It is essential to attach stair stringers to decks properly. You will need to consider several factors to ensure that the stairs are anchored securely. The first is to determine the height of the deck. This measurement will affect the rise of the stairs. If the deck is higher than the stairs, you may need to add a landing at mid-step. Additionally, the height of the deck will affect the number of stringers needed.
When determining the height of the stairs, use the Stair Calculator. This will calculate the total rise of the stairs and help you know where to place the stringers. Typically, the total height of the stringers should not exceed 16 feet. For long runs of stairs, you might want to add a ledger board below the deck framing. However, if you are installing a deck with a lower elevation, you may be able to fasten the stringers to the rim joist.
Once you have determined the height and placement of the stair stringers, you can start cutting them. These are made with a circular saw. Before deciding on the length of the cut, check that the stringers are properly level. If they are not, the stair assembly might bounce. In addition, you might need to recut the stringer or redraw the layout.
The stair stringer pattern should be identical for each step. You can do this by using a stair stringer as a template. Cut each stair stringer to a size that will be adequate for the treads. Also, be sure to set the stair stringer into a joist hanger. Normally, the joist hanger will be screwed into the backside of the stringer.
As you attach stair stringers to the deck, make sure that they are level. You should install them about eight 5/16″ from the finished height of the deck. This will keep them from sagging. After you are finished, you can cut the fascia. Be sure to wear safety glasses when working on the deck. Adding posts can also be a way to prevent movement of the stair stringers.
To attach the stair stringers to the deck, you will need a rim joist and two joist hangers. If you do not have a rim joist, you can run posts directly under the deck. However, this will add extra work to the project.
Make sure that the stair stringer hangers are installed on the rim joist and low enough to meet code. When securing the stair stringers, you can use 1/2″ diameter lag bolts. Another option is to use galvanized brackets. Although this option requires you to make modifications to the concrete pad, it is less expensive than using masonry bolts.
Attaching stair stringers to the deck can be a simple task if you know what to do. The steps are supported by 2×4 supports. Usually, the kicker board is located on the bottom step. This can be secured to the concrete pad by a masonry bit.