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How to Angle Corners and Joists

Angled corners and joists allow you to create unique deck designs with interesting shapes. A deck not only makes your backyard more visually appealing but also significantly increases the amount of area you have available for outdoor enjoyment. When constructing a new deck, look outside the box of the typical square or rectangular designs and come up with an original deck concept that is tailored to your living space and requirements. You can construct intriguing deck shapes by using angled corners, such as ones that follow the boundaries of your yard, work around obstructions such as trees and landscaping, or create additional space for outdoor cooking equipment and patio furniture.



By building a deck frame with angled or clipped corners, you may avoid giving the deck a boxy appearance and soften the edges at the same time. It will be more difficult to lay the joists and provide the necessary support for your deck because of the angles, but it will not be impossible to do so. We will guide you through the entire process, including how to install angled joists and level the beams. In order to learn how to angle corners and joists when creating a deck structure, follow the procedures that are provided below.


Read more: Rooftop Deck Construction


Level The Beams

There is no requirement for a particularly tight fit at the point where the two beams connect; nonetheless, the beams themselves must be at the same level. If it is necessary, place a shim on top of the post that supports one of the beams. For the purpose of securing the beams to one another, drill pilot holes and then drive in screws or nails.


Mark The Angled Cut

Assemble the perimeter frame in the same manner as you did when you were laying out the deck, place it atop the beams, and fasten the rim joists to the ledger. First ensure that everything is square, and then use screws to secure the rim joists to the beam.


First, measure out from the corner an equal distance in both directions to determine where to mark the angled cut line. Mark both the header and the rim joist once you have aligned a straight 1x4 with both of the measurements. Utilizing a square, transfer the marks onto the respective faces of the boards.


Cut Header And Rim Joist

It is recommended that you make use of one of the temporary supports that you constructed in order to outline the layout in order to hold up the header. The rim joist is supported by a beam. Cut the header and the rim joist using a circular saw with the blade set at a 90-degree angle.


Cut To Fill Corner

Take the distance between the cuts made on the header and the rim joist, and then use that measurement to guide the cutting of an angled piece to fill the corner. Drill pilot holes while holding the piece that has been cut at an angle in place. Nails or screws can be used to secure it.


Cut And Install Joists

Joists should be cut and installed with the crowns facing upward. Hangers for the joists can be attached to the ledger, or screws or nails can be driven through the header and into the joists. Hold the joist in place while you make a mark on it to get the measurement for cutting it at the angled part. Have a helping hand hold one end up against the ledger so that its bottom edge is nearly level with the top of the ledger. While one of your assistants measures to ensure that it is parallel with t