Composite decking for stringers/gunwales

[NY_Rocking_Chairs]

Greetings,

 

Kiddo #2 wants to build a tadpole so we are currently lofting the frames and starting to gather materials.  A call to my local lumber supplier shows a lack of WRC.

 

Aside from the weight, which based on the dimensions, will add ~4 lbs over WRC, any reason to not use composite decking for the strings/gunwales? 

 

[andy00]

I don't know the particulars, but composites are typically less stiff than wood. They don't have the long fibers of wood. You might have to increase the scantlings. On a boat as small as the tadpole, it might be OK. But you can use other woods in place of WRC, e.g., other cedars, pine, or spruce.