Deck on Grade: Framing the Curve

Archadeck of Suburban Boston frames the curved edge of a treated-wood deck set on grade.

Laying Out the Radius

With joists running long, Eric Roberts scribes a radius curve onto the joist ends using a simple string-and-pencil compass.

Cutting Beveled Ends

Roberts makes angled cuts on the joist ends in place with a circular saw.

Finishing the End Cuts

Roberts finishes the bevel cuts on the joist ends using a recip saw after the circular saw bottoms out.

Kerfing the Band Joist

Roberts cuts deep kerfs into the treated 2x8 that will form the edge framing for the deck, to enable the member to bend around the radius curve.

Closer Kerf Spacing

Roberts makes closely spaced kerf cuts at the end of the framing member, which will have to curve more tightly at that location.

Making the Bend

Roberts pushes the band joist into position around the joist ends.

Lining Up

With a pry bar, Roberts matches up the top edges of the deck joist and the curved band joist.

Clamped Into Position

Pinning the Band Joist

Roberts fastens the curved band joist in place with a nailgun.

Reinforcing with Screws

Roberts strengthens the connection using LOK structural fasteners.

A Notch at the Patio

Where the wood-framed deck passes over the concrete paver patio, the members are notched for a nice fit.

A Smooth Curve

A look at the curved band joist of the deck edge, viewed from above.

Ready for Decking

The completed deck frame sits ready for decking and trim.

Join the Discussion

Please read our Content Guidelines before posting

Close X