Putting A Hot Tub On A Roof Deck

Using the values above use the following formula to calculate the weight a hot tub will put on your deck.

Putting a hot tub on a roof deck.

Tall decks and hot tubs. Most raised decks are constructed to hold a family maybe a few friends a barbecue and some outdoor furniture. 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.

Sufficient for most hot tubs. When it comes to structural support the safest bet is a solid base independent of the deck. But decks 2 feet or higher will need added support. Figure 1 hot tub on raised deck.

The added support posts should be no more than 30 apart ideally placed in poured concrete. A flat level surface such as a concrete slab is the ideal location for a hot tub. Install decking up to from hot tub to leave room for expansion contraction and slight shifting of both the deck and the hot tub. 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.

All of these items are pretty light weight things when compared to a hot tub or spa that is filled with water. It seats four people and holds 195 gallons of water. 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. 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.

The area under the hot tub should be framed as a separate system with its own footings. If you re building a new deck or patio pick the spa first so you can integrate it with the design. 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. Yes you can put a hot tub on a deck.

Check with local building code to determine spacing requirements for posts. It is very simple and you can buy the materia. If you re building a new deck the slab should be formed and poured at the same time as your concrete footings. Build a solid deck base to support the hot tub weight.

The spa guy gives general information on how to reinforce a deck to keep the deck from sagging or even falling. However larger tubs may require something more substantial. A 3 1 2 to 4 inch slab is usually sufficient experts say. Your tub is only for four people and it is inflatable so the numbers will be less.