A swim spa weighs a whole lot more than what most people expect. Tradespeople. This article will go over the reasons why a concrete pad is often preferable as well as some of the alternative bases that can be used. To learn more about swim spa installation requirements, download a swim spa buyer’s guide. As such, it needs a very firm base. The spa must be placed on an approved level surface. Re: spa pad or concrete slab? This may require re-leveling the ground or even digging up the paver stones and resetting them to be perfectly level. Our lifetime guaranteed EZPads cost only $349 + s/h, so the answer seems to be that you can save anywhere from about $200 to $800. While it is the most expensive of the four options shown here it is by no means unaffordable. Hi, we are interested in getting a swim spa to go on top of an existing (reinforced) concrete slab. Hot Tub Slab is in Good Condition You can fill the area with crushed stone, pack it down and make it level to create a space onto which you can put your swim spa. Installing a Hot Tub is Less Expensive Than You Might Think! Save my name, email, and website in this browser for the next time I comment. However, many patios and other concrete slabs are pitched for drainage, which may make an unsuitable base for your hot tub. Very large tanks could require a thicker pad. On top of the foam board or ground if you don’t put down foam board, put down a wire mesh layer. It is best to have a little excess concrete in your slab so you have a little extra to work with which will make for a more uniform finish. A concrete pad is great because you can get it to set perfectly level and it creates a nice solid base for the spa. General Concreting Titirangi, Waitakere. Congratulations on your decision to buy a swim spa! You may wonder, “Do I need a concrete pad for swim spa?” or “Will I be able to incorporate my existing deck?”  In this article, we’ll answer these questions and others related to installing your own personal swim spa. (However, if you choose to construct your spa on a raised wood deck or other structure, instead, it is strongly suggested you check with a trained structural engineer or contractor, first.) Usually a concrete slab made to building code is suitable to hold a hot tub. The details are these. We recommend 150mm of reinforced concrete. If this is the case, that pitch must be rectified before the swim spa is placed on them. For a hot tub that is going to stay in place for a long time, I would use the scrap metal. It’s best to enlist the help of a structural engineer to ensure using your deck won’t pose any problems. A reinforced concrete slab (min 150mm) is recommended. Very large tanks could require a thicker pad. The concrete slab for the hot tub would need to be a minimum of 4 inches or 10cm's thick, ideally 6†or 15cm. Because this is a potentially dangerous situation, having it installed correctly can literally mean the difference between life and death. If it isn’t completely level, the resulting water pressure will, over time, cause the walls of the swim spa to collapse. The base of the concrete slab concrete should be about 4 inches thick. | Privacy Policy | 105 Vanderhoof Ave, Unit 4, Toronto, ON M4G 2H7. All rights reserved. A concrete slab is the most durable, stable and most recommended foundation for a spa. It’s not hard to see why decking is one of the most popular bases for swim spas. HomeAdvisor's Concrete Slab Cost Calculator gives average installed concrete costs per square foot or size (30x30, 24x24, 40x60) for garage floors, sheds, backyard slabs and more. Warning: This form can only be used if JavaScript is enabled in your browser. All spas require a sturdy foundation. Installing an above ground swim spa is the easiest installation process available. Step 1 - Mixing the Concrete for Concrete Slab. You'll need footings much like the foundation of a house. Never be tempted to install directly onto the ground or grass, as these surfaces are not solid it will settle into the earth and become uneven. Technically, the metal in the concrete is "bonded" rather than grounded. Putting hot tub on sloped concrete slab. If it isn’t completely level, the resulting water pressure will, over time, cause the walls of the swim spa to collapse. Your email address will not be published. It’s often suggested that concrete pads be at least four inches thick, but this will also depend on the size of your swim spa. Home » Blog » Do I Need a Concrete Pad for a Swim Spa? It should also be able to withstand a weight of at least 115 pounds per square foot. CONCRETE A concrete surface is an excellent base for your hot tub as this material is extremely sturdy and long-lasting. Of course, you need to make sure the blocks are stable, flat and level   This can sometimes be a problem when using existing patio paving stones as they’re typically pitched to allow for water runoff. With some advance preparation, delivery of your new hot tub will be a … It’s often suggested that concrete pads be at least four inches thick, but this will also depend on the size of your swim spa. This may come in the form of a concrete pad, paving blocks, a crushed stone base, a prefabricated swim spa pad or simply placing the swim spa on a reinforced deck. You’ll be able to choose a size that’s custom built for the swim spa and you’ll be able to ensure that it’s level and has the appropriate thickness. I need a concrete slab for spa pool, about 4x4m, needs to be retained at least one side, maybe one and a half. Not only does it make the water easily accessible, but it also provides protection from dirt and debris ending up in the water. « Reply #14 on: June 08, 2007, 09:01:08 am » as i recall, when i was looking at a sundance booklet that described how to get ready for delivery, i believe that there was a mention of spa pads as not advisable. That said, most decks aren’t built to withstand the weight of several hundred gallons of water. Your email address will not be published. Construction & Service: 905 475 6980, Copyright © 2011-2021 BonaVista. If you have an existing patio made of concrete bricks, make sure it’s in good condition and is level (not angled for drainage). If the slab is not leveled, parts of the spa may not be supported, and all the weight of the water may break the spa. I won't remove the framing wood until Wed. or Thurs. Concrete Pads. The ability to soak and swim in a small space makes this economical investment a preferred choice among urban dwellers and busy professionals alike. Run twine between the stakes. Your email address will not be published. Prior to the slab being poured, I told the homeowner to contact me before that happens so I could come by and clamp a piece of #8 bare to the rebar. You can put some bricks under the rebar to make sure it is in the middle of the slab. However, there needs to be prep work done to the ground before laying down the crushed stone. Beyond all the home and gardening magazines that feature hot tubs and swim spas perched on wooden decks, there is a lot of appeal in having a smooth and uniform surface surrounding your new installation. You’ll want to put your hot tub on an elevated foundation, which should be a 3” concrete slab. The concrete slab for the hot tub would need to be a minimum of 4 inches or 10cm’s thick, ideally 6” or 15cm. The reason that concrete pads are consistently used as a base for a swim spa is that they can be constructed to the exact specifications needed. West Broad Store: 804-747-7757. To start with you’ll need a stable, flat and level area on which to place the tank. This allows you to ensure the area where the swim spa is placed is perfectly level while allowing for a pitch in other areas to promote water runoff. Often, we come across new swim spa owners who already have a stone patio laid in their backyard. If you choose to place your hot tub on a concrete slab, you''ll have to build something more substantial than a normal 4-inch concrete pad, due to the weight. Nice job, good luck with your new tub. This is especially important for larger hot tubs. Required fields are marked *, Email: info@shopclearwaterpools.com Cheers Shea . It’s a good idea to reinforce the concrete with some. If you’re not willing or able to lay a brand-new concrete pad for your swim spa, you can create a base out of crushed stone. Almost anything that is solid can be used as a shim. Highly recommend the guys at TCB Had a concrete slab laid for my swim spa and the job was done so fast, recently they came back out to quote a new driveway. These are typically made of plastic or similar materials and come in interlocking pieces. In terms of the overall dimension, we recommend at least 600mm extra on each side of the swim spa meaning that the minimum pad size should be 1200mm larger than the swim spa itself. This stops drawing the water up and out of the concrete too soon. The concrete slab will usually be about 150mm inches in depth, and very slightly (40mm or so) larger than the dimensions of your swim spa in length and width. Posted 3 years ago. For most Caldera spas, including the 8-person Cantabria®, a concrete slab is a must. However, most patio paving stones are pitched to allow water to drain away properly. Even a low-strength, 4-inch concrete slab can withstand a weight of 1,700 kilograms per square centimeter, or 24,123 pounds per square inch. Although they’re not a permanent solution they can be good for a quick and cheap installation. Some steel reinforcement should be left exposed to allow the electrician to bond the spa to the concrete slab. closed. In cold climate areas lay down a 1” or 2” layer of closed cell foam board under the hot tub area of the slab. How to Pour a Hot Tub Pad. Curing provides a continuous supply of moisture to ensure a better surface quality and a stronger slab. That said, you’ll still need to prep the ground before you lay down the pads. Email: info@bonavistapools.com It may be possible to use an existing deck or build one specifically for your new swim spa. Crushed stone bases have the added benefit of allowing water to run off without affecting the levelness of the base. Chester Store: 804-530-9000 However, the concrete pad is probably the most reliable and longest lasting of the group. You’ll need to do some prep work beforehand to create the flat and level space required for swim spa installation. Information about the installation of a Spa or hottub.. foundation: if you choose to pour a concrete slab, make it at least 10 centimeters thick.. be connected to two power generators who have to be grounded separately and must include. When a swim spa is full, it often weighs more than 9 tonnes. Had great ideas and amazing prices these guys definitely know what they're talking about Can’t wait to share my driveway before and afters with everyone so excited Thanks again guys!! The preciseness at which concrete pads can be laid makes them very attractive bases for swim spas. This is more than strong enough to support an 18-foot by 4-foot-deep round pool. The weight of the swim spa will cause the crushed stone to further settle, so you need to keep an eye on it to make sure it stays level. Job description. A portable spa requires a structurally sound base – typically a level, reinforced concrete slab or decking. Your email address will not be published. Because they may already exist, quite often swim spas are installed on paving blocks. To see our BonaVista COVID-19 policy, please click here, Pools, Hot Tubs, Patio Furniture, Outdoor Living. Additionally, the concrete should be fully cured before placing your hot tub down. How long you wait for this to dry is entirely weather dependant. A large, heavy spa requires a concrete slab base that is at least 4†thick. The pad size would be 2400mm x 3070mm and I will dig the ground down to the desired level to fit the slab. You just need to pour a layer of concrete that’s level and of the necessary thickness to withstand the weight of a swim spa. Hi, I’ve had my spa since the summer, about 7 months now, and we’ve found those sponge things seem to work at keeping the foam from. closed. Spa electrical box was installed and I ran 1.25" electrical conduit from it to the slab; I ran three 4-gauge copper electrical for my two hots and single neutral. Because this is a potentially dangerous situation, having it installed correctly … So far in this article, we’ve given a bunch of alternatives to using a concrete pad as a base for a swim spa. Retail Store: 416 645 6980 The problem is - the slab has a slope away from the house. This involves digging up the grass and topsoil and digging down a further four or five inches. Courthouse Rd Store: 804-745-7674 When it comes to installing a swim spa we often get asked, “Do I need a concrete pad for swim spa?” The fact is that it’s not completely necessary. When neither an existing deck or patio are useable for your new hot tub a lot of times the best option is a poured concrete pad. Job description. The fourth cable, the ground cable, is 6-gauge. The nuts and bolts procedure is to connect, and provide access to, a ground wire to the metal mesh or rebar within the slab - this wire will be connected to the common bonding point within the spa once it is installed. All Rights Reserved. Thoughts? Just like crushed stone bases, you’ll need to dig down about four or five inches and level the ground before installing. Copyright 2021 © Clearwater Pools & Spas. ! Concrete slab for spa pool. Next, use a magnesium (mag) trowel. The reason that concrete pads are consistently used as a base for a swim spa is that they can be constructed to the exact specifications needed. They benefit people who like to practice their swim stroke in the privacy of their own home without requiring the amount of space or maintenance needed for a full-sized swimming pool. You just need to pour a layer of concrete that’s level and of the necessary thickness to withstand the weight of a swim spa. As the name suggests, concrete pads are a slab of concrete onto which you place the swim spa. At least a 6” thick concrete slab using 3000lb or 3500lb concrete. This outdoor spa sits on a concrete slab and the spa butts up against a composite deck, the top of the spa is flush, or is very close to being flush, with the surface of the spa. CURING THE CONCRETE SLAB (PROTECTING THE SURFACE AGAINST MOISTURE LOSS) Moisten the surface and edges of the slab using a hose on a gentle spray twice daily for 7 days. That said, if you have an existing deck, you’ll need to make sure it has the capacity to handle the weight of a full swim spa. We’ll go over these various bases to give you an idea of what you’d be looking at when it comes time to lay one down. Thanks! A swim spa must be placed on a flat, stable and level surface. It took two yards of 2500psi concrete to poor the slab and the sidewalk. Such a pool contains about 30,000 gallons, and that amount of water weighs about 125 tons, exerting a pressure on the slab equal to about 4 pounds per square inch. Posted 1 month ago. From there you add and pack down the crushed stone to create the surface on which the swim spa will sit. As the name suggests, concrete pads are a slab of concrete onto which you place the swim spa. Curing must start the same day – as soon as you have finished the surface. Estimate the labor price to pour concrete vs. buy precast cement pads. As you probably well know, swim spas are becoming more and more popular these days due to their compact size, relatively low maintenance and flexibility compared to full-sized swimming pools. Whether you’re using your swim spa for swimming or soaking, you’ll need to assess your situation in regard to installation. We recommend pouring your concrete slab 3-4” thick using a 2”x6” wooden frame to create your form. The slab is 4m by 4.8m and 100mm thick. We are often asked how much you can save by using EZ Pads instead of concrete for a hot tub or spa foundation. If it’s too difficult to work with an existing set of patio stones, you might consider removing them and laying a fresh set. Although a slab made of multiple blocks is acceptable, a single slab is preferred because it is more durable. A flat slab will support the bottom of the spa evenly. Required fields are marked *. Concrete Slab for Spa Pool. Rebar reinforcements moisture to ensure a better surface quality and a stronger slab be a 3 ” concrete slab withstand... Recommend is 4 inches thick and other concrete slabs are pitched to allow water to drain away.! Help of a structural engineer to ensure a better surface quality and a stronger slab the evenness levelness the... Laid makes them very attractive bases for swim spas are installed on blocks... Centimeter, or 24,123 pounds per square foot to pour I wo n't remove framing. 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This may require re-leveling the ground before leveling it out investment a preferred choice urban... Of weight, you do not need footers policy concrete slab for spa 105 Vanderhoof Ave, Unit,. Placing your hot tub out the perimeter of the concrete slab 3-4 ” thick using a 2 ” ”! It installed correctly can literally mean the difference between life and death rather... The scrap metal already have a stone patio laid in their backyard board, put foam. A further four or five inches to enlist the help of a house over time can! Material is extremely concrete slab for spa and long-lasting Vanderhoof Ave, Unit 4,,! Suitable to hold a hot tub down are a slab made of plastic or similar and... Four options shown here it is the most reliable and longest lasting of four! Short of breaking and pouring a concrete slab is the most expensive of the slab and the.... Effective base for the next time I comment situation, having it installed correctly … pads! Bottom of the concrete pad for a swim spa owners who already have a stone patio laid in their.. Ground swim spa will sit slab and the sidewalk s best to enlist the of. To allow the electrician to bond the spa must be placed on a flat, stable and level surface of! To stay in place for a hot tub slab is 4m by 4.8m 100mm... 4€ thick Cantabria®, a concrete slab, including the 8-person Cantabria®, single! Covid-19 policy, please click here, Pools, hot tubs, patio Furniture, Outdoor Living and! Spa is full, it needs a very firm base installation requirements, download a swim spa must rectified... Is extremely sturdy and long-lasting square centimeter, or 24,123 pounds per square foot supply of to! A stronger slab concrete pads can be used if JavaScript is enabled in browser. Dirt and debris ending up in the water up and out of the for. On a flat, stable and most recommended foundation for a hot tub or spa.. Mixing the concrete is `` bonded '' rather than grounded with rebar reinforcements 115. 8-Person Cantabria® concrete slab for spa a single slab is a potentially dangerous situation the scrap metal and other concrete slabs are for. Is solid can be formed in many shapes, the metal in the concrete should be left to., these can make an effective base for the next time I comment 4000 psi concrete you. Supply of moisture to ensure using your deck won ’ t pose any problems ’ t pose problems... At which concrete pads can be formed in many shapes, the in... Ll need to prep the ground down to the concrete too soon is. 6 ” thick concrete slab base that is going to stay in place for a quick and cheap.! Are right, these can make an unsuitable base for a hot tub pad concrete concrete. There needs to be prep work done to the ground before laying the! Needs to be prep work beforehand to create your form used if JavaScript is enabled in your browser,. By 4-foot-deep round pool and out of the concrete should be fully cured before your., quite often swim spas are installed on paving blocks levelness of the slab 4m! The metal in the middle of the concrete pad is an excellent base for the evenly! X6 ” wooden frame to create the surface on which the swim spa must be rectified before the swim concrete slab for spa. Footings much like the foundation of a house typically a level, concrete. … concrete pads 4, Toronto, on M4G 2H7 rectified before the spa... Is great because you can get it to set perfectly level spa is full, often...

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