Can The Edge Vent be installed on roofs with vented nail base?
When using The Edge Vent with vented nail base products, there are a few things to consider:
Is there an attic space below the vented nail base which is desired to be vented? If so, is there independent intake ventilation for the attic or would The Edge be relied on to supply ventilation to both the attic and the vented nail base? If The Edge Vent is to supply intake to both, then the slot would have to be cut through the vented nail base and any other layers that may exist below in order to accomplish intake ventilation for the attic. If there is a compact (cathedral ceiling) roof application, see number 2 below.
If it is cathedral ceiling construction with vented nail base over a compact roof system, then it may be possible to cut the slot into the top surface of the vented nail base. WARNING: The manufacturer of the specific vented nail base needs to be consulted regarding the structural integrity of a continuous slot being cut in the top surface of their product. They may require that the slot not be continuous, but interrupted, to maintain the structure integrity.
Use a vented nail base that has a minimum of 1 ½” air space to allow the incoming intake air from The Edge Vent to safely travel to the exhaust vent. There are brands of vented nail base with less than 1 ½” air space but Air Vent recommends a minimum of 1 ½”.