how to make decking steps

"Mastering DIY: Step-by-Step Guide to Building Decking Steps"

By Joshua HarrisNovember 19, 2025

Creating decking steps is a rewarding DIY project that enhances the functionality and aesthetics of your outdoor space. This step-by-step guide will walk you through the process of building safe, durable, and stylish steps for your deck.

Materials Needed

Before you start, gather the following materials:

Pressure-treated lumber (for steps and stringers)
Deck screws (2-1/2" and 3-1/4")
Galvanized hangers
Concrete pier blocks
Landscape fabric and gravel (for drainage)
Deck stain or sealant (optional)
Tape measure, circular saw, drill, and level

Planning Your Decking Steps

Before you start building, plan the layout and dimensions of your steps. A standard rise is 7-1/4" and the tread depth is 10-1/2". The total run (horizontal distance) should be at least 36" for safety.

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Calculating Stringer Length

To determine the stringer length, use the following formula:

Total Rise	Number of Steps	Stringer Length
72" (6 steps)	6	67-1/2"

Building the Steps

Once you've planned your steps, it's time to start building. Begin by cutting the stringers to the calculated length and marking the step locations with a square.

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Cutting the Stringers

Use a circular saw to cut the stringers at a 75° angle, creating the step notches. Ensure the notches are centered on the stringer marks.

Attaching the Stringers

Attach the stringers to the deck frame using galvanized hangers and 3-1/4" deck screws. Ensure the stringers are level and properly spaced (16" on center).

Building the Treads

Cut the treads to size and attach them to the stringers using 2-1/2" deck screws. Ensure the treads are level and flush with the deck surface.

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Installing the Concrete Pier Blocks

Dig holes for the concrete pier blocks, ensuring they're deep enough to sit below the frost line. Fill the holes with gravel for drainage, then place the blocks and level them.

Finishing Touches

Once the steps are complete, apply a deck stain or sealant to protect the wood and enhance its appearance. Allow the steps to cure for a few days before using them.

Building decking steps is a challenging but rewarding project. By following this guide, you'll create a functional and attractive addition to your outdoor space. Enjoy your new steps!