Oakridge Architectural shingles are made by Owens Corning. They come in almost every popular color, 12 total, and have a 30-year limited warranty with a 70-MPH limited wind resistance warranty. These shingles, like many others, also have an algae resistance limited warranty. They are laminated shingles whose actual size is 13 1/4" x 39 3/8" with 5 5/8" exposure. Three bundles will cover 98.4 square feet. Installing these shingles is very similar to installation of most other 30-year shingles on the market today.
Measure the size of the roof to determine how many bundles of shingles will be needed. Multiply the length by the width to get the square footage. Each bundle of Oakridge shingles covers about 33 square feet.
Lay the felt paper out over the entire area of the roof and nail it down so it is secured to the plywood or OSB that is underneath. Snap chalk lines beginning 13 1/4" from the bottom of the roof. Make a line across the roof at this spot and then move up 5 5/8" and make another line. Continue this process until reaching the top of the roof. This will mark where the shingles will be nailed in.
Place the starter shingles in the bottom left corner of the roof and continue along the entire bottom edge of the roof. Fasten down with five nails for each shingle, spacing them every 2 to 3 inches. Apply the first shingle just above the starter strip with a nail every 2 to 3 inches. Cut off 6 1/2" from the second shingle and apply the rest just above the first shingle. Cut off 13" from the third shingle and apply the remaining piece above the second shingle. Cut off 19 1/2" from the fourth shingle and nail it in above the third shingle. Cut off 26" from the fifth shingle and apply it above the fourth shingle. Cut 32 1/2" from the sixth shingle and nail it above the fifth shingle. Repeat this process throughout the entire roof.
Install 10" x 7" metal roof flashing where the shingles butt up against the side-walls of the house or against chimneys. Nail the flashing to the roof over the shingles.
Install the hip and ridge shingles at the top of the roof. Fold theses shingles over the top of the roof and nail them down like regular shingles. Overlap them so there is 8" exposure with each shingle and continue down the entire length of the roof.