Blueprint for Roofing - Iko

Hips and Ridges PART 13
Ridge cap shingles may be applied in a traditional “single” dimensional thickness and
appearance. To obtain a three-dimensional effect, (which is recommended, but not
required), apply hip and ridge shingles double thickness by stacking 2 pieces on top of one
another, the lower piece extending about 19 mm (¾") further than the top piece.
• Separate Hip & Ridge 12 shingles into thirds, using the perforation marks as a
guide.
• These shingles are designed for a 130 mm (5 ⅛") exposure. (For a neater
appearance, the top of each side of each piece can be trimmed on a 25 mm (1")
taper.)
• Bend each piece over the hip or ridge, and nail 130 mm (5 ⅛") above the butt edge,
25 mm (1") in from each edge, exposing each piece 130 mm (5 ⅛").
• Apply hip pieces starting at the lower end of the hip, working up toward the ridge.
On hip roofs, apply ridge pieces starting at each end, meeting in the middle. On
gable roofs, apply ridge pieces starting at the end opposite to the prevailing wind
direction and continue to the other end.
The final shingle should be set in cement, and the exposed nail heads of the final shingle
should be covered with cement.
Ultra HP Hip & Ridge shingles are specially constructed ridge cap shingles designed to
provide a high-quality, high-profile alternative to using cut-up shingles to protect this
important area.
Apply the shingles with an 210 mm (8 ¼") exposure (even with notch), beginning at the
bottom of the hip, or from the end of the ridge opposite the direction of the prevailing
winds. Form the shingle to the roof deck prior to nailing. For steeper roofs, it may be
necessary to push down slightly on the sides of the shingle. Use two nails, one on each side
of the shingle, located 19 mm (¾") back from the shingle notch. In high wind areas, seal
down each IKO UltraHP shingle with two 25 mm (1") spots of asphalt plastic cement. For
added roof definition, IKO UltraHP may also be installed at gable and rake edges.
Several manufacturers now supply specialized ridge vents. To use these vents, install shingle
courses up the roof to the ridge so that the ridge caps will cover the sealing strip on both
faces of the roof at the ridge.
Cut away the roof decking to reveal the appropriate space based on vent manufacturer’s
specifications. At both ends of the ridge, apply ridge caps as already outlined, to cover
at least 300 mm (12") of the ridge. Center the ridge vent over the ridge, and overlap the
installed ridge caps so that the nails and sealing strip are covered. Nail to the deck using the
nailing marks supplied by the vent manufacturer. Nails should be a minimum of 50 mm (2")
to ensure penetration through vent, shingle and into roof deck.
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