I'm beginning a garage mod to raise the ceiling by adding a structural ridge beam (so to get rid of rafter ties). Eventually, I will need to remove the PCV gable end cladding to secure the exterior plywood to PSL column going from gable end top plate to the beam. It appears to be trying to simulate T & G with the boards around 5" wide. It isn't obvious how to disassemble this stuff (without ruining it). Any ideas? I'm really not sure how old it is. I'm guessing at least 20 years. I've searched around on-line and don't see anything quite the same, so if I damage it, I'll most likely have to replace it all... 






