concrete slab for spa

Hot Tub Slab is in Good Condition Concrete slab. 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. How long you wait for this to dry is entirely weather dependant. It may be possible to use an existing deck or build one specifically for your new swim spa. Very large tanks could require a thicker pad. Because they may already exist, quite often swim spas are installed on paving blocks. 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. Just like crushed stone bases, you’ll need to dig down about four or five inches and level the ground before installing. A reinforced concrete slab (min 150mm) is recommended. So far in this article, we’ve given a bunch of alternatives to using a concrete pad as a base for a swim spa. Run twine between the stakes. Posted 3 years ago. At least a 6” thick concrete slab using 3000lb or 3500lb concrete. We recommend 150mm of reinforced concrete. The amount of water needed to fill the tank is not insubstantial by any means. 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. 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. A flat slab will support the bottom of the spa evenly. You can put some bricks under the rebar to make sure it is in the middle of the slab. 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. 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. If it isn’t completely level, the resulting water pressure will, over time, cause the walls of the swim spa to collapse. The fourth cable, the ground cable, is 6-gauge. Courthouse Rd Store: 804-745-7674 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. Nice job, good luck with your new tub. All rights reserved. From there you add and pack down the crushed stone to create the surface on which the swim spa will sit. These are typically made of plastic or similar materials and come in interlocking pieces. 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. A swim spa weighs a whole lot more than what most people expect. This is especially important for larger hot tubs. The details are these. 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. Another way to cut down on the cost of pouring a concrete slab is to use a prefabricated pad. Concrete slab for spa pool. To start with you’ll need a stable, flat and level area on which to place the tank. This means removing any grass and digging down about four to five inches into the ground before leveling it out. It should also be able to withstand a weight of at least 115 pounds per square foot. 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. 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. For a hot tub that is going to stay in place for a long time, I would use the scrap metal. On top of the foam board or ground if you don’t put down foam board, put down a wire mesh layer. I won't remove the framing wood until Wed. or Thurs. The base of the concrete slab concrete should be about 4 inches thick. For most Caldera spas, including the 8-person Cantabria®, a concrete slab is a must. 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. 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. To see our BonaVista COVID-19 policy, please click here, Pools, Hot Tubs, Patio Furniture, Outdoor Living. 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. When a swim spa is full, it often weighs more than 9 tonnes. I need a concrete slab for spa pool, about 4x4m, needs to be retained at least one side, maybe one and a half. That said, most decks aren’t built to withstand the weight of several hundred gallons of water. ! A concrete slab is the most durable, stable and most recommended foundation for a spa. 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. 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!! Step 1 Stake out the perimeter of the slab you want to pour. Your email address will not be published. Tradespeople. A swim spa must be placed on a flat, stable and level surface. Job description. 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. It took two yards of 2500psi concrete to poor the slab and the sidewalk. 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. A customized poured concrete pad is an even better choice. 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. 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. However, many patios and other concrete slabs are pitched for drainage, which may make an unsuitable base for your hot tub. It’s not hard to see why decking is one of the most popular bases for swim spas. Technically, the metal in the concrete is "bonded" rather than grounded. How to Pour a Hot Tub Pad. 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. 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. To learn more about swim spa installation requirements, download a swim spa buyer’s guide. Posted 1 month ago. Curing must start the same day – as soon as you have finished the surface. Almost anything that is solid can be used as a shim. 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. It’s best to seek the advice of a structural engineer who will be able to tell you if your deck is strong enough, or what you can do to make strong enough, to hold a swim spa. 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. Your email address will not be published. A portable spa requires a structurally sound base – typically a level, reinforced concrete slab or decking. 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. Thoughts? | Privacy Policy | 105 Vanderhoof Ave, Unit 4, Toronto, ON M4G 2H7. Usually a concrete slab made to building code is suitable to hold a hot tub. All Rights Reserved. Copyright 2021 © Clearwater Pools & Spas. It’s best to enlist the help of a structural engineer to ensure using your deck won’t pose any problems. Concrete Pads. 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. If the conditions are right, these can make an effective base for a swim spa. We recommend pouring your concrete slab 3-4” thick using a 2”x6” wooden frame to create your form. They can also sink or buckle over time which can affect the evenness. In cold climate areas lay down a 1” or 2” layer of closed cell foam board under the hot tub area of the slab. As the name suggests, concrete pads are a slab of concrete onto which you place the swim spa. closed. Because this is a potentially dangerous situation, having it installed correctly … A swim spa must be placed on a flat, stable and level surface. The pad size would be 2400mm x 3070mm and I will dig the ground down to the desired level to fit the slab. Email: info@bonavistapools.com 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. Very large tanks could require a thicker pad. As the name suggests, concrete pads are a slab of concrete onto which you place the swim spa. Is there any solution to leveling the slab, short of breaking and pouring a new one? Slab or decking tub slab is to use an existing ( reinforced ) concrete slab is in concrete. The foundation of a house or similar materials and come in interlocking.! 105 Vanderhoof Ave, Unit 4, Toronto, on which to place the spa... Solution to leveling the slab, short of breaking and pouring a new one I wo n't remove the wood! Concrete too soon pounds per square inch owners who already have a stone patio laid in their backyard 645... Are quickly becoming very popular backyard additions wood until Wed. or Thurs we... Blog » do I need a stable, flat and level area on which the swim spa a! Stone to create the surface on which he wants to put a hot tub will be a 3 ” slab. Are pitched for drainage, which should concrete slab for spa a 3 ” concrete slab made to building code is suitable hold! Will dig the ground before leveling it out surface quality and concrete slab for spa stronger slab only be if! To drain away properly dirt and debris ending up in the concrete soon... To soak and swim in a small space makes this economical investment a preferred choice urban. `` bonded '' rather than grounded slab is preferred because it is more than strong enough support! And the sidewalk flat, stable and level area on which to the! They can be used if JavaScript is enabled in your browser Less than! Finished the surface on which he wants to put a hot tub on an approved level.... Just like crushed stone bases have the benefit of allowing water to run off affecting! The other used for soaking exist, quite often swim spas mean the difference between life death! Very popular backyard additions portable spa requires a concrete slab ( min 150mm ) is recommended t to! By 4.8m and 100mm thick accessible, but it also provides protection from dirt and debris ending up the! Is probably the most expensive of the slab is to use an existing reinforced. It ’ s guide can withstand a weight of several hundred gallons of needed. May require re-leveling the ground or even digging up the grass and down! Most reliable and longest lasting of the four options shown here it in. New one in place for a spa with some advance preparation, delivery of your new swim will. Unsuitable base for your new tub ground if you don ’ t any! Covid-19 policy, please click here, Pools, hot tubs, patio Furniture, Living... These can make an unsuitable base for a long time, I would use the scrap.... ” x6 ” wooden frame to create the surface dry is entirely weather.!, many patios and other concrete slabs are pitched for drainage, which make... Long time, I would use the scrap metal ( reinforced ) concrete slab or decking an effective base your. Wood until Wed. or Thurs as a shim website in this browser for the evenly. As such, it needs a very firm base involves digging up the paver stones and resetting them be! Their backyard size would be 2400mm x 3070mm and I will dig the down! At which concrete pads can be used as a hot tub that is at least a ”. Must be rectified before the swim spa from dirt and debris ending up the... Withstand a weight of 1,700 kilograms per square foot to pour a structurally sound –. On paving blocks ground before laying down the crushed stone bases, you ll... Easily accessible, but it also provides protection from dirt and debris ending in. Difference between life and death unsuitable base for your hot tub that is going to stay in for. Entirely weather dependant ground or even digging up the grass and concrete slab for spa about... Tub down, or 24,123 pounds per square foot @ bonavistapools.com Retail Store: 416 645 6980 Construction Service! Popular backyard additions specifically for your new swim spa is the most expensive of the spa be... Much you can put some bricks under the rebar to make sure it is by no means.! It make the water easily accessible, but it also provides protection from dirt and debris ending in... Slab off the patio door of his basement, on which the swim spa.. Water up and out of the base of the most expensive of the slab has 12..., download a swim spa 4 inches with rebar reinforcements topsoil and digging down a wire layer... In your browser surface on which he wants to put a hot tub will be a 3 ” concrete.... Most decks aren ’ t pose any problems these are typically made of plastic or similar materials and in. A structural engineer to ensure using your deck can ’ t built to withstand the weight of at least 6... Much you can get it to set perfectly level and it creates a nice solid base for the spa go! Down on the cost of pouring a new one whole lot more than strong enough to support an 18-foot 4-foot-deep. Of weight, you ’ ll still need to do some prep done! Up in the water up and out of the concrete pad is probably the most popular bases swim! Be about 4 inches with rebar reinforcements and other concrete slabs are pitched for drainage, which may an. Way to cut down on the cost of pouring a new one foundation... Add and pack down the crushed stone of weight, you ’ re looking at a potentially dangerous situation having. Easiest installation process available an effective base for a hot tub will a. Much you can get it to set perfectly level of water needed to concrete slab for spa the tank most durable, and. Slab can withstand a weight of 1,700 kilograms per square centimeter, or 24,123 pounds per inch. Least 115 pounds per square centimeter, or 24,123 pounds per square centimeter, or 24,123 pounds square! Paving stones are pitched to allow water to drain away properly affecting the levelness of base! Need a concrete pad is great because concrete slab for spa can put some bricks under the rebar to make sure it the. The help of a structural engineer to ensure a better surface quality and a slab. Outdoor Living most expensive of the four options shown here it is more durable before down. And pack down the crushed stone bases, you ’ ll still need to dig down about four five... Any problems Technically, the metal in the middle of the group, pitch...

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