Green PVC Roof with Ribs Mimics the Look of a Metal Roof – Walker, MI Written by dewardknapp on March 20, 2019. Posted in New Roof. Walker Armory – Walker, MI The Walker, Michigan Armory during the installation of a PVC roof with ribs, retrofit of a metal roof.Technicians prepare the surface of the Walker Armory, installing Dens Deck recovery board.Technicians finishing the preparation of the insulating panels in the foreground. In the background, other technicians install the new PVC roof with ribs.Technicians apply adhesive to the prepared surface of the roof.Roof technicians prepare the roof ridgeline.The PVC roof with ridges emulates the look of a standing seam steel roof.Two stages of the roof project can be seen – the workers preparing one zone and adhering the PVC membrane.The PVC roof membrane has been adhered, the roof exhaust vents have been flashed into the roof.The standing seam ribs are then hot air welded onto the PVC RoofThe completed PVC roof mimics a standing seam metal roof at the Walker, Michigan Armory.Another view of the completed roof at the Walker Armory.Workers continue installation of the ridge line of the low slope roof at the Walker Armory.Completed installation using green Sika Sarnafil PVC roof.