Putting A Hot Tub On A Roof Deck

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.

Putting a hot tub on a roof deck.

Build a solid deck base to support the hot tub weight. 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. If you re building a new deck the slab should be formed and poured at the same time as your concrete footings. A 3 1 2 to 4 inch slab is usually sufficient experts say.

Most raised decks are constructed to hold a family maybe a few friends a barbecue and some outdoor furniture. 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. Decks built ground level up to 2 feet off the ground can support up to 100 lbs per square foot. When it comes to structural support the safest bet is a solid base independent of the deck.

It seats four people and holds 195 gallons of water. The added support posts should be no more than 30 apart ideally placed in poured concrete. If you re building a new deck or patio pick the spa first so you can integrate it with the design. But if you want to go the post and cement footing route beaulieu recommends consulting a professional to ensure your load calculations are correct.

How do you add more footing under the deck. Here s a link to a hot tub we ll use as an example in the formula. Yes you can put a hot tub on a deck. The spa guy gives general information on how to reinforce a deck to keep the deck from sagging or even falling.

The area under the hot tub should be framed as a separate system with its own footings. However larger tubs may require something more substantial. Put your tub on a firm foundation whether a deck or patio with a cement pad concrete pavers brick or a new smartdeck pre fab alternative. Your tub is only for four people and it is inflatable so the numbers will be less.

Figure 1 hot tub on raised deck. Sufficient for most hot tubs. Tall decks and hot tubs. But decks 2 feet or higher will need added support.

Using the values above use the following formula to calculate the weight a hot tub will put on your deck. Check with local building code to determine spacing requirements for posts. It is very simple and you can buy the materia. All of these items are pretty light weight things when compared to a hot tub or spa that is filled with water.