The photos below are a job we did in Beverly in May 2014. The fir porch flooring and pine trim were quite rotted and would not hold paint. We replaced the tongue and groove floor with 5/4 PVC decking, and the pine trim was replaced by pvc trimboards. The new scotia moldng is also PVC. Hidden clips hold the slotted deck boards in place, and color-coded deck screws are used for the leading edges and "picture frame" edging.
Gordon Harris 