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Question DetailsAsked on 2/20/2017

Can ridge vent be installed on the upper half of a hip in a hip roof and if not, why not? Think about it!

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2 Answers

0
Votes

You sound dubious - assuming yours is a conventional hip roof, sure - why not - done all the time. Generally, the lower section might not be done - or sometimes for aesthetics is actually provided with ridge vents but without any roofing removal underneath (and not connected to the working vent strips), but ridge vents in the upper portion of a gabled roof work just like a normal ridge vent - just not as effective because not all the ridge vent is at the high point.


Sometimes for this type house the ridge vents are combined with a ventilation cupola at the "peak" if your house has little or no flat-lying ridge at the peak.


Here are links to a few previous similar/related questions FYI:


https://answers.angieslist.com/gaf-co...


https://answers.angieslist.com/I-6-op...


https://answers.angieslist.com/Ridge-...


https://answers.angieslist.com/Hi-I-r...


https://answers.angieslist.com/Roof-R...

Answered 3 years ago by LCD

0
Votes

Hip venting requires special hip designed venting products. Although 'hip' vents look like regular 'ridge' venting products (either rolled or in stick sections), the hip vents products have special built in seals to prevent water intrusion along the cut out sections of the sheeting on the hip slopes to seal against rain runoff. Or the installation of 'hip' vents might require more caulking to ensure a good weather seal.


On the other hand, 'hip' venting products can be used on the 'ridge' in place of regular ridge products since adding the 'hip' seal is overkill for ridge line venting.


Then manufactures only want half the hip run vented (do not slot sections of the hip all the way down to the eave), even though for appearance sake it is suggested to install the hip venting product on the entire hip run for uniformity.


The answer to your question about using required 'hip' vent products in the upper half section of the hip run is a must but switching to 'ridge' venting products on the lower half or remaining hip run where no sheeting cutouts are used should probably work and look just fine as long as you paper, cap or seal the hidden but exposed seam of the hip line shingle join even though the hip or ridge venting product will be covering over that hidden seam. Or maybe just end the hip venting product and transition to regular shingle caps for the remaining hip run to the eave.


Manufacture is going to want its hip vent product used on all the hip run (peak to eave) and maybe void their warranty if you don't but you can save a couple bucks by using 'ridge' vent where you don't absolutely need a 'hip' venting product to seal any hip slope cutouts in the upper section of the hip run.


There again, you could only 'hip' vent the first 4' or so from the peak down then no further regardless of how long the hip run is, at least you would be venting the heat trapped in the upper hip section esp. if your regular ridge venting did not allow good air flow for that section of the upper attic hip airspace.



Answered 7 months ago by razzz




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