Cedar Shake Roof Installation
- 1). Install tarpaper over the entire roof surface with tacking nails. Tarpaper provides a water repellent layer under the shingles.
- 2). Place the first row of shingles along the bottom edge of the roof. Orient the shingles such that the thickest edge of the shingle is closest to the edge of the roof. Extend the bottom of the shingle 1 1/2 inches past the edge of the roof and fascia. It should hang over the fascia. Install vent and chimney flashing as you would any other type of roof. On roof designs using cedar shakes, open valleys are used for direction changes in the roof profile. The edges of the flashing extends approximately 15 inches beyond the center of the valley.
- 3). Nail each shake with two roofing nails placed four inches up from the thick part of the shingle and one inch in from each edge.
- 4). Place each subsequent shingle in a given row leaving a gap between the two shingles of one-quarter to one-half inch. This spacing allows for the natural swelling of the cedar when it becomes wet from rain.
- 5). Trim the final shingle of each row. The edges of the roof should be even. Trim each shingle at the end of the rows to end at the same point.
- 6). Install the rows of shingles from the bottom of the roof towards the top.
- 7). Use a chalk line to mark the placement of each subsequent row of shingles after the first row has been nailed down. Orient the chalk line to lie on top of the last row of shingles installed. Mark the row of shingles approximately 4 inches below the line of nails used to hold the previous row of shingles. The bottom edge of the next row of shingles will align with the chalk line. Continue this process up the roof to the peak.
- 8). Overlap the gap between two shingles of a lower row with the center of the shingle in the row above it. This will generate an alternating pattern of shingles.
- 9). Work your way up the roof in this fashion until you reach the peak.
Place flashing along the peak before placing the final rows of shingles. This will protect the peak from the weather and water.
Place the final row of shingles on each side of the peak. Trim the shingles so that they fit the shape of the roof's peak.