A. Cap seal material
B. Venting material
C. 9" end cap flap
Fold the 9" flap under the starting edge. Press Mongoose Ridge Vent to the roof, the glue will hold Mongoose Ridge Vent to the roof shingles.
Roll out Mongoose Ridge Vent along ridge line of roof. Press Mongoose Ridge Vent to the roof so that the glue strips adhere to the roof shingles.
When finished applying Mongoose Ridge Vent, use the extra 9" cap seal material to create an end cap by folding the 9" flap under the vent material. (Mongoose Ridge Vent has 9" of extra material on both ends, it is important to tuck the extra 9" under both ends of the ridge – this creates end caps). Press Mongoose Ridge Vent to the roof, the glue will hold Mongoose Ridge Vent to the roof shingles.
Mongoose Ridge Vent is designed to be used with different widths of ridge caps. If your ridge cap is smaller than total width of Mongoose (11"), trim excess cap seal on both sides of the ridge cap shingles.
When the ridge length is greater than 20' or you are using leftovers from a previous job, you must create a joint to continue the vent. To join two pieces together, one piece must have a 9" flap and the other must be flush. Butt the four vent strips together and secure with caulk. Lap the 9" cap seal material over the joint using a bead of caulk under the lap to create a water-tight seal.
Install your ridge cap shingles according to shingle manufacturer’s instructions. Remember to leave a 5/8" gap between the roof shingles and the capshingle. When using a nail gun you should reduce the nail pressure so that you do not drive the nail home.