What is the net free area of this vent in inches?
Thank you for your question on the Broan 636 roof Cap. I understand Technical support answered your question over the phone. If you have further questions please contact our Technical Support directly at 800-637-1453.
Date published: 2017-04-17
We install these roof vents in our new construction properties. We have had several complaints about water leaking during storms. Could you please give me an explanation for this that I can pass onto our homeowners? It is my understanding that when we get sideways wind and rain, it is possible for that moisture to get into the roof vent and leak down into the home.
Thank you for your question on the model 636 roof cap. Yes, it is possible during strong storms or very windy days that rain can be blown into the roof or wall cap. If this unit has a back draft damper it would definitely help but weather is something that cannot be controlled, so it may not completely stop this from happening. If your customers are experiencing water leaking from the grille of their ventilation fan, this is normally due to cold duct work, improper installation, or a problem with the seal on a wall or roof vent. Insulated duct work can help solve the condensation problems and running the fan longer will ensure moisture is completely removed from the duct. Ductwork should slope down toward a wall vent to direct condensation out the exterior vent opening rather than back into the housing. For further questions, please contact Technical directly at 800-637-1453.
Date published: 2016-02-10
How does the duct hose connect to the roof cap?
I am using a flexible insulated air duct to connect the fan to the roof cap. Is there a 4 inch diameter neck on the bottom side of the 636 roof cap for the ducting to slip over and be secured to the unit? If so, how long is the neck? If there is only a hole with no neck, what sort of adapter would you recommend?
Thank you for your question on the model 636 roof cap. The duct work does not actually attach to the 636 roof cap. The duct gets installed so that there is ¾” above the roofing material and the roof cap gets installed over the top of it. You can go to our web site and download a copy of the installation instructions.
Date published: 2014-07-21