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Question DetailsAsked on 6/30/2015

Would I need a snow country ridge vent on a porch roof? We are getting estimates to replace our porch roof

Is a ridge cap necessary on a porch roof

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2 Answers


Not unless you are planning on enclosing it and building a small camp fire to keep the restless natives happy.


*just kidding

Answered 5 years ago by jccasper


If it has a ridge, then is a good idea to reduce ice damming and eave icicle formation potential, because it IS going to get some heat up under it - from solar heating of that side of the house on the siding underneath and the roof surfaces, from heat loss from walls and windows and doors rising under it, etc.

If a shed-type roof (flat and low-slope, continues existing roof slope) then generally no because of the risk of water backing up through it from snow melt and rain on snow - better to try to vent laterally out the sides from underneath if possible - many ways to do that. If it is lower than the existing roof, so runs up against a wall under the existing roof eaves, then you have to be very careful how you vent it, because while venting is good, you generally do not want that warmer air venting to go straight into the overlying roof's eaves.

Answered 4 years ago by LCD

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