SmartVent Eave Application

The ideal choice for intake ventilation when under eave intake is not allowed by county and state regulations or when soffits do not exist. The eave application is the first pioneered and most popular application of SmartVent.

Our patented design has revolutionized the roofing industry with regards to attic ventilation.

CLick here to download the SmartVent Eave installation instructions
Installation Instructions


(Ensure metal drip edge was previously installed.)

Begin by cutting a slit 1” wide (or a series of 1 ¾” holes at 3” on center) into the roof decking 6” to 7” up from the drip edge. Do not cut slit within 12” of any side end or valley/wall intersection.
Be careful not to cut through the rafters!

NOTE: Ensure insulation is not blocking the flow of air extending from the soffit to the roof ridge. Ridge vents or other exhaust vents are required


Place the fabric piece half way on the roof rake side edge(Gable) and even along the bottom of the drip edge. Half of the fabric piece is hanging over the rake side(Gable) edge of the roof.)

Nail the fabric piece(s) in place with two(2) roofing nails, one high and one low..


Lay the 3’(three foot) piece of SmartVent even with the drip edge and at the roof rake drip edges(Gable).  Nail the SmartVent to the roof decking at the top edge with (4) nails spaced evenly from one end to the other.   Nail the bottom of the SmartVent with (4) nails spaced evenly along the “nail line” and matching the nails at the top of the SmartVent.  Each 3’(three foot) section of SmartVent requires a total of (8) nails.  Nails should be a minimum of 1 ½”, enough to penetrate through the roof decking. Start nails 2" in from each end of each SmartVent piece.
Wrap the End Fabric tightly so it covers the outer edge of the SmartVent and nail in place.


Continue installing SmartVent until the last piece. Repeat STEPS 2 & 3 before laying the final SmartVent piece. The roof rake side edge (Gable) SmartVent with wrapped fabric allows for additional air flow. Do not make any modifications to this detail without written permission from DCI Products.


Install ice and water membrane "on top" of the SmartVent. Full width ice and water membrane (36") is required to be installed over the SmartVent in all environments.

Ensure the upper underlayments are lapped over the lower underlayments. Please call the DCI Technical department with any questions.


Shingle the roof as usual. Beginning with a starter course, always overhang shingles by at least 1/2". You now have proper intake ventilation to your attic.

Note: Secure starter course shingles to the roof deck at the ¾” lifted edge of the SmartVent with nails that penetrate through the roof sheathing. (Generally 1½” roofing nails are used on new roofs.) Shingles must overhang the SmartVent lifted edge 1/2" minimum to 1" maximum. Refer to shingle manufacturer application manual. Please call DCI Technical department with any questions.

NOTE: SmartVent can be installed under virtually any shingle course

using proper installation techniques. SmartVent should be installed on shingled roofs with a minimum of 4/12 pitch. There is no maximum slope limitation. Low slope roofs with less than 4/12 pitch can use FasciaVent by DCI for intake ventilation. Use of continuous ridge vents or other approved exhaust vents are required. No Moisture from household appliances, equipment orfixtures can be discharged into the attic area. Maximum rafter length is 22feet to maintain proper NFA(soffit to ridge). Longer rafters may require a mid roof installation of SmartVent.

Ventilation Questions?

Click here for SmartVent Specifications

Most houses with ridge vents do not have the proper soffit ventilation required because attic insulation blocks the soffit vents. SmartVent allows cooler air to enter under the shingle, through the 1" roof slit and out the ridge vent providing superior air flow and attic cooling.

Click here for an expanding list of SmartVent Dealers. If no dealer is located near you please give us a call at 1-800-622-4455 and we will be happy to locate a dealer for you.

DCI Products Inc 800-622-4455