- 1). Measure the size of the roof to figure out how much roofing will be needed. Multiply the length by the width to get square footage and purchase the materials at your local Pro-Panel supplier. Many hardware stores will carry this material or it can be special ordered.
- 2). Lay out felt paper over the entire roof and attach it with a nail gun so it covers the entire roof. Overlap the felt paper two inches. Attach 1-by-4 furring strips with screws over the felt every 24 inches on center. These strips will run vertically for drainage. They will also prevent nails from coming through the roof and into the ceiling. Run a second set of furring strips horizontally on top of the vertical strips, also 24 inches on center. The panels will be installed over these.
- 3). Attach eave flashing with nails along the bottom edge of the roof. Run the flashing horizontally and then attach foam strips over the eave flashing horizontally along the top. Apply a piece of butyl tape to the top of the strips to properly attach them. This will fill and seal gaps between the panels and the flashing.
- 4). Line up the first metal panel so it is at the bottom corner of the roof and overhanging the eave about 3/4 inch. Attach it to the wood furring strips through the ridge of the panel with self-tapping wood screws. Drive screws into the furring strip every three inches. Place the next panel on the roof and overlap the high ridges. Attach the panels together with metal screws every 12 inches for the full length of the overlapping ridges. Continue this process until the entire roof is covered. If necessary cut the panels with metal shears to fit around the edges.
- 5). Install the ridge cap on top of the roof. Lay it across the top and install it by driving metal screws into each panel until it is secure. Inspect the roof and remove any loose debris.
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