DCI Products SmartVent - Manual (Page 7)

Rev20120901
SmartVent Installation Procedure for a ‘Continuously Ventilated Valley’ Application:
1. First strike a chalk line at 6½” away from the centerline of the valley on each side of the roof deck.
2. Then drill 1 ¾” holes at 3” on center along the chalk lines( or 15” wafer cuts at 6” intervals at 6” to 7” in from
the centerline). Do not drill through any rafters. Call DCI Products at 1-800-622-4455 if you have any
questions on installation of SmartVent. Install 12” X 12” square piece of ice and water membrane at the
bottom edge of the plywood roof deck where it meets the metal drip edge and fascia board before installing
the lower SmartVent piece and fabric.
3. Install one SmartVent with the smooth side up and the thick edge towards the valley. Install a second
SmartVent on the opposing side matching the thick edges together at the centerline. Install with eight nails,
four nails along the upper edge and four nails along the lower edge of each SmartVent piece.
4. Cut and/or miter the SmartVent with a razor knife at the bottom and the top of the valley to conform to the
ridge and the fascia. Wrap the enclosed fabric on any exposed edges of SmartVent when installing.
5. Install your choice of valley protective membrane over top of the SmartVent (Do Not Wrap the Bottom
Exposed Edge Where the Fabric was Wrapped). Continue your roof shingling per manufacturer’s directions.
The pictures shown above have SmartVent installed at both the eave and in the valley. If soffits exist
with vents underneath, cut the lower SmartVent valley product at the lower metal roof edge corner
and install the enclosed fabric around the exposed edges before laying the first piece down.