john J
1/20/2012
The Expert Panel is awesome! I have another question regarding vent. My house has a U shape. The bottom of U is the highest roof point with a ridge length about 8ft. The 2 sides of U are lower and have ridges 12 & 15ft. I see one small vent on the 15ft lower ridge on my shingle roof. The house has regular vent openings under the gutter (soffit?). I am thinking about ridge vent with a new metal roof (seal the existing vent). The house floor is just under 2000sf. I read that the vent should be on the highest ridge. But my ridge is only 8ft. I do not think that's enough, and was wondering if I can install ridge vents on the other 2 lower ridges as well (ie install ridge vent on all 3 ridges).
Todd Miller
Classic Products, Inc.
1/20/2012
You should vent all ridges and also make sure that all of your soffits have intake vents. Thank you for your kind words.
Info @windowsonwashington.net
An informed customer is our best customer.
1/20/2012
Yes, you can vent each ridge. Make sure you have the soffit/incoming air to go with it.
Guest User
3/24/2012
Can or should metal roof installer use the same boots for the new roof that are already in place for the shingle roof? Also, what is the specification for amount of screws and distance apart to secure the roof?
Todd Miller
Classic Products, Inc.
3/24/2012
I would never suggest re-using existing pipe flashings / boots. Fastener spacing and type is based upon the product being installed and will be available through the individual manufacturers.
Info @windowsonwashington.net
An informed customer is our best customer.
3/25/2012
+1 to Todd's feedback. If you roofer is going to re-use old boots, I would run...not walk...away from that contractor.
Guest User
7/4/2013
I had turbine type attic vents on my shingle roof. The metal roof contractor removed them, overlayed the shingles with the insulation and then put down the wood strips and applied the metal roofing. When I asked about replacing the vents he said that they cut out the insulation over the existing vent holes and this allows the attic air to vent under the ridges of the metal roof. I have soffit vents and gable vents at both ends. Is this sufficient ventilation? Thanks.
Todd Miller
Classic Products, Inc.
7/4/2013
I am not keen on this but let me ask you something ... is there a ridge vent in the roof?
Guest User
7/5/2013
No ridge vent, just the cap. My neighbor's house is the same design and I've seen other homes in the area with no ridge or visible vents. The contractor swears this is the way it's done when there's soffit vents and gable vents at both ends.
Todd Miller
Classic Products, Inc.
7/5/2013
Hmmmm .... a great source of venting info is at www.airvent.com. Maybe it is done this way on occasion but it's not the best way to vent by any means.
Info @windowsonwashington.net
An informed customer is our best customer.
7/7/2013
+1 You need to have intake if you are going to have exhaust. What going out must = what is going out. If not, you are pulling that air from the home and exacerbating the very issue you are trying to eliminate.
Guest User
7/26/2013
Must I remove the pervious asphalt shingle from the roof before I install the metal roof shingles?mbs
Todd Miller
Classic Products, Inc.
7/26/2013
Mr. Bill, the low weight and design of most metal shingles encourage their installation over existing shingles.

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