On Oct 1, 9:21*pm, cavelamb wrote:
Bruce In Bangkok wrote:
On Thu, 1 Oct 2009 22:39:02 +0200, "Steve Lusardi"
wrote:

Bruce,
In 2006 I helped install a new bridge on a super yacht in Italy. No fasteners were allowed to show anywhere, which is actually
quite a feat, but the most interesting observation I made was the method to install the overhead.

It was constructed of 6" wide 1/4" plywood strips tapered slightly on the edges and on both *sides square plates about 1.5 by 2.5
inches were screwed to the back side of strip with 24" spacing. These thin sheet metal plates were offset from strip to strip by a
little over one plate width. These plates were positioned 1/2 on the strip and 1/2 off the strip. These were installed on thin
lathing fastened overhead with screws in sequence, one side to the other, in the following manner. The first strip had glued to
the outboard edge a strip of industrial 3M plastic "Velcro", which made contact with a corresponding strip on the lathing strip.
The other side was then screwed to the lathe. The next strip's protruding plates were slipped under the just installed strip
between the lathe and that strip. On the opposite edge of the second plank, the plates were screwed to its lathe and so on across
the overhead until the last strip was installed and there, just like the first plank, was fastened with "Velcro" on its outboard
edge. No fastener showed. The overhead strips were very secure and easily removed for maintenance purpose, if required. Of course
these strips were first fitted, then removed, sanded smooth and finished in a spray booth with a flat white color before final
fitting. No grain or fastener showed anywhere. It was truly exquisite.
Steve

Thanks for information. This boat is a smallish 35 ' power boat that I
am refurbishing. The hull is essentially a fiberglass shell with a
encapsulated wooden frame. In addition there is a 1/2" - 3/4"
encapsulated reinforcement around each port to stiffen the cabin sides
in that area. This results in a rather "lumpy" interior which I plan
to hide.

As the motif is workboat all lighting and much of the wiring will be
run on the surface of the interior, in conduit or wire molding, so the
idea is to line the boat with 3mm ply surfaced with veneer or formica,
depending on the area.

I can bond a tee shaped strip to the hull and mount ceiling panels by
popping them under the tee but thought why not just glue the panels
in, directly to the hull.

Another poster tells me that he has used liquid nails and it doesn't
fall off so I think I'll go with that method. If worse comes to worst
and it does fall off there is always 3M 5200 - but that is a costly
method of attaching essentially decorative panels.

Lightweight paneling like that should work quite well just glued in.

Liquid Nail needs an air supply to dry it.
Trapping large amounts may cause it to take quite a bit longer to dry.

Other than that? *Go for it!

I used liquid nails to hold the sheet material on the ceiling of my
28' sailboat, it worked well. It is not nearly as tenacious as 5200
or Sikaflex but is cheaper.