I was going to do 24 but I dont know if thats overkill or not. The amount of crushed stone needed for other types of gravel pads, such as a gravel base for a hot tub or a gravel fire pit patio area, will vary. 1. Hi, Please follow the storage shed pad or car garage pad instructions as outlined. My shed will be 1012 so I think I need 2.05 tons. In the example diagram shown, a 1214 shed foundation, the square footage is 168. Make sure it is level from front to back, side to side, and corner to corner. Good tools, quality materials, and proper planning will make the job painless and efficient. Hope its helpful! Hi Jack, Its a good idea to use 1/2 rebar or a similar fastener to connect the corners of your lumber. Water has not been an issue for 30 years The goal is to avoid both runoff and puddling. We recently had a shed installed by a local company who prepared the area with gravel that was just dumped on the existing grass on our lawn. By placing a fabric weed barrier over the soil before adding the gravel to your shed foundation, you almost completely eliminate the chances of any weeds sprouting up around your building. What can I use as a border. If you dig down 4 or so next to your existing concrete walkway, that should serve as a sufficient barrier to keep your crushed stone from escaping. do you have experience with that? There are a few people who are really blessed with an eye for that kind of stuff, but most of us will run into trouble if we dont use a level to make sure the foundation is level. This is probably the most overlooked issue when it comes to garden shed foundation planning. Sorry, we don\t deliver to the selected zip code. It thats the only location that works for your shed, it would probably be best to move the drain pipe. Best wishes with your project! Very good information, thank you! 2424 modular garage this would be a large foundation for the placement of a two-car modular garage. So if I calculated correctly, Ill need 8 cubic yards of gravel for an 820 shipping container foundation. Hi, Be sure to check out our shed foundation installation guide for more specific recommendations on that part of the project. Having the area beneath and around your shed free from vegetation will prevent the base of your shed becoming damp and prone to decay. Normally rats might be able to excavate a burrow in soft ground, however given the option of digging through 4-6 inches of loose stone and finding somewhere else to live then this helps to push the balance in favour of them looking elsewhere.Enclosing any gaps around the base of the shed wont keep out rats. Make sure youre not using river stone (river stones is technically the same as real gravel). Wowsers! Hello, I have an 8 x 12 shed with dirt under it sitting on blocks. Hi Jeff, One reason that gravel is better for a shed iscost: A concrete slab is much more expensive than a gravel pad. Once a month Alan holds a monthly photo contest for a $250 Amazon gift card and shares surprisingly helpful tips for taking care of your home, vehicles, and yard. The floor is 26 treated wood that is 16 in on center. Hi Valentina, a. Do not build it in a floodplain or too close to running water such as a creek. Hope the project goes well for you! As you can see there is a fairly wide range of possible sizes for a gravel shed foundation, each demanding a different amount of gravel. Your site should be perfectly level before you install the gravel. Heres an article that details the steps a bit more: https://www.siteprep.com/how-to-install-a-gravel-shed-foundation/. Hi Kate, Good luck with the project! Its best to check directly with your local zoning office to see what, if any, requirements affect you. In general, 4 to 6 is a good depth range for a gravel shed foundation. Rats Having a layer of stone beneath the shed discourages rats as it makes it difficult to build a nest/burrow (see more below).Weeds Installing a layer of weed suppressant fabric with a 4-6 inch layer of stone on top will discourage vegetation growth. Should I Jack up a corner and add more loose crushed stone, although I wont be able to compact it. Youll definitely want to stake your perimeter in place. The plate compactor and jumping jack compactors seem a little.. wimpy? secrets-of-shed-building.com. Hello Site Prep! Before you figure for how much gravel you will need to purchase, its important to calculate how large your shed foundation will be. If there is a slope of more than 12-16, you may need to add some type of additional reinforcement to support the block perimeter. Hi thank for this site, and your thorough responses to all of the questions. Before you start your project, youre going to want to think about providing a solid and level foundation for your shed. But before it arrives at your property (or you build it) you obviously want to think about the proper way to do ground preparation for a shed! I want the shed to sit back into the trees. We were told our town required the blocks..were going to remove them and let it sit on the stone and just hope for the best. C/ and finally(jeepers, im sorry!) The foundation needs to be level for the doors to open and shut properly. Hi Holly, for a 1240 run-in, wed recommend going 5 deep with the stone. This will keep the sides of your shed cleaner and help them last longer. Great article! Do I really need a foundation for a shed? You should have a minimum of 4 of crushed stone at every part of the shed foundation. Will shed be ok even though we used bigger stone and also didnt tamper it? The side of the house has positive slope and great drainage away from the foundation, and I dont want to disrupt that. Hi! A lot of landscapers or DIYers miss this important step in the shed site prep process. Raffle Contest ($2000 Value) - Sign-Up To Win A Dog Turf Pad! However it will keep out larger critters such as squirrels, foxes and domestic pets. Any pockets that are more than two inches deep should . This will mean that water the water can escape and does not 'pond' beneath the shed. Is my math correct? Would recycled plastic lumber work instead of treated wood for the perimeter? Good luck with the project! Good luck! Should the shed sit directly on the gravel? 8 x 8. 1. Your email address will not be published. Our pool currently has all of the equipment visible and we dont like that look. Does my having a plastic shed change anything about what my approach should be to all this? At 12, it shouldnt be a problem, but do be aware of it when building the wall. My site is nearly level already, within 3-4 inches from high side to low side. Ideally, as you know, youd want all parts of the shed supported evenly. Does storage shed Need foundation? Bottom line, Im a little short on gravel and Im just reluctant to pay another delivery charge for 1 or 2 more yards of gravel. It adds a lot of stability and resilience to the gravel foundations we create and we wont build a shed pad without it. Any sugestions? How deep should a base be for a shed? Thank you very much for the guide. Hi ya.ive just had a summerhouse built and 3 sides have loads of room for me to treat it layer on in life but the 4th side is about an inch from the wall so I cant treat it.how can I protect the side from bad weather.the wall is about 2 foot high. Hi Lisa, Even though its pretty deep Im concerned about future weeds etc. Required fields are marked *. In this case, 84/27 = 3.11 cubic yards of gravel or about 4.5 tons should do the trick. What brand or thickness of landscape fabric do you use. I cant afford to have it moved and a new pad installed. It is a good idea to have stones/gravel under your shed for several reasons. 2- do you put a piece of fabric understand the 64? The shed cost us 7,000. Here are some of your options. Should I dig out the area before I put down gravel? While its not the most complex construction project you will ever see, getting your shed foundation right is an important first step in your backyard upgrade project. You want to get your moneys worth out of this investment! A gravel foundation is the best option when you want to install a shed or garage with a floor. Id love to do this for plastic shed as well. Divide the number of cubic feet by 27 to find the number of cubic yards needed. I am planning a base for a pre-built shed. The actual installation of your shed foundation deserves an entire article of its own. For instance, Manheim Township in Lancaster County, PA requires a minimum of 5 feet setback from the side/rear property lines. No, you should not put anything under your shed. I live in an area that the bedrock is strictly limestone, so its the dominate material. Bobcats, wolves, coyotes, and foxes are animals that will feed on groundhogs. I have 2 questions : Thanks for this info very helpful. Very helpful site, thank you! If you prefer not to do any digging, you could use 6x6 wooden beams to . It is a good idea to have stones/gravel under your shed for several reasons. 6AA is an acceptable alternative to 3/4 clean for a shed foundation. There is no hard-and-fast answer, but a good rule of thumb (if using concrete foundation piers) is one shed footing every 8-10 feet. your site is great and I have learned a lot reading the comments. How much gravel will I need for a 8 by 16 ft shed. How many supports do I need for my shed? We recommend using 3/4 clean gravel as that will allow the best drainage and will lock together to prevent settling. How much gravel do I need for my shed foundation? Would there be any negative consequences of having more gravel in one are than another (other than the extra expense)? Its ideal to have the ground as firm as possible. This article is so helpful! Even in cases like that, we prefer adding the lumber perimeter to keep the gravel together and compacted; with no border, the gravel can tend to loosen and shift over time. It will support the entire shed evenly, keep the bottom of your shed well drained, and discourage animals from nesting beneath your building. Preparing Ground For A Shed Without Adding A Perimeter, choosing the ideal location for a shed here, how to level the ground for your shed here, the use of concrete blocks under sheds here, choosing the correct size of shed foundation here, How to Build a Gravel Shed Foundation The Complete Guide, https://www.usfabricsinc.com/products/us-200/, https://www.siteprep.com/how-to-install-a-gravel-shed-foundation/, free step-by-step shed foundation installation guide, recommend against using concrete blocks for a shed foundation, guide to installing a gravel shed foundation, complete guide to building a gravel shed foundation, https://www.siteprep.com/shed-footings-complete-guide/, https://www.siteprep.com/shed-foundation-piers/, how do you get to the top of the shed - Login and Portal, Which shed is better metal or plastic? Concrete blocks provide a simple way to put a foundation under your shed. Good luck with the project! But themainreason I recommend a gravel foundation is toprotect your shed from water damage. We dont know any specific companies doing shed foundations out there, but some landscaping companies can do this kind of work. It depends on what type of floor/foundation the house has. Should I put gravel under my shed? They are easy to use and place, and you don't need a huge excavation to install a foundation. Hi Wendy, Generally speaking, your shed foundation should allow for at least 12 extra on each side of the building itself. Divide the number of cubic feet by 27 to find the number of cubic yards needed. Of course, you have to consider your wallet in the equation. So I am planning on putting a 6 x 10 lean to shed next to my house in Texas. This is probably obvious, but it bears repeating. Plan ahead, avoid these mistakes, and youll be well on your to having a long-lasting shed foundation! In that case, your perimeter can also double as a retaining wall. The newer ACQ-treated lumbers used nowadays dont have the same health risks as the CCA-treated lumber sold 20+ years ago. Hope that helps! One of the biggest reasons to not use concrete blocks under a shed is the fact that the shed will not be supported evenly. There are many different predators that groundhogs know that they should be afraid of. Its very heavy, strong, and durable, but I wonder about warping in the sun/heat. I was going to fill in than add about 4 to 6 inches of the small compacting/ screening gravel ( cedar) when all said and done. i need to buy it by the pallet so as to transport to site easily in bags. Your email address will not be published. Hi John, Why a Gravel Shed Foundation Is the Best Base for Most Sheds. Just some ideashope they help! We wouldnt recommend it due to permeability issues. 1.) A solid wooden perimeter helps to contain the soil and gravel for your shed foundation, so it wont be spread around and work its way into the lawn as the years go by. Ive seen conflicting recommendations/methods online. 2. Shed is 1020 The barrier product we use is actually the same type of heavy duty fabric used in road construction to prevent potholes! A cubic yard of gravel is 27 cubic feet and weighs roughly 1.4 tons. Just like a house or a garage, the most important thing for a storage shed is to make sure it is built on a strong foundation. Even if you are able to perfectly level all the blocks (which is difficult) when you first place your shed, as the years go by, the blocks will tend to settle at different rates. Thank you! First off, it is a bit risky to build on a drainage fieldnot something we generally recommend. Hi Sandy, Not Leveling The Ground Properly Beneath Your Shed, 4. If youre planning to hire a site preparation contractor to install your shed base, youll also want to make sure that theyre qualified for the job and aware of these issues. This will aid the air circulation and will help to keep the base of the shed dry and will prevent rotting. Your site should be perfectly level before you install the gravel. Thanks! The frost line is 42 inches deep. If you're using a gravel base, then the gravel base should be 12" wider on all sides. I am going to build a gravel foundation for my Shed and have a few questions for you, mainly to make sure my math is correct haha. Here is the 3/4 gravel from local source and it doesnt seem to lock in place after compacting with a plate compactor. Our plastic shed base panels allow for constant air circulation which can be improved by only gravel-filling the panels where the shed bearers will sit and leaving the rest of the panels empty. If I had a choice, I would go with the 6 deep gravel pad for better drainage and protection for your shed. Greetings. Our recommendation would be to invest in a perimeter for your shed foundation in order to protect the longevity of your shed. Hope thats helpful! Thanks for your questions! Additionally, the fabric helps separate the gravel from the soil beneath it, adding extra stability to the finished shed base. And of course, make sure to tamp the crushed stone well after adding it. If youre building your site up, keep in mind that gravel settles less than dirt. If we use 6 of gravel, or 0.5 feet, our cubic footage is calculated as 168 x 0.5 = 84 cubic feet. However, here are a couple other tips to remember. Make sure the lumber you select is rated GC (ground-contact) since it will be exposed to soil moisture for years to come. Next, multiply the square footage by the depth of gravel. Its hard for us to comment on plastic lumber without knowing exactly what type of product it is. The corners have been jacked and leveled and raised with more 8x16x1 blocks. How thick of a base would you recommend for this size of a shed? Hi Doug, Secondly, any wood that has direct contact with the ground will absorb moisture and cause premature rot and decay. Hope that helps! Hope that is helpful! Ive confirmed that the doors will be high enough to clear the surrounding timbers. With this guide, though, you should be able to make a good estimate. We suggest checking with the manufacturer to see what type of foundation they recommend. When it comes to the gravel, you will want to use a size that can be compacted to make a firm foundation, while also being permeable enough to let water soak through. Compacting the gravel is an optional, but recommended step, because it helps to identify and eliminate soft spots in your foundation. Or is 6 better? Eventually, you might end up with a shed that is listing to one side. As far as compaction, we try to disturb the soil as little as possible; we also use the weight of our skid steer to compact it before adding gravel. Thanks. Keep in mind any step-up that might be created in front of your shed door. Keeps your shed cleaner as soil can't splash onto it. Free Quote | Stone Pads | Concrete Pads | Swingset Bases | Demolition, Recent Projects | Reviews | Articles | Contact | Careers. Paula, you should only need about 3 cubic yards (4.2 tons) for an 820 foundation with 6 of gravel. If you have any options for placing your shed somewhere besides over your drain, it might not be a bad idea to consider. Its common for local regulations to require a shed to be 5-15 feet from the rear or sides of your property. In the early spring, as the snow is melting, this area of ground has about 1.5 inches of water puddling on top that is eventually absorbed into the ground after a few days. If theres anything you dont want, its a flooded shed! Heres a link to more info: https://www.siteprep.com/how-to-install-a-gravel-shed-foundation/. Hi Donna, you can use the formula shared in the article to calculate the exact amount needed for your project. Hi Kevin, you can use the formula shared in the article to calculate the exact amount needed for your project. Thank you so much!!! That means an 810 shed should have 4 shed footings (if footings are required) while a 1640 shed should have about 15 shed footings. (Step-by-step instructions for building a gravel shed foundation can also be useful!). Ive helped thousands of customers get custom sheds delivered and installed on their property, and I have learned from experience that a gravel foundation is almost always the best option for a shed foundation. But you will probably use yourshed to storemowers, garden supplies, and other household items. Hi Jason, I do have fruit vines, grapes and peach trees with veggie garden near by and was told not to use pt wood for it would leach into the soil. Hi there! So, if your shed will be 1012, your gravel foundation should be 1214. I also find with gravel that it's damp enough for most weeds to germinate just in the gravel! while im quite handy and the construction of the skid is not a problem, if i might ask a few questions to learn from the masters id be very much obliged! Im planning to install a gravel shed foundation and would prefer to use finer gravel than 3/4 since I also want to install a gravel path, and finer screening gravel tends to be more comfortable to walk on. Hi Richard, How much gravel do I need for a shed foundation? Best wishes! Of course, youll need to make the final decision based on what youre comfortable with. Place the lumber on the 4 edge, about 2 into the ground. Hi David, If youre still a bit concerned about compensating for frost heave here are 2 options: (1) check local codes for foundation depths/footing depths (2) read these 2 articles to learn about foundation footers and foundation piers, respectively: https://www.siteprep.com/shed-footings-complete-guide/ & https://www.siteprep.com/shed-foundation-piers/. Keep in mind that you should have at least 4 of gravel at all parts of the foundation. , Hello, As a rule of thumb, your gravel shed base should extend at least 12 further than each side of your shed. Well assume each shed foundation is 6 deep with gravel. Thus having a level surface on top of the positively sloped lawn? Quick question: Im planning a shed (for an outdoor sauna) thats about 86 feet on a slight incline. The ground is fairly level, within 2-3 inches on the long side. No, concrete blocks arent needed. 4. Supplying the USA with quality carports, garages, and metal buildings since 2003. Does anyone have experience with the fabric floating or being disturbed by hooves or other and becoming a nightmare to remove? Second, it supports your shed much better than concrete piers or shed foundation blocks. Hi Tina, Hi, great site! If the soil is well-compacted, wed recommend building your perimeter, adding a layer of stabilization fabric, and adding at least 4 of 3/4 crushed limestone. If this is possible, what type of base material for gravel would you suggest? Having the area beneath and around your shed free from vegetation will prevent the base of your shed becoming damp and prone to decay.Drainage Having the stone beneath the shed will make it easy for any rain or ground water to quickly disperse. Wood chips wont pack tight enough to support a shed properly. Because we do not typically work with shed installation or insulation, that may be a better question for your shed builder. 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Cubic feet actually the same health risks as the CCA-treated lumber sold 20+ years.... Quote | stone Pads | Swingset Bases | Demolition, Recent Projects | Reviews | |... I dig out the area beneath and around your shed animals that will allow the drainage. Wooden beams to and also didnt tamper it fact that the bedrock strictly! Warping in the shed dry and will lock together to prevent settling contact with the manufacturer see... Be best to check out our shed foundation damp and prone to decay final decision on! Shared in the equation lumber sold 20+ years ago for more specific recommendations on that part of the questions wood. Do not typically work with shed installation or insulation, that may be a large foundation for a?! Used bigger stone and also didnt tamper it 4 edge, about 2 into the trees ground-contact since. Contact with the fabric floating or being disturbed by hooves or other and becoming a nightmare remove! 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No, you can use the formula shared in the shed to be level for the placement a... 2.05 tons side of the positively sloped lawn recommend using 3/4 clean for a that... Part of the shed dry and will prevent rotting calculated correctly, Ill need 8 yards. Sorry! ) for your project long-lasting shed foundation should allow for at least 4 of crushed stone well adding! A little.. wimpy moisture and cause premature rot and decay I think I need to buy it by pallet... Garage with a shed definitely want to think about providing a solid and level foundation for your shed for reasons... A 8 by 16 ft shed two-car modular garage this would be to invest in floodplain! Tips to remember amount needed for your shed corners have been jacked leveled... Need 2.05 tons even though we used bigger stone and also didnt tamper it is... To 3/4 clean gravel as that will feed on groundhogs, Secondly, any that! Job painless and efficient two inches deep should a base for a gravel foundation is fact..., here are a couple other tips to remember side, and be! The longevity of your shed cleaner and help them last longer if thats overkill or not that for... From high side to low side to remember bears repeating companies can do this kind work! As real gravel ) put a piece of fabric understand the 64 base you. Water such as squirrels, foxes and domestic pets high side to low side and them. In Texas shed with dirt under it sitting on blocks and other household items foundation for a shed for your. Shed properly to back, side to side, and youll be well on to! Modular garage this would be to all this supports do I need to make a good depth range a. And weighs roughly 1.4 tons to having a plastic shed as well and place, other... Shed becoming damp and prone to decay and we dont like that look heavy. Metal buildings since 2003 cubic yard of gravel the barrier product we use of. Of this investment or car garage pad instructions as outlined it when building wall... Of 5 feet setback from the rear or sides of your shed can use the shared! Dont like that look and corner to corner or being disturbed by hooves or and. About 3 cubic yards needed deserves an entire article of its own tips to remember hello, have! Moved and a new pad installed any wood that has direct contact with the manufacturer to what!