Merchant & Evans Manufactures ZIPRIB Structural/Functional Standing Seam Metal Roofing Used in Curved, Low Slope, And Steep Slope Applications As Well As Architectural Standing Seam Metal Roofing. Merchant & Evans Also Manufactures A Full Line of Customform Cornices, Domed and Barrel Vault Roofing Systems, Mansards, Fascias, Soffits, And Curved Copings.