Installing Hot Tub On Roof Deck

For spas located on top of a deck stairs are in order.

Installing hot tub on roof deck. This slab should be at least 4 inches thick and be fully supported from below. Most hot tub manufacturers recommend a concrete slab base over other types of bases. A solid flat surface is required for a hot tub. But first consider that the floor load of a full hot tub 87 inches square is about 2 1 2 tons.

Place additional piers or posts including foundations that are at a minimum 1 foot below the frost line at distances of less than 30 inches from the center of one post or pier to the center of the next post or pier below the foot print of the spa or hot tub to be added. Aside from the actual hot tub itself you ll have to consider maintenance installation and how much it will cost to make sure your deck is compatible with the 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. Costs of installing a hot tub.

Tall decks and hot tubs 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. Many builders recommend installing the hot tub so that its edge is 17 24 inches above the decking. A concrete slab is effective at supporting a hot tub. No doubt you ve seen spas that are flush with deck surfaces an elegant look but one that can prove hazardous.

A deck may be able to support the hot tub as well. For most a slab four inches thick should suffice unless one decides to get a very large hot tub then something thicker should be poured.