Cut Stringers

What happens in this clip

Begin by acquiring appropriate structural lumber, typically 2x12s, for the stair stringers. Accurately measure and lay out the rise and run of each step directly onto the lumber. Using a carpenter's square, mark the cut lines precisely. Carefully cut the stringers using a circular saw for long, straight cuts and a jigsaw for the inside corners, ensuring "no overcuts allowed" to maintain structural integrity and a clean finish. This precision is crucial for the stability and aesthetics of the final staircase.

Goal: Prepare and cut the stair stringers with precision

What's used

Tools

• Carpenter's Square Unspecified
• Circular Saw Unspecified
• Hand saw (more labor-intensive)
• long cuts for the stringers.
• Jigsaw Unspecified
• preventing overcuts.
• Lumber (2x12s) Unspecified
• Pressure-treated lumber (for exterior use)
• Measuring Tape Unspecified
• Pencil Unspecified

About the full video

This project outlines the process of building a wooden staircase, including cutting stringers, installing them, attaching treads and risers with glue for stability, framing a support wall, and completing a lower flight of stairs. The process emphasizes precision to ensure a solid and comfortable final product.

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 (this video)
   • 6:08–6:51 Stair Stringer Fabrication
   • 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