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How Long Should My Stair Stringers Be?

When building deck stairs, you will need to determine the total height of the deck at the stairs. This is the change in elevation from the top of the deck to where you expect the stairs to land. Place a level straight out from the deck and measure to the ground or landing using a tape measure.

You also will need to establish the tread depth and riser height for each step using our Decks.com Stairs Calculator. The minimum tread depth is 10" and the maximum riser height is 7-3/4". The Stairs Calculator will also provide you the length of the 2x12 stair stringer you will need to use and the angle of the stairs.


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Learn how to anchor your deck stairs to a concrete landing pad or footings. Follow our step-by-step instructions with photos.

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Learn how to build a set of cascading or flared stairs around an angled corner of a deck.

Next Step: Railings Articles
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Installing glass rails will usually require you to build the rail frame first and take precise measurements to custom order the tempered safety glass...

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We discuss the different components that compose a wood deck rail system. Learn about rail posts, top and bottom rails, balusters and a top cap.

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Explore Articles by Topic

Create a free account and get instant & exclusive access to all that Decks.com has to offer:

Checkmark 1,000+ How-To articles
Checkmark 80+ Free Deck Plans
Checkmark Deck Planning Calculators
Checkmark Free & Simple Deck Design Tool
Staircases

How Long Should My Stair Stringers Be?

When building deck stairs, you will need to determine the total height of the deck at the stairs. This is the change in elevation from the top of the deck to where you expect the stairs to land. Place a level straight out from the deck and measure to the ground or landing using a tape measure.

You also will need to establish the tread depth and riser height for each step using our Decks.com Stairs Calculator. The minimum tread depth is 10" and the maximum riser height is 7-3/4". The Stairs Calculator will also provide you the length of the 2x12 stair stringer you will need to use and the angle of the stairs.


Popular Stairs Articles
Staircases

How to Build Box Steps for Your Deck

Learn how to build a set of box platforms to act as stairs for a low deck. You don't need to cut stair stringers.

Staircases

Stair Stringer Length

Learn how to measure the height of your deck and use our Decks.com Stairs Calculator to determine your stair stringer lengths.

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Stairway Lighting

Learn about how to install low-voltage deck stair lighting.

Next Step: Railings Articles
Deck Railing Types

Glass Rails

Installing glass rails will usually require you to build the rail frame first and take precise measurements to custom order the tempered safety glass...

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How to Choose the Right Deck Railing

As one of the most visible elements of a deck, railings add support, safety and style. Get tips for choosing the right deck railing at Decks.com.

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Deck Railing Height

All decks greater than 30" above grade must have a guardrail.

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