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extream frost in the attic with new roof

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April 1, 2015 at 10:41 p.m.

TomB

It's a regional thing - I guess.

We work both west & east of CD. In the west, attic ventilation is taken seriously and is a definitive design issue, by architects/designers & HVAC professionals.....Not-so-much east of the CD.

April 1, 2015 at 6:17 p.m.

natty

TomB Said:
Just remember; Once you offer advice/design, youve bought it, so-to-speak....It sets up a well-intended roofer for possible litigation down the road.

That sure is an interesting issue. On new construction, the onus is on the builder. I think some states may have lemon laws that protect consumers for the first few years. But on re-roof, the onus shifts to the property owner. As a roofer, I am responsible to install the roof in a workmanlike manner and must conform to acceptable trade practices. Anything else I may do is merely a suggestion. In fact, I rarely get paid enough to compensate me for all of the extra work I do.

As far as ventilation is concerned, I have not yet met an HVAC person who knows squat about attic ventilation. Maybe that "V" in their name has something to do with the interior of the building.

April 1, 2015 at 4:39 p.m.

TomB

HVAC - (Heating, Ventilation & Air Conditioning). It doesn't matter how it's orchestrated - Passive,forced, encouraged, etc.....It's on the designer, should an opportunistic individual exploit a moisture, mold, sickness/property damage issue that may arise out of improper ventilation.

April 1, 2015 at 11:54 a.m.

TomB

Here's another regional idiosyncrasy, where roofer's have taken-on what is actually an HVAC issue.

Just remember; Once you offer advice/design, you've "bought it", so-to-speak....It set's up a well-intended roofer for possible litigation down the road.

Attic venting issues are typical with re-roofs and we all want to help - Just be careful/definitive in your contract, as to what your providing.

April 1, 2015 at 7:53 a.m.

GSD

Not here to cause problems, but my house has continuous soffit vent, those old metal ridge vent and 2- 24"x24" gable vents and all bath vents, vent outside and I have not venting problems. never had any ice problems, frost problems, etc.

March 31, 2015 at 5:58 p.m.

natty

twill59 Said:
Just did a big wide church addition 2 years ago. LOTS of Cubic feet up there. 12 soffits and..........Center Vent!

twill, what are you calling a center vent? Do you have picture?

March 31, 2015 at 5:42 p.m.

natty

Homebuilders Said: VentSure Rigid Roll 20 is the ridge vent.

This vent is not good. It is designed for go and blow production roofers and can be gunned down. Baffled ridge vents are the only way to go.

And do what old school says.

March 31, 2015 at 3:48 p.m.

Homebuilders

Here is just a little more information VentSure Rigid Roll 20' is the ridge vent. The top is open about 2 inches on each side. Each bath vent is vented out the gable end to the outside not inside at all. The soffit vents are in all of the openings that will accept a stryo chute in them. getting some great information that you so much for taking the time to help.

Chris

March 31, 2015 at 3:05 p.m.

natty

Old School Said: Install an AirVent II ridge vent on the peak, and make sure that the opening on the peak is at least 1 1/2 inches wide, the whole length.

He said he used OC vent ridge. Why is anyone buying that junk? It is less than 1/2" thick, so I suppose it is barely noticeable, but there is virtually no air flow.

And it can't be stressed enough. The opening must be cut and trimmed properly. I can't believe how many times I have seen ridge vents with little or no openings.