Dave, Dennis,
The roof walk supports are made from Cedar 4x4's cut to size. i had used them in the original restoration around 1990, and they were still sound when removed but broken when removed from the roof. the trex like products i found for 4x4's had a high content of sawdust in the center thus the decition to work with the cedar again. The saddles are attached by laminating another layer of roofing rubber as a cusion, gluing with a rubber to rubber cement from the roofing supplyer. there are attached to the roof addtionaly with two lag bolts each in very loose fitting holes, followed by a generous fillet bead of a caulk around the perimeter again supplied by the roofing mfg.
The trex boards were avalible as an off brand that was no longer being stocked by the local lumber yard and avalible at half price. they are a dark brown color with nice wood grain effect before i painted with rustoleum gloss black. will find out how long they hold paint for sure, but was not to concerned as to scuffing from ocasional walking as it would only expose the brown surface.
The Roof job violated some of the manufactures rules. they advocate the use of terminator strips to tie down all the edges, which do not look right on a historic car. the smoke jack penitration is probally another. i took great care to apply thick beads of sealant any where there was a concern, heck even the end laders penitrate the rubber roof. I have seen a few caboose roofs done by the "profesionals" and they did not look right, for one thing they tipically add 1" thick polystyrene insulation to the roof surface to use as a rubber aplication surface. this followed by the terminator bars just make for an ugly roof.
RCD's car is 4015 at the Sheburne Falls Ma. trolly museum, and there are many others.
Al P.
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