How Does Proper Attic Ventilation Protect my Roof?

Рет қаралды 417,486

6 жыл бұрын

Every home has a roof, but is every roof properly ventilated to prevent premature roof deterioration or roofing system failure? Learn about the benefits proper attic ventilation provides your home, and when it may be time to call a roofing professional.

Пікірлер: 90

@lolaumarova 2 жыл бұрын

*Well-made, delivered quickly, and easy to install with **Fastly.Cool** . I may be imagining it, but it seems quieter than the 14 year-old unit that I pulled out. Of course it was noisy at the end due to failed bearings, so hard to compare.*

@raaefelmaalawi4638 10 ай бұрын

So far, so good! I installed this fan yesterday. kzfaq.infoUgkx7yWIKcrbA9KMHkGSfcgxW2lsjHT6B8Sh I've been watching a continuous radon monitor in my house for about a week, and the levels have been running between 4.5 and 7.9 pCi/L. Shortly after I installed this fan, the radon level started dropping, and in less than 24 hours since I installed it, the level is now 1.9. My basement is approximately 2,000 square feet. Total home square footage above basement is approximately 4,000 square feet. The noise level so far is very quiet. Mine is installed indoors, so I had to purchase a cord and connector. If I have any problems later, I'll update my review. But for now, I'm very pleased with it.Update after 48 hours: Using a constant monitor, my radon is now fluctuating between 0.38 and 0.45 pCi/L. I've moved the monitor to my basement and am getting a constant 0.43 reading. After 24 hours, and when I know the weather will be safe, I'll place the monitor outside for about 12 hours. I'm thinking that the 0.38 to 0.45 may be the outside "ambient" radon level. I'm using this monitor (purchased from Amazon): Corentium Home Radon Detector by Airthings 223

@NashPotatoesOutdoorShow 5 ай бұрын

Great video, thanks for the help!!

@zacharyharris1393 5 жыл бұрын

A very important topic for homeowners. It helps them understand why their gutters are covered with ice and how attic ventilation can improve their roofing system.

@gen-X-trader Ай бұрын

learned this the hard way on my 1st roof. a leaky house and undervented attic = expansion / contraction and weird heat cycles / mildew. shingles baked in the summer and the deck swelled in the winter. tar strips failed. short version. caulk and seal your can lights. make sure you don't have gaps and leaks in the house and when in doubt it's not that much harder to run 150/1 rather than the more common 1/300. current code in my state actually just changed to 150/1 on all homes without a class 1 or 2 vapor barrier which is a lot of new construction.

@andrewjones1471 3 жыл бұрын

We don't have your weather here is Australia but the basic idea explained is very good. Shame about the negitive nellies. Keep up the good work thank you for putting the time in to create this video.

@maksymvasylevskyi3603 3 жыл бұрын

But you have the same temperature drop between outside and inside )))) The laws of physics apply equally to both Australia and the USA

@darwinjina 2 жыл бұрын

Ventilation fans are normal in western countries but have not seen them in tropical or sub-tropical climates. (for example, where it is always warm) Is this due to different building regulations or their efficiency is not seen near the equator?

@sergiomuller5988 4 жыл бұрын

Very nice topic...congratulations.

@hughlee7107 2 жыл бұрын

Talk about a great fucking video. Geez my mind is so satisfied

@nofurtherwest3474 5 ай бұрын

lol

@pratiknaikedu 2 ай бұрын

Hahah this was unnecessarily incredible

@Inkling777 11 ай бұрын

What do you think of the current "conditioned attic" claims of some who do attic insulation? They point to ventilation ductwork in an attic and claim the entire attic needs to be 'conditioned" almost as much as the house. The result is foam sprayed between the rafters to try to keep the heat from the shingles from getting into the attic. My response it that, deprived of the ability get rid of heat into the attic (and vented out) the shingles will get hotter and not last as long.

@crazysquirrel9425 21 күн бұрын

Note: you ALWAYS want more intake than exhaust ventilation. Otherwise, as time goes on, your vents will become clogged and little air flow results. Far easier to let heat out than to let enough cool air IN.

@user-rd7hn1ls4x 5 ай бұрын

Excellent video! Do you grant businesses permission to post this video on social media or a website? With the proper attributions/credit/Copywrites of course.

@user-rd7hn1ls4x 5 ай бұрын

Note: I am a home inspector.

@jackfarrell4727 3 ай бұрын

Proper ventilation keeps the roof surface from getting super heated and keeps the in side (attic, and or rafters) dry due to condensation.

@eustacemcgoodboy9702 18 күн бұрын

I don't think my house has any of this. Built 2009 in Northern Europe. Cold climate. I dunno. The attic is finished useable space and has 5 Velux windows and 2 doors leading to decks. Does seem to be condensation issues in winter with the Velux windows causing some frame rot. Roof is clay tiles. Attic is the coldest area in the house in the winter and the hottest area in the summer. The Velux windows are...shall we say, "not air tight."

@philipdamask2279 2 жыл бұрын

One of your diagrams shows the sheetrock suspended in space below the bottom chord of the truss. This is misleading.

@kathrynmoorhouse2084 Жыл бұрын

Hi I have a fairly steeply pitched roof and just replaced a shake roof with individual point vents, to an asphalt roof with single continuous ridge vent. Soffits are also present (clear) and remain unchanged. The attic space has two additional gable end vents near the apex and across from each other. Some insulation contractors are recommending leaving the gables vents open and some are saying we should block them off to ensure the ridge vent works correctly. Any thoughts which is right and does it matter winter vs summer.

@americafuckyea2789 Жыл бұрын

Ridge vent is more than enough coupled with vented soffit. Close off gable vents.

@richardpack4 10 ай бұрын

I have looked for 6months and can’t find a reason that makes sense to “vent” an attic or roof. All I see is points of entry for water to get in then you have bats, bugs, birds, etc…..And flushing my hot air out. And considering my family freezes me like a popsicle in the summer, I ain’t giving my hot air up. I know it’s “code” but that is just going to be sealed with new material or concrete after inspection.

@poshko41 Жыл бұрын

My shingle manufacturer wouldn't even give me the full warranty without having a ridge vent installed.

@danwells7691 5 жыл бұрын

if you live in moist climate moisture will flow into attic and rot wood

@cfldriven 4 жыл бұрын

Only if it condenses.

@CharlesBuell 2 жыл бұрын

There should not be ANY moisture and heat moving to the attic space from the interior. If there is, fix that. Ventilation's primary purpose is heat reduction from the sun to lower cooling loads in summer and prevent ice dams in the winter. You cannot fix attic moisture issues with more ventilation, and more ventilation can make it worse. As to shingle life? More affected by roof color than ventilation---put on a light colored roof if you are concerned about heat degridation.

@Freonleon 2 жыл бұрын

These old houses are not net zero and most all houses built up to the last 5 years leak air from interior to attic same as crawl space to interior, your not gonna be able to seal it all

@CharlesBuell 2 жыл бұрын

@@Freonleon they do not have to be net zero to get them to a point where whatever small amount of moisture that enters the home from the crawl or into the attic does not cause problems. Totally doable. It is not happening due to laziness and not caring more than anything.

@jld4870 Жыл бұрын

So I have a house built in 1946, no attic issues at this time. The 30+ roof needs replacement. The roofing company said the new roof will need more venting. When I asked why if the house has done fine as is? They said because new materials will not allow ‘breathing’ like the current shingles. Does this make sense? Thanks

@CharlesBuell Жыл бұрын

@@jld4870 That might be true if your current roof is wood shingles/shakes. They may want to bring the venting up to current standards is all.

@jld4870 Жыл бұрын

@@CharlesBuell Thank you. Regarding the venting, I read where they need to match, (according to code/standards) but if for some reason the exact standard is off, it is ok to have more intake vents than exhaust vents-but never the other way around. Why would that be? Thank you.

@jackfarrell4727 3 ай бұрын

A properly vented attic will rely on convection. That means soffit vents and a clear path to a ridge vent. A 1:1 ratio is ideal.

@tynyyn5344 3 ай бұрын

Does that mean every rafter bay needs a vent or can you double the size of the vent and have two bays utilize that vent?

@jackfarrell4727 3 ай бұрын

@@tynyyn5344 every rafter bay should be vented past the insulation. The insulation should not "choke" the air flow. Bottom to top is the ideal ventilation.

@jackfarrell4727 3 ай бұрын

Sometimes this is not possible. If , in a valley, it is not possible to vent ( convection) . Only , let off heat to the ridge vent. Sorry, better than nothing.

@jackriley5974 5 жыл бұрын

Be careful when selecting a ridge vent and opt for gable vents in addition if the aesthetics will allow.

@hmdwn 3 жыл бұрын

Can't have soffit, gable and ridge vents together.

@jackriley5974 3 жыл бұрын

@@hmdwn And, in your expert opinion, why is that??

@CyclingYYC 3 жыл бұрын

@@jackriley5974 I believe its because the air will go from gable vent --> Ridge vent, and not necessarily allow proper circulation. That's what I was told atleast... I'm no expert.

@ThriftDiving 2 жыл бұрын

@@jackriley5974 The above comment is correct in that you can't have soffit vents, gable vents, and a ridge vent together. I have been researching this because I am trying to figure out the correct ventilation for my 16'x26' shed and everything I have gathered is that if you have a ridge vent, you either have to have soffit vents *OR* gable vents. If you had all three together, it moves the air in funny ways that defeats the purpose of ventilation.

@davidshumway9639 9 ай бұрын

If my soffit vents net free air calculates to 13 sq in / lin ft, and I put a 20 net free air ridge vent on, does that really matter? I know the ridge is supposed to equal 50% or less than the sum, so one would think that I should be looking for a ridge vent with a Nfa of 13 or less. But...., the actual ridge Nfa was determined by my builder when he cut the gap at the ridge, right? So if that gap square inches works out to less than 50 percent of the total sum, then the size of the hood doesn't matter right? I like the rigid vent better than the rolled, but I'm concerned that I might over size it and reverse the air flow. But I think the gap is the regulator and not the cap. Like the size of the carburator is what dictated cfm, not the size of the breather. Right?

@DavidJohnson-dc8lu 2 жыл бұрын

If ventilation and insulation was that good that snow never melted on the roof, that would cause weight problems for the roof over time and snow clogging in the gutters. Whilst no one wants an inefficient home, a home will never be perfect. A build up of heat does need to leave the house and to do that sometimes good old fashioned windows need to just be opened daily even on a freezing cold day.

@johnsavage6628 2 жыл бұрын

There has to be a better way to build a roof! Why have a peaked roof! Make it slanted from front to back and seal it!

@maryadjalal5435 2 жыл бұрын

It has to do with snow load

@mydevices5503 3 жыл бұрын

How does moisture from a house get through plaster board/dry wall as well as insulation into the loft space? Lol

@belconbuilds 3 жыл бұрын

The moisture that leaves your house and enters your attic is invisible vapour. There are thousands of tiny holes in a sheet of drywall that if added together equal a 1"x1" hole.....then you have a vapour barrier that is riddles with holes from stapling the vapour barrier in place. Moisture is in your attic no matter how well you think it is sealed. Also read reply above to Mr. Norris

@nourestani 3 жыл бұрын

This guy is full of nonsense just like any other company try to sell you based on opinion and not facts.... If you have moist going from your house to the Attic then then that's the problem so that's something that you have to fix and not by adding some ventilation in your attic

@belconbuilds 3 жыл бұрын

@@nourestani if you own a house in a cold climate, close off all of your attic ventilation and see what happens....frost will appear on the roofing nails, moisture then mold on the sheeting. As explained in the video the key difference is that air tight does not mean vapour tight and a vapour tight house would not be a healthy house. But I don't think I can convince you, so all the best to you and have a great day,

@nourestani 3 жыл бұрын

@@belconbuilds nope not really... I live cold climate and no issues... We wouldn't have all these issues if God damn american didn't build houses using Wood and instead like the rest of the world use solid materials...

@belconbuilds 3 жыл бұрын

@@nourestani actually we live in a wood frame house that was built in 1896...not a typo...... our house will be 125 years old this December 18th. No issues if built correctly. Concrete and masonry construction is not economical where I live, neither are steel studs/framing. If it were. I would built my next house with other than wood frame.

@nourestani 3 жыл бұрын

misinformation in terms of warm air in the attic during winter. it is not going to to get that hot that you would develop mildew... in America it is about opinion and not facts unfortunately.

@belconbuilds 3 жыл бұрын

Respectfully I would suggest you look at the "dew point". In the winter you can have dew (moisture) generated when the temperatures are below freezing, it appears as frost. When the conditions are right that dew point is established somewhere between the warm living space and the roof deck in an attic.....often the dew appears on the nails that penetrate the shingles. Moisture issues in snow belt areas are also created by snow blowing in attic vents. That's why I use Snowventco vents, look them up

@nourestani 3 жыл бұрын

@@belconbuilds not really you just making stories that a condition can appear but that condition can appear any other place not very different than if I say you have to reinforce your roof because if a car falls on it then it doesn't go through so it's a valid concern but what are the chances...

@2thedentist 3 жыл бұрын

@Morris G.. Dear you seem to tell something knowledgeable, but in the heat of the argument with other viewpoints, your conclusive point seems missing.. can you please conclude and suggest your plan to make efficient roofing or house design in reference to the context.. thanks..

@ceciliaortiz3017 3 жыл бұрын

Tell that to my attic where I had to pay a few thousand to treat for mildew because it didn’t have proper ventilation, the soffix we’re non existent and by the way, some houses have been built by builders violating city codes to cut corners. My house had no soffix and very little insulation. Day and night now that proper ventilation is in, mold has been treated and R69 insulation installed.

@davidconlin1196 2 жыл бұрын

Sir, This is absolutely proper information. I have read all your comments. I hope you are not in the business. Lack of ventilation also causes siding deterioration and carpenter ant damage. You could not have much experience .

@crazysquirrel9425 21 күн бұрын

Just added a soffit vent and my attic temps went UP.

@dskim9242 3 жыл бұрын

starting scatching does not help to understand contents. Very anoying

@johnsavage6628 2 жыл бұрын

An asphalt shingled roof is stupid. It has a limited life. It's going to need to be replaced. It holds heat in the summer and cold in the weather. It's stupid!

@johnkim1656 Жыл бұрын

30 years?