Why Vent An Attic: How Attic Ventilation Protects Your Roof

Here's how to avoid some common attic ventilation mistakes. Did you know that attic ventilation protects your roof and extends its life by up to 100%? But if your attic doesn't have the correct ventilation or a bad ventilation system, it can cause your shingles to fail prematurely.
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00:00 Introduction
00:57 2 Problems in attics
01:35 Lomanco convection display
02:11 How intake and exhaust vents work
02:28 What is a soffit vent?
03:02 The affect exhaust vents have on your attic
05:48 A really bad vent filter
07:07 The WORST vent filter
07:58 Blocking the soffit vents
#atticventilation #lomancovents #roofinginstallation

[@user-eb2ul2yp5i]

very informative video. they showed which filters NOT to use, but did not mention which ones are OK use - likely need some filter!?

[@homesteadroofing]

The video is about the Lomanco vents.

[@robertkerr229]

Here in Florida also, my soffit vents are covered with insulation. I wouldn't have considered this without this video and the statement at the end.

[@slydog7131]

Excellent video. THANK YOU! A roofing company wants to install Cobra intake vents which is a mesh vent. I think it is a terrible idea. Airflow is reduced by 80% when new, and as those vents accumulate dust and dirt, airflow will drop even further. Maybe I'll suggest that they watch this video.

[@robertlouer4050]

Enjoyed the video! I am used to ridge vents, but here in Florida they tend to use a different venting system.

[@homesteadroofing]

What do they use there?

[@squidikka]

Thanks for the video. For a tiny home with 300sqft of attic, I calculated that I need 144sqin between the exhaust and intake, or 72sqin ea of intake and exhaust. However, I noticed that I have no soffits and am unable to make my own, so am forced to go for a gable. Being in North Texas, would a gable and whirlybird be the ideal combination? Or would a whirlybird create negative pressure in such a small space? I want to avoid ridge vents if possible and go with a static vent if needed.

[@victorsr6708]

As an a HVAC contractor I see this all the time! I like to install whole house fans but their is nowhere for the air to go so I don’t even bother to recommend one

[@skip741x3]

looks like the % data coming thru is based simply on the rpm spin of the fan and not true CFM thru the openings.. example, the ridge vent filter, certainly there is some flow happening when a fan and its speed isnt a factor

[@EdNeedsAMiracle]

Did I miss something whats the best ventilation system for my house and best ridge vent system? I have a ranch home

[@homesteadroofing]

Sorry about that and good catch! We filmed that intro for the video and then filmed for about 2 1/2 hours! We got a lot of content and so the answers to your questions will appear in the next 2 videos in this series. But... the Lomanco ridge vent doesn't have the filter or baffle, and it's designed to actually produce airflow and vent your attic. Hope this helps.

[@slatebaker1423]

People ask me all the time what kind of vent is best. My answer us that static vents like our 750 work great when there are enough of them and when there is adequate intake. Ridge Vent, turbine vents, and power vents don't just really on convection. A ridge vent with external baffles actively draws air out of the attic. There will be more on that in upcoming videos.

[@gen-X-trader]

So, I didn't catch it but basically do lamanco products flow as stated. If it says 50, you get 50 sqin for example? The lamanco 550 pro exhaust vent seems to be heavily used. Second is there any harm in going slightly over 60% on the intake 65% etc. it seems like if anything you're preventing cobwebs and whatnot from dropping as the years go on. I've heard it said you cannot have too much intake ventilation provided it's evenly distributed around the house? Agree?

[@homesteadroofing]

If you're going to err, err on the side of intake.

[@michaellinde8529]

Very informative video however it was very confusing that he was using the intake filters on the discharge side at the fan? Unless you fully understood what he was doing it was misleading in a way. He should have been putting the different filters on the lower intake.

[@homesteadroofing]

But the screens, baffles, and filters are on the exhaust vents, not the intake vents (though some have screens)

[@ProudVet-Russ]

what do yall think about sealing the roof entirely instead of venting? i understand the reason behind venting but how does that stack up against just heavily insulating and sealing the roof and then just let the hvac cool not only the "living space" but also the attic itself. i would say if you don't have insulation on the roof itself and or only on the floor of the attic venting is the only option to reduce the heat buildup and transfer to the live area and even the roof tiles themselves, but if you have 6-8inches of insulation on the roof and turn that attic into a storage space/loft then ventilation is just blowing your cooled air out into the open for no purpose (or at least as far as i can tell). leme know if i'm totally off base or if i'm understanding the mechanics well behind this. ps: which would be more energy efficient in the long run. i'm confident the heavy insulation of the roof would be more costly but your getting a cooled loft/storage area outa it, just not sure if it would actually be cheaper on the heating/cooling bills than just trying to blow the hot air out of there with an energy free passive blower system.

[@homesteadroofing]

I've checked into the closed cell insulation a little bit and I like that idea so far

[@ProudVet-Russ]

@@homesteadroofing ty for your feedback sir. Since getting out ive been trying to educate myself on everything I'd need to know to build a home. Its been a long process and I still don't feel ready.

[@stratoleft]

As far as I'm concerned, your ENTIRE ridge venting concept is completely USELESS. So, you build the roof up the the apex, but not quite? Then, you have to worry if it's all even and junk, and how much it's "raised", if you wanna call it that, above this long gap you got in the top of the roof. Sorry, but this joke of an "engineering' concept is not only useless, but needless work to maintain. Your ridge venting can't possibly, on your best day, evacuate the stifling hot air where I live out of the roof like a convection fan tube or any rotating electric or naturally rotating ventilation. Period. I'll call the collective bluffs against ANY of you so-called experts, "engineers", or whoever you are.

[@homesteadroofing]

You seem upset.