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How to Angle Corners and Joists

A simple way to give your deck a unique expressive quality is to soften square corners by chamfering or clipping the corners. Usually, this is accomplished by positioning 45-degree corners that project 2’ over a cantilevered beam. This framing technique doesn’t require the installation of any extra footings or posts than a deck designed with square corners. You may be required to install footings and posts on the corners if you choose to project more than 2’ past the beam or the decks elevation is too low to position a drop beam below the joists. The corner joints will be formed by two 22.5-degree mitered cut boards.


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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
Deck Framing

How to Angle Corners and Joists

A simple way to give your deck a unique expressive quality is to soften square corners by chamfering or clipping the corners. Usually, this is accomplished by positioning 45-degree corners that project 2’ over a cantilevered beam. This framing technique doesn’t require the installation of any extra footings or posts than a deck designed with square corners. You may be required to install footings and posts on the corners if you choose to project more than 2’ past the beam or the decks elevation is too low to position a drop beam below the joists. The corner joints will be formed by two 22.5-degree mitered cut boards.


Popular Framing Articles
Deck Support Columns

How to Decorate Deck Support Columns

Browse some examples of decorative deck support posts for tall decks.

Deck Support Beams

How to Install Deck Girder, Cantilever or Drop Beams

Learn about the pros and cons of installing a cantilever, girder or drop beam to support your deck joists. This method allows for a notched post-to-beam connection.

Deck Support Beams

Determining Deck Beam Height

Learn how to measure in order to set your posts to properly position your deck beam to the correct height. We recommend sloping your deck to shed water away from the house.

Next Step: Decking Articles
Decking Installation

Decking Patterns

Installing your decking at a 45-degree angle is a popular style for decks. This can be done to reduce decking seams or just for appearance.

Decking Installation

Dos & Don'ts for Homeowners to Consider When Building a Deck

Your dream deck can take whatever shape you like. The trick is making it fit your budget and site conditions. While the deck doesn’t have to be built as a rectangle, there could be good reasons for doing just that.

Decking Installation

Best Time to Build a Deck

People often wonder when the best time to build a deck is. Learn why building a deck in winter or fall might be your best bet.

Get more helpful resources delivered right to your inbox

Explore Articles by Topic

More Helpful Resources