Replies

1. 
   nathan_w | Sep 18, 2000 04:02am | #1

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   Bruce,

   I know of a metal fascia vent that acts threefold.

   Provides flashing at the sheathing edge.
   Creates a drip edge into the gutter.
   Has a continuous vent strip at the bottom

   The roof sheathing is held back from the end of the rafter to create air flow. The vent strip itself sits nearly even with the top of the gutter, and stands off the fascia three or four inches. Can't give you any details on maker or trade name for the product.

   You would hang the starter strip and first course of roofing proud of the edge like normal sheathing, only now the edge you're finishing to is a metal piece with venting at the bottom.

2. 
   Guest_ | Sep 18, 2000 03:01pm | #2

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   Bruce.. sounds like your client is uninformed...

   there's a lot of nice looking products out there that will go well in the soffit..

   if you do what you described.. look up Benjamin Obdykes shingle breather..and RollVent.. athey show some details for the application you're describing..get the net free numbers from them...
   compare them to the requirements listed by your ridgevent mfr. so you get balanced flow...

   soffit in = ridge out

1. 
   Guest_ | Sep 18, 2000 06:51pm | #3

   *Sounds like a drip-edge vent. I would be leery of drip edge vents: the net free venting area (NFVA) with most of them is dangerously close (4 square inches) to causing the ridge vent to reverse. One of the giants of residential construction regularly installed drip-edge vents. But field reports form Minnesota, Toledo, Ohio, Buffalo, New York and other areas of the snow belt, told of snow entering the vent and penetrating 6 to 8 feet inot the attic space.Many reports from builders tell of the drip-edge not keeping water off the siding. Other builders report of damaging the vent when ladders were placed against them. Ventilating hips on hip roofs is iffy. With low pitches it might work. Best to use a vent without anexternal baffle as it provides a channel for rain water. witho*ut soffit vents the ridge vent will not work, because they must be driven by soffit vents. GeneL.

1. 
   Guest_ | Sep 23, 2000 05:18pm | #4

   *Mike, thanks for the info on Roll-Vent, I don't like it for ridge vent, too soft, but my supplier carries it. Also, I agree with Gene on the drip-edge vents. Because icing starts at the gutter, I don't trust them here in the northeast. Thanks !!

1. 
   Guest_ | Sep 23, 2000 08:35pm | #5

   *Bruce,The fascia vent issue asside, I think that roof ice problems are more effectively attacked by adequate insulation and air sealing. How old is this house? Is it balloon framed by any chance?Steve

3. 
   Bruce_Siuta | Sep 23, 2000 08:35pm | #6

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   I am in the process of bidding a roofing project for next year.5/12 pitch, hip roof, 24" soffits, 6" facia boards. No existing ventilation system, bad icing problems last winter. I plan on tearing off the existing roof, replacing any bad sheathing, installing two rows, (6'), Ice and water shield at the eaves, and venting the hips and short ridge with Ridgemaster shingle-over vent.For eaves venting I would have liked to install a continuous strip vent in the soffit, but the client does not want any venting in the soffit area.Vented soffit panels are also out. Since I,m going to replace the gutters, I thought I would remove the existing facia boards, install air chutes, cut the facia boards 1-1/2"from the top, re-install them, add 4" of roll-type ridge vent on top of the boards, and screw in another 1x6 facia board. Any thoughts on this ? Any reason it won't work ? Would the venting be adequate? Replies, please !