Replies

1. 
   Mad_Dog | Feb 26, 2002 06:00pm | #1

   *
   I don't think it will work very well. I think you need better airflow at the soffit. that's why it's used on the ridge (where i'm not sold on it either) since it can passively allow warmer air to escape but not let air/water in.

   Another problem could be bugs, spider webs.

   But I'm not a building scientist. just opinionated?

   MD

1. 
   FredL | Feb 27, 2002 05:20am | #2

   *Dear Dustin,If you want to vent a roof, you could use that method. Or you could cut the top off the existing facia, install your filter, and hang some 8" galv drip edge wide to keep the slot open. Or you could drill the facia and pop in large button vents. Or you could cut mushroom vents into the shingles low on the roof. Or you could find some of these nutty things.But if you want to deal with a roof ice problem, you will need to do something else. Regards, Fred

1. 
   Gene_Leger_ | Feb 27, 2002 07:14pm | #3

   *Dustin. The venting system youwant is called ComboVent. It is a form of drip-edge vent but vastly superior to regular drip-edge vent, which you should avoid. Unfortunately, the phone numbers I have for the company are no good. GeneL.

1. 
   Gabe_Martel | Feb 27, 2002 08:33pm | #4

   *Funny how this question always attracts the "experts". They have the ability to complicate the lords prayer to the point of encouraging atheism.What you propose is one way of ventilating or you could install venting under the soffit, either continuous or installing round or square inserts at each bay.Gabe

1. 
   Gabe_Martel | Feb 27, 2002 11:44pm | #5

   *Just noticed the comment in your post title. NO OVERHANG.Question comes to mind. Why do you think you need ventilation in this particular case?Gabe

2. 
   Gene_Leger_ | Mar 01, 2002 10:51pm | #6

   *Gabe. Dustin's post heading is Venting w/ no overhang. If there is no overhand there are no soffits, n'est-ce pas? GeneL.

3. 
   Gabe_Martel | Mar 01, 2002 11:39pm | #7

   *Gene,"If there is no overhand there are no soffits, n'est-ce pas?"Look at my other correcting post before you jump to conclusions. I was too busy reading the question to read the thread title and didn't notice it until I posted the first time.BTW if you extend the fascia by adding blocking and a second face board, you now have a soffit.How's the book selling business?Gabe

4. 
   Dustin_ | Mar 02, 2002 06:30am | #8

   *Gentlemen, gentlemen... Settle please. Gabe, my client has ice problems at the base of the roof. I've dealt with many ice problems before and my best result seems to be ensuring airflow. In the entire scope of the job, I'll be stripping the roof, removing the lower 1-2 feet of plywood, inspecting &/or replacing insulation, and installing baffles. As I stated in the original post, the Sof-Edge was an effective design for this particular application, however, it's no longer available. My idea is to completely replicate the product but I will slightly create an overhang. Thanks for the input and keep it coming.

5. 
   Stephen_Hazlett | Mar 02, 2002 03:36pm | #9

   *Dustin,The product I generally use is Coravent.I have never had to use it in the situation you describe,but the capability of the product is there.My local Cora-a-vent rep sent me a great spiral bound manual for all possible applications.If you can't get ahold of one of these let me know and I can fax you copies of the relavent pages detailing the exact situation you describe and how to fit the product.

6. 
   Gene_Leger_ | Mar 03, 2002 11:32pm | #10

   *Gabe. Sorry, but I did not see your correcting post. Traditionaly, drip-edge vents, or as they are sometime called, starter vents, are used when there are no overhangs. My experience, however, says to stay away from these venrs...with onne exception: the ComboVent. The chapter on attic ventilation in my book goes into detail on the things that are wrong with most drip- edge vents. Of course one could fabricate soffits as you suggest. GeneL.