Stair Stringer Fabrication

What happens in this clip

The stairs for the deck are constructed using similar principles of treated lumber. The initial step involves calculating the precise dimensions for the stair stringers, which can be easily done using online tools like mycarpentry.com. Once calculated, pressure-treated 2x12 lumber is marked and cut to create the stringers. A circular saw is typically used for these cuts, ensuring accuracy for consistent rise and run of each step. The video highlights the importance of using treated lumber for longevity in outdoor conditions.

Goal: Cut accurate stringers for the deck stairs.

What's used

Tools

• Circular Saw
• Measuring Tape
• Pencil/Marker
• Pressure-Treated 2x12 Lumber

About the full video

This video provides a comprehensive overview of building a durable outdoor deck and stairs using pressure-treated lumber and metal connectors. It covers the process from demolishing an old deck and preparing new footings to framing the deck, installing the decking, constructing stairs, and preparing the surface for finishing. Additionally, it showcases the construction of a counter-height outdoor table using similar principles of treated lumber and specialized exterior fasteners, emphasizing strength and longevity for outdoor elements.

Step 2 of 6: Select Stringer Material

Select the lumber for your stair stringers. Pressure-treated lumber is highly recommended for exterior applications like decks to resist rot and insect damage. Common choices are 2x12 boards. Ensure the boards are straight, with minimal warping or cupping, and free from large knots or cracks that could compromise their structural integrity. The length of the stringers will depend on the total run of your stairs.

Open this step in the guide

Every video in How to Lay Out and Cut Deck Stair Stringers

1. Step 1: Determine Stair Riser Height and Tread Depth

   • 0:06–1:32 Calculate Stair Dimensions
   • 0:19–0:57 Calculate Stair Dimensions and Stringer Type
   • 0:51–1:37 Calculate Individual Step Rise and Total Run

2. Step 2: Select Stringer Material

   • 0:00–0:03 Cut Stringers
   • 6:08–6:51 Stair Stringer Fabrication (this video)
   • 2:20–3:14 Mark and Cut Stringers

3. Step 3: Mark the First Stringer Layout

   • 3:10–3:59 Mark the Stringer Board
   • 6:59–9:34 Mark the Stair Stringer for Cutting
   • 6:12–7:01 Marking the Stringers

4. Step 4: Cut the First Stringer

   • 6:15–7:14 Cut Out the Stringer
   • 4:16–5:49 Cut Stringers
   • 15:12–19:27 Cutting the Stair Stringer

5. Step 5: Transfer Layout and Cut Additional Stringers

   • 8:43–8:58 Cutting Remaining Stringers using Template
   • 7:14–7:47 Replicate Stringers (Pattern Use)
   • 2:49–3:44 Layout and Cut Stringers

6. Step 6: Trim the Bottom of the Stringers

   • 7:25–10:59 Mark Top and Bottom Stringer Cuts
   • 7:30–8:22 Check and Adjust First Stringer
   • 8:10–9:35 Mark Top and Bottom Stringer Cuts