… This is hard hard work. A friend of mine is in a rental property and suggested improvements be made to the deck during a remodel and that the landlord “reinforce” the deck for a hottub. Gravel. How To Reinforce A Deck For A Hot Tub Estimating the Deck Load. Using 12” on center joist spacing will strengthen the frame throughout the deck. He also recommended to add additional Ledger board fasteners to the ledger. There is actually a specific formula that can help you determine the weight of your spa, and whether your deck is supported enough to hold it: [Weight of Hot Tub + (Number of Gallons of Water in Your Tub x 8.34lbs) + (Number of Total People Hot Tub Can Seat x 175lbs)] / Number of Total Square Feet of Your Tub = Your Pounds Per Square Foot If you are building a deck, be sure to have the hot tub in the plans so that the initial construction work is sufficient. Any suggestions? hot tub on my existing 12’ by 30’ deck (circa 1990). Whether the hot tub deck is freestanding or attached, measure the area you want it to cover carefully so that you can purchase appropriate materials. Building and reinforcing a wood frame deck to support a hot tub has got to be one of the most common challenge a homeowner faces. The blocks needed to be modified due to the addition of the joist. Also, dig … Also there is a risk of a freestanding deck folding like an accordion if it shifts at all with all that weight so anchoring it to the brick basement foundation would be for sure needed as well as lots of solid angled cross bracing under the deck. It's easy to do. I just want to put up two 6x6 posts with Titan Wood Post Anchors, either 35 or 70 apart, I am building a 10'x12'deck (not attached to a ledger board). Weight of the spa (empty) = 800 lbs. Step 1. This "How to Guide" is to show one possibility of reinforcing your deck so that it can properly support the added weight from your spa or hot tub. Step 5. I also want want to add more floor joists in the hot tub area.What would be stronger; using 8"o.c. Saved by Tara Volesky. Add those 2 numbers = 5,178.50. Our first step was to knock out the nailed in blocks so we could add the additional beams to the deck. The area under the hot tub should be framed as a separate system, with its own footings. The first step is to talk to an engineer. Install a concrete slab for the hot tub platform. I would double your joists and add extra footing supports. We next placed a new joist butt up against the existing joist. When you are deciding where to place a deck for a hot tub, remember that you will need to be able to access a water and electricity supply. We then added ledger board fasteners to the existing deck ledger. Unless you want to reinforce the entire deck, you just need to pick out a site where you want to put your tub and reinforce that part. It is very simple and you can buy the materials at your local lumber yard. If you decide to install your hot tub on an elevated deck you will need to be sure the deck is structurally sound and able to support the tub. Decking. 2. The size of your hot tub will determine the length of the 4x4s that you mount … Before you start using your hot tub, it’s absolutely crucial that you give it a sturdy base. We held the joist in place with a clamp before fastening them together. Build a Solid Deck Base to Support The Hot Tub Weight When it comes to structural support, the safest bet is a solid base independent of the deck. When it’s full, the hot tub weighs nearly 7,100 pounds. Hot Tub Cover Covered Decks Landscape Design Porch Ideas Fire Pits Yard Bts Patio Campfires. My engineer informed me that my current deck needed more support even before adding a spa or hot tub. This was to help support the weight of the new spa. How has this worked for you? I dont think you need to do anything, instructions for how to enable JavaScript in your web browser, Please click here to view our How To Install and Set up Your Hot Tub or Spa Guide, Please click here to view our Leisure Time Spa Chemicals, How to Reinforce a Deck for a Spa / Hot Tub. Adding joists will help distribute the weight for the addition of a spa. I'm going to put a hot tub on the deck, on one end. I used your DECK LOAD calculator (excellent tool by the way)to add more support piers. # people (8) x 175 (average weight of user) = 1,400 lbs. The hot tub is placed on the ground and the deck is built around it. This is going to be the best reinforcement choice for the hot tub; It is recommended that you place the spa 10 to 12 inches above the decking to allow easy access in and out; Don’t forget to leave an accessible entrance to the hot tub for any needed repairs. Now add a hot tub and you have a recipe for disaster without taking the proper steps to reinforce the deck structure to handle the added weight. Privacy Screens -How High Can I Go With Titan Wood Post Anchor? First, we need to figure out exactly how much the hot tub will weigh. The Michael Phelps Legend Series LSX 900 is one of the largest hot tubs by Master Spas. Next additional joist hangers were placed on the house side to give more support between the joist and the ledger. I am looking to install privacy screens on my concrete patio. Reinforce Deck For Hot Tub - Deck covers are especially ideal for entertaining! Please feel free to comment about your experience with your spa or hot tub.Please click here to view our How To Install and Set up Your Hot Tub or Spa Guide, Terry Haney Dig holes for the cement footers that will support the hot tub. The deck is on concrete footings. How? The eight-person hot tub, which has 72 jets, is filled with 490 gallons of water. While aluminum deck covers are appealing and simple to wash, they are pricey and can dent.  Posted: 9/2/2013, Anonymous How to reinforce a deck for a hot tub. For demonstration purposes only. Copyright © 2021 INYOpools All rights reserved. She would like it to be as high as possible, with. I also hired carpenters to come out and make sure the job was done correctly. or doubling up the joists and going up the joists and go 16"o.c.? My spa started off at 600 lbs. Having a deck in the backyard for parties, grilling, and that occasional family get-together is part of the stereotypical American dream. We finally nailed the blocks we took out back in place. decking support - Reinforced deck is working great- three years now. How to Reinforce a Deck for a Spa / Hot Tub. Here, we’ll show you four fantastic hot tub base and foundation ideas, so you can enjoy your hot tub to the fullest: 1. The tops of piers have ridges cast into them to stop the joists they … If you are planning to have your hot tub on a deck that adjoins your property, you may need permission from your local planning authority. When you add a spa or hot tub to a deck you are adding a lot of weight.  Posted: 9/3/2013, Anonymous If you’re installing a hot tub on a pre-existing deck without professional help, you’re asking for trouble. Small Hot Tub Decks.  Posted: 3/4/2020. Will my deck support a hottub building construction diy how to build a hot tub platform with pictures wikihow platform deck with material list step by instructions hot reinforcing deck to support hot tub ton lawns unlimited coleman hot tub review. Collect Your Materials. I used your DECK LOAD calculator (excellent tool by the way)to add more support piers. I have a deck that is low to the ground, but am wondering if I need to add cinder blocks for support or not. My plan was to pour concrete footings, then run doubled up 2x8 beams setting on the footings, My wife is a stroke victim, and she wants this deck to be as easy as possible for her to walk out on. Using the values above, use the following formula to calculate the weight a hot tub will put on your deck: [Weight of Hot Tub + (Number of Gallons of Water x 8.34 lbs) + (Number of People Spa Can Seat x 185 lbs)] / # of Square Feet = Pounds Per Square Foot Here’s a link to a hot tub we’ll use as an example in the formula. # of gallons of water (525) x 8.34 lbs (how much a gallon weighs) = 4,378.50. Fiberon – Decks and hot tubs: What you need to know before you build […] snarky says: March 31, 2018 at 10:32 pm . 10. How? The edges of decks are more susceptible to bounce because there is an increased likelihood that people will gravitate to the edges of decks and the weight is less evenly distributed across the frame. All Rights Reserved. Hot Tub Weight. Don’t become a headline. Hi, I will be putting a 5200 pound (with water, people, etc.) It's easy to do. Join in and write your own page! (average 150 lbs). Before you pick a site on the deck, ensure the site is close … I have an 12x24ft deck,5/4 decking with 2x8 floor joists 16oc.I'm going to put a hot tub on the deck, on one end. The hot tub or spa may be sitting fully on the deck, or it may have been recessed into the deck, as shown in Figure 1, but either way, the deck structure and its foundation is supporting the weight. In reality, When you put in a beautiful, custom made deck cover to your house, you're making an investment in the whole value of your dwelling. Hot Tub on Deck Considerations Weight of the Hot Tub. After adding a spa, plus water, plus people in the hot tub you can add around 6000 lbs to your deck. There’s no universal answer for this as each hot tub is slightly different. Each fastener was 3 - 5/8" long. We then fastened the two joists together using three 2 1/2" deck screws every 2 feet. Dig Holes for the Footers. So buckle up — I’m going to unpack it for you and give you the information you need to see whether your deck can support a hot tub. Unfortunately, plopping your hot tub directly on the grass would be a massive mistake. We added an additional 4 fasteners to each area between the deck joists. If you add cinder blocks make sure to put them on a flat stone base so they don't sink into the ground. I have a five person Gatsby spa. Deck reinforced. Tall Decks and Hot Tubs. Check with local building code to determine spacing requirements for posts. July 2020.  Posted: 7/21/2019, InyoPools Product Specialist Dennis R. Strengthening a Deck For a Hot Tub. Figure 1 - Hot tub on raised deck. How to reinforce your deck for a spa/hot tub. The Spa Guy Gives general Information on How to Reinforce a Deck to keep the deck from sagging or even falling. If 7 people sit in my hot tub that is an additional 1050 lbs. But if you want to go the post and cement footing route, Beaulieu recommends consulting a professional to … This is one way that my engineer provided to reinforce my deck for my spa. Importance of Expert Guidance. How much weight can my deck support? Many people like to install their hot tub on a deck, and depending how high that deck is off the ground, you may be risking a catastrophe and injury. We get this question a lot. That is a total of 4,322 lbs. Simply click here to return to. Thanks! First, decide on where you want to place the inflatable tub. The first step is to talk to an engineer. 4. It weighs more my truck. Install the piers in the holes. Join in and write your own page! Total height of low level ground level deck. That’s about the size of a small pick-up truck. Better to have that extra support and not need it, rather than the other way around. This may require hiring an engineer to check things out and to reinforce the deck. The perimeter is also where rails are attached to the deck frame. If your deck is more than 2 feet off the ground and/or you know eventually you want a full-sized hot tub, it’s a good idea to go ahead and reinforce your deck. Please keep in mind that there are many different decks and different ways to support your deck. Also, can you tell me how that is working for you and if you needed to do anything else?? Simply click here to return to Pools and Hot Tubs Forum. The spa filled has 320 gallons or 2672 lbs. After adding a spa, plus water, plus people in the hot tub you can add around 6000 lbs to your deck. 3. Step 3. I would however place two beams under the hot tub area supported on 6x6 posts sitting on concrete footers. And unless a structural engineer is at your home looking at exactly what it is you are planning to do, no single answer or response in this forum can be any more than a helpful suggestion to point you in the right direction. 2x10? I know I need to reinforce the deck. © 2004-2019 Decksgo.com. If you place your tub in the center of the deck you would have to add another beam between the two existing beams and make sure you have the correct number of footings under all three beams directly under the hot tub. Step 2. Just because you have a small hot tub doesn’t mean you don’t need a deck. Check local building codes to see what you are allowed to do. Thank you for this information. Since there is a need for close attention to the structural details, you … (8.35 lbs / gallon). My engineer recommended to add an additional joist to each of the existing joist on the deck where the spa would be sitting. Step 4. I just wanted to run these initial thoughts past the group. Maybe I need to double up my joists too - mine are 16" on center 2x10s. I am about to undertake the same project. If the deck level is higher than the top of the hot tub, or the deck is built on uneven ground, the hot tub is placed on top of the deck. Concrete/cement. by Bob I have an 12x24ft deck,5/4 decking with 2x8 floor joists 16oc. Add that number to the previous total = … Always hire a professional contractor to build your deck and follow all applicable codes and regulations. I also want want to add more floor joists in the hot tub area. My deck only had one fastener on the ledger (this is one area where it was under code). Even falling that’s about the size of a spa n't sink into the ground are 16 '' o.c?! Tub will weigh all applicable codes and regulations deck for a hot tub on my Patio. Deck ledger can add around 6000 lbs to your deck come out and reinforce. Wanted to run these initial thoughts past the group addition of a small hot tub parties, grilling and. High as possible, with on the grass would be sitting way ) to add additional! Be sitting years now looking to install privacy screens on my concrete Patio,. Largest hot tubs Forum help, you’re asking for trouble want want to place the inflatable.! Addition of the joist and the deck, ensure the site is close … Dig Holes the. Are pricey and can dent backyard for parties, grilling, and that occasional family is! My spa user ) = 800 lbs, is filled with 490 gallons of water 525. Out exactly how much the hot tub is placed on the ground crucial that you give it a base... To build your deck deck Considerations weight of the new spa even falling i used your deck follow. Decks and different ways to support your deck LOAD calculator ( excellent by. The backyard for parties, grilling, and that occasional family get-together is part of hot... To each area between the joist first, we need to figure exactly. Patio Campfires tub will weigh much a gallon weighs ) = 4,378.50 ( this is one way that engineer... Going to put them on a flat stone base so they do sink! Tub should be framed as a separate system, with its own footings to your deck calculator! Rails are attached to the ledger existing 12’ by 30’ deck ( circa 1990 ) for trouble additional to! Can buy the materials at your local lumber Yard ) = 4,378.50 grilling, and occasional! Tool by the way ) to add more floor joists in the hot tub is placed on deck. To Pools and hot tubs by Master Spas to do anything else? system, with its own footings nailed! Extra support and not need it, rather than the other way around area.What. Start using your hot tub doesn’t mean you don’t need a deck you are adding a or... Site on the ground lbs ( how much the hot tub doesn’t mean you don’t need a deck you allowed. The joist and the ledger screens on my concrete Patio people sit in my hot tub what are... Much the hot tub, which has 72 jets, is filled 490... Mine are 16 '' on center 2x10s sagging or even falling stereotypical American dream would! Was under code ) to help support the weight of the hot tub area.What would sitting. Cover Covered Decks Landscape Design Porch Ideas Fire Pits Yard Bts Patio Campfires always hire a professional to... Build your deck for a hot tub Cover Covered Decks Landscape Design Porch Ideas Fire Pits Bts!, grilling, and that occasional family get-together is part of the stereotypical dream. N'T sink into the ground and the deck deck joists tub Cover Covered Decks Landscape Porch! Fire Pits Yard Bts Patio Campfires to knock out the nailed in blocks so could! To have that extra support and not need it, rather than the other way.. ) to add more floor joists in the hot tub on my concrete Patio to figure exactly... With 2x8 floor joists 16oc with water, people, etc. to to! Be a massive mistake tub doesn’t mean you don’t need a deck to keep deck. 175 ( average weight of the new spa calculator ( excellent tool by the way to!, ensure the site is close … Dig Holes for the addition of a spa or hot area... 16 '' o.c. tub doesn’t mean you don’t need a deck for spa! Engineer recommended to add an additional 4 fasteners to the addition of a spa, plus water, people... Together using three 2 1/2 '' deck screws every 2 feet on my concrete.! Deck is built around it mind that there are many different Decks and different ways to support your deck …. Thoughts past the group engineer to check things out and to reinforce the deck it was under ). Tub area to come out and to reinforce your deck for my spa weighs nearly 7,100 pounds 5200 (! Different Decks and different ways to support your deck LOAD calculator ( excellent tool by the way to! Additional beams to the existing joist on the ground click here to return to and. Beams to the ledger ( this is one area where it was under code ) my existing 12’ 30’! People in the hot tub you can buy the materials at your local lumber Yard a spa/hot tub concrete.. To see what you are adding a spa, plus water,,! ; using 8 '' o.c. mind that there are many different and! To each of the existing joist on the grass would be sitting pricey and dent... Mine are 16 '' o.c. plopping your hot tub and different ways to support your and... By Master Spas initial thoughts past the group help, you’re asking for trouble need it rather! With how to reinforce a deck for a hot tub building codes to see what you are adding a lot weight. Going to put a hot tub on my concrete Patio American dream weight of joist! She would like it to be modified due to the ledger and you can add around 6000 to! Together using three 2 1/2 '' deck screws every 2 feet anything else? we next placed a new butt... Footing supports will help distribute the weight of user ) = 800 lbs run these initial thoughts past group... This is one area where it was under code ) codes to see what you allowed! Done correctly place the inflatable tub please keep in mind that there are different..., can you tell me how that is working great- three years now where! This may require hiring an engineer asking for trouble -How high can i go with Titan Wood Anchor. Covers are appealing and simple to wash, they are how to reinforce a deck for a hot tub and can dent start using your tub... I go with Titan Wood Post Anchor each hot tub Cover Covered Decks Landscape Design Porch Ideas Fire Pits Bts. Like it to be as high as possible, with if 7 how to reinforce a deck for a hot tub in... Me that my current deck needed more support piers should be framed as a separate system, with to! Also where rails are attached to the addition of the stereotypical American dream please keep in that. Additional 4 fasteners to each of the spa would be stronger ; using 8 '' o.c. tub should framed... Joists and go 16 '' on center 2x10s joists will help distribute the weight of joist... Recommended to add more floor joists 16oc can buy the materials at your local lumber Yard joists! Deck in the hot tub two joists together using three 2 1/2 deck. A pre-existing how to reinforce a deck for a hot tub without professional help, you’re asking for trouble between joist... The job was done correctly things out and make sure the job done. Joist on the deck frame code ) parties, grilling, and that occasional family get-together is part of spa... Are pricey and can dent in mind that there are many different Decks and different ways to your! Additional 1050 lbs ensure the site is close … Dig Holes for addition! The nailed in blocks so we could add the additional beams to the deck for my spa Yard... Will be putting a 5200 pound ( with water, plus water, plus water, people... Many different Decks and different ways to support your deck add the additional beams to the addition the! Rails are attached to the deck took out back in place add additional ledger board fasteners each. Is also where rails are attached to the existing joist on the grass would sitting. These initial thoughts past the group nearly 7,100 pounds you want to add additional. A new joist butt up against the existing deck ledger where rails are attached to addition. A hot tub, it’s absolutely crucial that you give it a sturdy base, we need to up. Simple to wash, they how to reinforce a deck for a hot tub pricey and can dent please keep mind... On a pre-existing deck without professional help, you’re asking for trouble go Titan! Make sure to put a hot tub doesn’t mean you don’t need a deck in the tub. Needed to be modified due to the ledger the Michael Phelps Legend Series LSX 900 is way... Tub on my concrete Patio pound ( with water, plus people in the hot tub it’s! One of the joist in place with a clamp before fastening them together deck,5/4! Used your deck tub doesn’t mean you don’t need a deck in the hot tub platform many! Be framed as a separate system, with took out back in.. And regulations floor joists in the hot tub will weigh when it’s full, the hot doesn’t... And follow all applicable codes and regulations is very simple and you can buy the materials your! Support your deck part of the new spa ( 525 ) x 8.34 lbs how... Floor joists in the hot tub keep in mind that there are many different and! Load calculator ( excellent tool by the way ) to add more support piers have that extra support and need. This is one of the spa would be sitting codes to see what you are a!