A few years ago I built a sunroom and we finished the walls with painted beadboard. Susan and I both love the feel of the room and when we talked about what the interior of the boat should look like we both felt that the beadboard would be a winner so after looking at different options like full 3/4" thick board (costly and heavy) and a plastic product called Azek (http://www.azek.com/viewProduct.php?id=7we) (very costly but lightweight and waterproof) we decided to try a product we found at Lowes that is a real pine board but only 5/16" thick and 3" wide (not too costly and lightweight).

I wanted to insulate the walls a little to gain some noise reduction and improved heating and/or cooling efficiency so I decided to use a 3/4" styrofoam with nailer's every 12" for the beadboard paneling.
Here's a picture of our little test wall to see how it looked. with just the insulation and nailer's.

And here is a picture of the wall with beadboard attached. I used a panel adhesive on the nailer's and a 5/8" brad to fasten the planks.

The paneling will be painted but even in an unfinished state it really dresses up the interior. I have looked at rot and old dark walls for so long now it really is exciting to see some hint of a finished look.

After Susan inspected the wall she gave me the go ahead to continue so I started across the front of the house with pretty much the same system. 3/4" insulation and 3/4" x 1 1/2" nailer's. However right below the window I used a 3/4" x 5" ash nailer as I will be attaching the helm and cockpit cabinetry to this and wanted plenty of good area to fasten to.

Here's the same area with the paneling attached.




The port side of the house has a pretty long run before we get to the head. Here's a picture of that wall with nailer's.



And here it is with the insulation.



And here it is with the paneling.



Here's a closeup of the funky detail at the front of the house where the outside bench and house meet. Fun cuts around this part I'll tell you.



This final shot shows the paneling as it meets up with our redesigned head area. The original window has been removed and my next post will explain about that redesign.



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Wado