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How to Install Deck Stair Railings
Guardrails must be provided on the open side of a stair where it is more than 30" above the floor or grade. Stair rails must be at least 34" high, measured from the nosing of the stair treads. No opening shall allow a 4 3/8" sphere to pass through with the exception that you are allowed a larger opening provided for the triangle formed between the stair riser, stair tread and bottom edge of the bottom rail. This open space may not allow a 6” sphere to pass through it.
Be sure to lay out the position of your rail posts before installation. This is usually the trickiest part. If the top rail post is set at the rear of the tread, you will want to align the bottom post similarly. Landings and stairs that change directions will often require the thoughtful situating of rail posts to allow for a system that looks and performs well. Grippable handrails are required and must meet specific requirements.
SaveGuard rails are required on the sides of stairs with a total rise of more than 30" above the floor or grade below.
SaveSecure bottom stair rail post to stair framing with (2) 1/2" bolts or equivalent. In this case, we bolted the rail post to the riser board. You may also attach the post to the stair stringer. Make sure the rail post is long enough for a 34" minimum rail plus additional room for post cap mounting.
SaveVerify that both your top and bottom stair rail posts are plumb. Lay the bottom rail on top of the stairs to determine the correct angle. Mark the intersection of the rail posts with the bottom rail. Cut your top and bottom rails to the same length.
SaveAttach the rail connector to the ends of the top and bottom rail with screws.
SaveInstall the bottom rail centered between posts. Install your stair baluster connectors so that each baluster will have less than a 4" opening between balusters.
SaveAlign the top and bottom rail sections to mark the corresponding connector locations with a level.
SaveGuardrails on stairs must be at least 34" high, measured from the nosing of the treads. Measure and cut your aluminum balusters to fit your stair railing assembly. Next, slide the balusters over the bottom stair rail connectors. Then, slide the top rail connectors into the balusters from the bottom up.
SaveNotice that the top cap terminates into the rail post at the same height as the deck guardrail. Install the 2x4 or 2x6 rail cap over the top rail. Pre-drill and screw the ends of the top cap into the rail posts and secure the center with additional screws. Secure the top cap through the bottom of the 2x4 or 2x6 into the side of the bottom stair rail post.
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...
Installing Deck Stair Railings
Step-by-step instructions for how to install deck stair railings. Learn about the code requirements and construction tips with images.
Deck Skirting and Fascia
Skirting can be an attractive feature that can be added to any low-level deck.
Best Plants & Flowers to Brighten Up Your Deck
If you’re looking to brighten up your outdoor space this summer, try adding one of these plants or flowers to your deck or patio.
More Helpful Resources
Explore Articles by Topic
Footings
Information related to installing frost footings for decks
Framing
Learn structural framing methods
Decking
Learn about wood and composite decking materials
Stairs
An in-depth look at the complex issue of how to build stairs
Railings
How to install guardrails and handrails to meet IRC code
Features
An overview on water drainage, benches, planters and lights
Design
The basics of deck design
Planning
Learn about permits and working with contractors
Porches & Patios
Build a covered deck to enjoy all seasons
Ledger
Proper attachment techniques
Care
Maintain your deck to maintain your investment
Materials
An overview on water drainage, benches, planters and lights
Create a free account and get instant & exclusive access to all that Decks.com has to offer:
|
1,000+ How-To articles |
|
80+ Free Deck Plans |
|
Deck Planning Calculators |
|
Free & Simple Deck Design Tool |
How to Install Deck Stair Railings
Guardrails must be provided on the open side of a stair where it is more than 30" above the floor or grade. Stair rails must be at least 34" high, measured from the nosing of the stair treads. No opening shall allow a 4 3/8" sphere to pass through with the exception that you are allowed a larger opening provided for the triangle formed between the stair riser, stair tread and bottom edge of the bottom rail. This open space may not allow a 6” sphere to pass through it.
Be sure to lay out the position of your rail posts before installation. This is usually the trickiest part. If the top rail post is set at the rear of the tread, you will want to align the bottom post similarly. Landings and stairs that change directions will often require the thoughtful situating of rail posts to allow for a system that looks and performs well. Grippable handrails are required and must meet specific requirements.
SaveGuard rails are required on the sides of stairs with a total rise of more than 30" above the floor or grade below.
SaveSecure bottom stair rail post to stair framing with (2) 1/2" bolts or equivalent. In this case, we bolted the rail post to the riser board. You may also attach the post to the stair stringer. Make sure the rail post is long enough for a 34" minimum rail plus additional room for post cap mounting.
SaveVerify that both your top and bottom stair rail posts are plumb. Lay the bottom rail on top of the stairs to determine the correct angle. Mark the intersection of the rail posts with the bottom rail. Cut your top and bottom rails to the same length.
SaveAttach the rail connector to the ends of the top and bottom rail with screws.
SaveInstall the bottom rail centered between posts. Install your stair baluster connectors so that each baluster will have less than a 4" opening between balusters.
SaveAlign the top and bottom rail sections to mark the corresponding connector locations with a level.
SaveGuardrails on stairs must be at least 34" high, measured from the nosing of the treads. Measure and cut your aluminum balusters to fit your stair railing assembly. Next, slide the balusters over the bottom stair rail connectors. Then, slide the top rail connectors into the balusters from the bottom up.
SaveNotice that the top cap terminates into the rail post at the same height as the deck guardrail. Install the 2x4 or 2x6 rail cap over the top rail. Pre-drill and screw the ends of the top cap into the rail posts and secure the center with additional screws. Secure the top cap through the bottom of the 2x4 or 2x6 into the side of the bottom stair rail post.
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...
Rail Parts
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.
Deck Skirting and Fascia
Skirting can be an attractive feature that can be added to any low-level deck.
The Top 10 Outdoor Fireplaces for 2022
Outdoor fireplaces can make your deck or patio cozy year round. Get our recommendations for how to choose the best outdoor fireplace.
How to Build an Outdoor Table Yourself
Our DIY guide will show you how to build an outdoor table to entertain guests and make the most out of your deck or patio. Learn more with Decks.com.
Explore Articles by Topic
Footings
Information related to installing frost footings for decks
Framing
Learn structural framing methods
Decking
Learn about wood and composite decking materials
Stairs
An in-depth look at the complex issue of how to build stairs
Railings
How to install guardrails and handrails to meet IRC code
Features
An overview on water drainage, benches, planters and lights
Design
The basics of deck design
Planning
Learn about permits and working with contractors
Porches & Patios
Build a covered deck to enjoy all seasons
Ledger
Proper attachment techniques
Care
Maintain your deck to maintain your investment
Materials
An overview on water drainage, benches, planters and lights