Building the Louvered Section

Ripping a beveled edge

The 2x6 cedar stock for the top and bottom frames of the louvered section receives a 20° bevel, which helps prevent water from collecting on the horizontal surfaces.

Cutting out the frame

The author miters the ends of the pieces for the top and bottom frames.

Glue the joints...

After drilling for pocket screws, the author applies exterior glue to all of the frame joints.

...Then screw them together

Author assembles the frames on a flat surface, driving pocket screws to secure the corner joints.

Check for square

Diagonal measurements confirm that the frames are perfectly square.

Chamfering the posts

After cutting four posts for the corners of the louvered section of the cupola, the author chamfers the edges of posts on a router table. Stops clamped to the table fence govern the amount of chamfer cut into each edge.

Post location layout

Layout lines at the corners of the frame guide the placement of the corner posts.

Post placement

Corner posts sit on layout lines on the frame.

Attach the posts

After the assembly is flipped over, long screws attach the frame to the posts.

Top frame

Frame for the top of the louvered section goes together like the bottom frame with the joints glued and pocket-screwed.

Glue goes on first

Author preps the ends of the corner posts with exterior glue.

Attach top frame

The top frame for the louvered section secures to the posts with long screws.

Install beveled sill

A beveled sill nails to the bottom frame to help shed water from the horizontal surfaces.

Louver jamb layout

Author lays out louver jambs, spacing the louvers evenly from top to bottom, and marking them at a 35° angle, leaving enough room at the top for an arched frieze.

Stacked louvers

Louver stock is ripped with a 35° angle along one edge. To install the louvers, spacer blocks glue and nail to the jambs first, and then the louver stock nails in on top of the blocks.

Scribing the arch

To scribe the arch for the frieze board, author uses a batten made from a thin rip of wood.

Cutting the arch

A band saw cuts the arch in each of the frieze boards. After smoothing the edges, a chamfer is added along the outer face.

Frieze finish

The arched frieze nails in at the top to complete each louvered side.

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