact us or call us at (717) 799-7311. A sub-base replaces the traditional soil base with a stable, non-expansive layer. Most of its good features include compacting well, being more affordable, and producing a solid foundation. But if budget is an issue, CMB will suffice for most domestic applications. From artificial turf nails to artificial grass infill, you can add them all into your cart and order all at once. But it is highly advised to put foam or shock pads underneath your turf to avoid any injury. Because concrete is a hard surface, youll need the foam/shock pads for support in case anyone falls on the surface. Although you can install fake grass on top of the ground directly, we do not advise it. It is more costly, making it ideal for installing green applications. It is costly, so it is not suitable for landscaping applications. Sub-base doesnt expand or contract. But what happens when the fence gets in the way of an otherwise go, So youve decided to embark on a landscaping project but dont know where to begin? Add additional base if needed. Before you install your sub-base, you first have to prepare the area. Las Vegas, Nevada 89123. Wet soil will result in soft spots and divots in the lawn, causing the grass to lift away from the soil and create air pockets. The material is generally sold in loose truckloads or bags by the ton. For domestic applications, we recommend a minimum depth of 50mm. Be the first to hear about our exclusive offers and discounts. It is primarily a blend of gravel and sand. Depending on your location, your material and depth could vary. Thinking about getting an artificial lawn? Thats where sub-base comes in. If on top of poorly draining soil, install an efficient drainage system. Unfortunately, it is a bad idea to cover the soils surface with a fresh coat of artificial turf. Today, manufacturers run large granite rocks through a DG process to produce the end product. Make sure you remove 60-80mm of soil before you lay down the sub base and new artificial turf, as this will result in a Therefore, the correct installation of artificial grass in your lawn leads to long-time performance. Decomposed Granite/Limestone Chippings, Your Laying Course: Granite Dust vs Sharp Sand. It is also recommended to demolish your concrete surface and follow the sub-base installation for soil instead. However, you might need to get a weed membrane or a foam shock pad underlay. If your pets and kids spend any time playing on the lawn, the foot traffic will loosen the sharp sand over time, and cause dips and creases in the material. However, if you install your artificial grass on an area with no native grass previously, you may need to use type 1 sub-base material. Get A Free Turf Foundation Quote For Your Backyard. Lets find out! With artificial grass, you can go green this summer and benefit from the benefits of this low-maintenance landscaping solution. The purpose of your laying course is to provide a smooth, level and flat surface to lay your synthetic grass. If they dont drain quickly, fluids will collect and stay on your lawn and breed unwanted visitors such as mosquitoes, cockroaches, etc. When it comes to how much sub-base you should use for artificial grass, we generally recommend a depth of 2 to 4 (50mm100mm), with a thicker layer for heavier use. Why install artificial grass over real grass? The advantages include saving money and time, especially on lawn maintenance, and it can also improve lifestyle and help with environmental issues. Low maintenance generating savings on time and up-keep costs. However, if the water doesnt drain quickly, it will cause your lawn to look like a big pool of water. There are many types of sub-base options available for your project; its worth doing some research before you decide what type to use to get the best possible results. This ensures the fragments are uniform in size. The sub base for artificial grass is a crucial component to the success and longevity of an installation. Find a professional to help you out. Also, a big problem with sharp sand is that it moves underfoot. Both decomposed granite and limestone are porous, allowing optimal drainage of your artificial grass. How many rivers have we cleaned? Heres what you need to know. It is a cost-effective solution for artificial grass installations, ensuring your lawn wont burn and have a longer lifespan. This can lead to uneven surfaces, not to mention it can put portions of your base to waste. Our expert team has tested all the options. The market value of the artificial grass installation industry is worth more than 2-billion dollars. Granite or limestone dust are usually referred to as grano and you will need a 25mm laying course of it. Despite this, you end up with a material that drains well, and thats a top priority for the long-term health of your lawn. They may even recommend a laying course, an additional layer of granite dust or sand that goes over the sub-base to make the surface even flatter and smoother. 7.Sub-Base: The Foundation of Great Artificial Grass Lawns Author: Sub-Base: Publish: 17 days ago Rating: 5 (545 Rating) Highest rating: 3 Lowest rating: 1 Descriptions: CMB is a blend of recycled concrete and/or recycled asphalt and consists of a sand-gravel mixture of varying-sized particles up to of an inch in size. The type of material, depth, and slope can have a profound impact on how long your project will last, in addition to other factors like weed control and water drainage. Let's look at each of the options in detail Pinterest. To calculate how much aggregate will you need for the sub-base you first need to know the size of your required base. Too much sand can cause dips when your artificial grass is installed. So, this is where Fantastic Services can be of your assistance by providing you with a professional turf laying service, done by experienced and multi-skilled landscapers. Although it comes a bit more expensive compared to real turf, once laid, it requires a minimum amount of maintenance. We also use a weed preventer that The only home improvement newsletter you will ever need! However, it has a couple of downsides as well. Weed killers need ample time to work. Make sure you remove 60-80mm of soil before you lay down the sub base and new artificial turf, as this will result in a perfect installation. Can You Paint Artificial Grass? If your location experiences very light rain, drainage gaps every six inches around the perimeter should be enough. So, why do you need to install a sub-base for your lawn? These sub-bases are made up of fragments that weather and fall away from the main rock body (either granite or limestone, and sometimes a mixture of both). Artificial grass installation can be a rewarding investment. The same considerations would apply, though, namely drainage and ensuring that your turf is laid out evenly and securely. Without it, you risk having your fake lawn deteriorate in as little as five years due to weathering or damage from foot traffic. Many homeowners have a question when considering artificial grass is whether or not it will need a sub-base. Since there are about three different types of sub-base for artificial grass, your synthetic grass base should be either one of them, and it could also be either MOT Type 1 or 20mm stone clippings. You'll receive a FREE coupon to reimburse your shipping cost when you buy your next product. The first step to installing artificial grass is to establish a sub-base, and then youre ready to go green. Our helpful installation guides give you easy to follow advice at each step in your project. Contact us today to get your free samples! The sub-base also provides good insulation, preventing hot spots that can lead to premature wear or burns since there are no rocks. This sub-base material is complex to source and takes much effort to smooth down. Do this at least two weeks before your desired installation date. It adds a layer of protection from weed infestation, which helps to keep your lawn looking pristine and free from undesirable weeds growing on it. Artificial grass is an eco-friendly option for every home. They wash and dry our clothes and dishes. Once your decking or concrete area is clean and dry, you can continue with the next step of installing your underlay. If you dont get a proper sub-base installation, youre going to end up regretting it in a few months. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'almostgrass_com-medrectangle-3','ezslot_6',153,'0','0'])};__ez_fad_position('div-gpt-ad-almostgrass_com-medrectangle-3-0');The reason is quite simple: With artificial grass, your lawn looks great year-round! Can I Lay Artificial Grass Directly On Soil? Double check your area for high and low spots, fill or flatten if uneven. Tired of lo, Until theres a problem, we dont realise the importance of our plumbing system. WebDec 5, 2020 - Don't destroy your lawn with the wrong sub-base! Astro Warehouse is NOT associated with the AstroTurf brand, our products are all Astro Warehouse branded. Here are the conditions that favor the different artificial grass sub-base types: You can use crushed granite sub-base in the following areas: In the same vein, the MOT Type 1 sub-base finds application the following areas, thus: Using the MOT Type 1, you should always add a 25mm layer of crushed granite on top for drainage and leveling purposes. At Artificial Lawn Company, we mainly use our own special mix of crushed granite aggregate, which is why you can also use limestone. Locked yourself out with the key left in the lock on the other side? Fence it as a guide so your turf wont crawl out of its designated space. You need a base to install it on the soil and dirt. On the other hand, it has a gravel structure so that it can break down easily and conform to the ground structure. This can help you transport your sub-base materials quicker all over the area. If youre not careful, youll find it challenging to deal with such a problem later on. Hand stamps can also be used at an affordable price. Spray the area with a non-toxic weed killer you trust. If there are different sections of foam or shock pads (as opposed to a whole roll) tape them together with masking tape. All rights reserved. Like 1. Tarmac Grano dust, Bulk Bag Price: 59 www.diy.com View offer Place this on top of your MOT Type 1 for the perfect artificial So, if you want to install artificial grass on any surface, chances are youre not going to change the base. However, due to its expensive nature, the class II road base is not required for the domestic needs in your backyard. It packs together well but remains permeable, allowing for optimal drainage. Weve put together this sub-base calculator so you can easily work out exactly how much hardcore and grano youll need for your artificial grass installation. Another critical element you need to consider is this; it is not advisable to lay artificial turf directly on top of the soil, especially if there was previously a natural lawn in that area. Areas that are mostly shaded should have a minimum depth of 100mm. Work quickly because the glue hardens fast. (Please read T&Cs for delivery info). Many homeowners are worried about fake, tacky-looking artificial grass. If you want help making this decision or need more information about what options are available to you, please write in the comment section; we will surely make your selection far more straightforward. Then, you can use crushed granite stone for the remaining spots. The best sub-bases are a mixture of gravel and sand. Before the artificial grass base material. But, if you install the synthetic grass sub-base material incorrectly, it could lead to the formation of lines and gaps in your turf. For instance, if your lawn is going to be 70mm thick, you will need one ton of sub-base for every 12 square-meter. Crushed granite is preferable because it doesnt absorb much water from the descriptions of different sub-base types. Crushed Miscellaneous Base. When autocomplete results are available use up and down arrows to review and enter to select. Unfortunately, it can be hard to smooth out, and its non-porous, so it can struggle with drainage. For a 100-square-foot area, youll need around: You may have trouble managing the sheer weight and volume on your own, but you can hire a local stone and gravel company to deliver it to your yard. Again, based on the quantity of sub-base you need, you can buy it in ton bags or loose loads. For commercial or public use, such as artificial grass at schools, playgrounds, offices and shops or an area with a very high volume of footfall we recommend installing a sub-base of between 70mm to 100mm. Copyright Astro Warehouse Ltd. All rights reserved. This is the last layer of aggregate material installed directly under the artificial lawn and on top of the sub-base. The sub-base of your Astroturf is the layer placed directly on top of the soil. From practical experience, an ideal sub-base for artificial grass is the 20mm stone chippings. Moreover, no fake grass installation company would engage in unprofessional service. The artificial turf itself is usually about 1 inch (2.5 cm) thick. Pull up or cap any sprinkler heads. If you are installing the synthetic lawn over a hard surface instead of over soil, the surface needs to be completely waterproof and damage-resistant. Infill for artificial grass is also made of crushed rock. Though it comes at a higher cost, Decomposed Granite (DG) is the best sub-base for artificial grass. 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