Often, we come across new swim spa owners who already have a stone patio laid in their backyard. When a swim spa is full, it often weighs more than 9 tonnes. 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. You’ll need to do some prep work beforehand to create the flat and level space required for swim spa installation. However, there needs to be prep work done to the ground before laying down the crushed stone. To find out more about swim spa installation, download a swim spa buyer’s guide. How long you wait for this to dry is entirely weather dependant. 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. All rights reserved. The pad size would be 2400mm x 3070mm and I will dig the ground down to the desired level to fit the slab. All Rights Reserved. Installing a Hot Tub is Less Expensive Than You Might Think! Crushed stone bases have the added benefit of allowing water to run off without affecting the levelness of the base. If you have an existing patio made of concrete bricks, make sure it’s in good condition and is level (not angled for drainage). Curing provides a continuous supply of moisture to ensure a better surface quality and a stronger slab. Retail Store: 416 645 6980 « 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. Almost anything that is solid can be used as a shim. Because this is a potentially dangerous situation, having it installed correctly … Some steel reinforcement should be left exposed to allow the electrician to bond the spa to the concrete slab. It can be formed in many shapes, the minimum thickness we recommend is 4 inches with rebar reinforcements. It’s best to enlist the help of a structural engineer to ensure using your deck won’t pose any problems. However, most patio paving stones are pitched to allow water to drain away properly. 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. Step 1 Stake out the perimeter of the slab you want to pour. The spa must be placed on an approved level surface. A portable spa requires a structurally sound base – typically a level, reinforced concrete slab or decking. The slab thickness should be 6", use 4000 psi concrete, you do not need footers. 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. If it isn’t completely level, the resulting water pressure will, over time, cause the walls of the swim spa to collapse. Estimate the labor price to pour concrete vs. buy precast cement pads. 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 slab is 4m by 4.8m and 100mm thick. Is there any solution to leveling the slab, short of breaking and pouring a new one? Required fields are marked *. 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. 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’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. 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. 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. This may require re-leveling the ground or even digging up the paver stones and resetting them to be perfectly level. 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. I won't remove the framing wood until Wed. or Thurs. If this is the case, that pitch must be rectified before the swim spa is placed on them. Concrete Pad. 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. The fourth cable, the ground cable, is 6-gauge. Cheers Shea . Because this is a potentially dangerous situation, having it installed correctly can literally mean the difference between life and death. Because they may already exist, quite often swim spas are installed on paving blocks. 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. Concrete Slab for Spa Pool. Posted 1 month ago. Re: spa pad or concrete slab? They can also sink or buckle over time which can affect the evenness. 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. If it’s too difficult to work with an existing set of patio stones, you might consider removing them and laying a fresh set. A customized poured concrete pad is an even better choice. The amount of water needed to fill the tank is not insubstantial by any means. We tie a mat of rebar 12 inches on center for reinforcement, use 1/2" rebar, also called (#4), and tie together with wire ties. 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. (no it won’t cause the slab to crack). Although they’re not a permanent solution they can be good for a quick and cheap installation. As the name suggests, concrete pads are a slab of concrete onto which you place the swim spa. 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. Run twine between the stakes. Not only does it make the water easily accessible, but it also provides protection from dirt and debris ending up in the water. In cold climate areas lay down a 1” or 2” layer of closed cell foam board under the hot tub area of the slab. 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. Email: info@bonavistapools.com This involves digging up the grass and topsoil and digging down a further four or five inches. 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. The problem is - the slab has a slope away from the house. Slabs for hot tubs generally are 8 feet by 8 feet. The concrete slab for the hot tub would need to be a minimum of 4 inches or 10cm’s thick, ideally 6” or 15cm. 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. 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. If it isn’t completely level, the resulting water pressure will, over time, cause the walls of the swim spa to collapse. These are typically made of plastic or similar materials and come in interlocking pieces. Your email address will not be published. However, many patios and other concrete slabs are pitched for drainage, which may make an unsuitable base for your hot tub. 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. 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. As the name suggests, concrete pads are a slab of concrete onto which you place the swim spa. Another way to cut down on the cost of pouring a concrete slab is to use a prefabricated pad. 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. Job description. You can put some bricks under the rebar to make sure it is in the middle of the slab. 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. Putting hot tub on sloped concrete slab. Thanks! My coworker has a 12 foot slab off the patio door of his basement, on which he wants to put a hot tub. The preciseness at which concrete pads can be laid makes them very attractive bases for swim spas. Weighs a whole lot more than strong enough to support an 18-foot by round! Stable, flat and level surface scrap metal the surface bond the spa must be placed on an level. Flat, concrete slab for spa and most recommended foundation for a spa tub as this material is sturdy! 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