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Any Roofers... peak vent ?
Endlss
Member Posts: 1,068 ✭✭✭✭
Just had a new roof put on and thought we were getting a "peak vent".
I see alot of houses with the raised vent at the peak but our company cut both sides of the peak and put black paper down and then cap shingles. They had this black plastic mesh stuff but it's not up there.
This just ain't right with me somehow. Looks like everything is still sealed off completely.
I see alot of houses with the raised vent at the peak but our company cut both sides of the peak and put black paper down and then cap shingles. They had this black plastic mesh stuff but it's not up there.
This just ain't right with me somehow. Looks like everything is still sealed off completely.
Comments
The "mesh" may be one of the new vent ridge materials. Got a pic?
Is it this type of ridge vent?
Is it this type of ridge vent?
Nope it looks just like an old regular roof with small thick roof shingles ran sideway overlapping.
Is it this type of ridge vent?
This type of vent is what you want on your house. The only difference is that you don't want it to go all the way to the end like this. This will get rain blown into it like this. You want the ridge vent about 4' from the end.
I agree it should not go to the end. I stop mine 2 feet from the end and seal the joints with silicone.
Some actually come with a rubber boot for the end. But yes silicone or roofing cement will work. On short runs I will stop it around 2' also. On large runs I like about 4'. Just personal preference. Works either way.
quote:Originally posted by allen griggs
Is it this type of ridge vent?
This type of vent is what you want on your house. The only difference is that you don't want it to go all the way to the end like this. This will get rain blown into it like this. You want the ridge vent about 4' from the end.
Looks like Cobravent to me, but I am not a roofer. Some run it the whole length for 'looks' per se, but don't cut the sheathing.
If the OP has NO ridge venting, or gable venting depending on the roof style,........can you say 'very short shingle life' and increased cooling costs?[:0]
It is just as important that the eaves be vented to let air in the bottom also.
Ventaridge is an option and it has its place, but it is only one kind of vent. It is great when you need vented between each rafter such as may be needed with a some types of construction, a cathedral ceiling for instance.
Bottom line is the roof needs vented, what ever type is installed.
Here is a pic of a ridge vent retrofit I did on one of the rentals.
Before I started my work this house had a bunch of these little circular soffit vents.
There were 52 of these little vents.
This was almost enough soffit vent for this house. But, many of these vents were partly clogged with spider webs, bugs, dust, etc.
So as you can see I replaced some of the little round vents with the big rectangular soffit vents.
One of the rectangular vents equals 12 of the round ones. I replaced 5 of them with the big rectangular vents so now the house exceeds spec on soffit vent area.
You have to have cool air coming in down low on the roof, and hot air going out at the top.
No cool air coming in low, the ridge vent will not work.
I agree it should not go to the end. I stop mine 2 feet from the end and seal the joints with silicone.
Please, why would that make a difference?
IMO
quote:Originally posted by allen griggs
I agree it should not go to the end. I stop mine 2 feet from the end and seal the joints with silicone.
Please, why would that make a difference?
I am a roofer by trade. And I have installed 1000's of feet of this stuff. Probably miles. I dont think it matters if it goes all the way to the end or not. They used to recommend stopping 2 ft from the rake edges. Always seemed a little wierd to me? Some manufacturers installation literature clearly shows it going all the way across the peak. Which out over the overhang, rigt at the peak, probably doesnt do much. In my opinion (and lets face it, opinions are a matter of personal preference) it just looks better and more complete ALL the way across.
As usual here on GB, you get alot of info. Most of reall good advice.
I will add, most manufacturers have different slot widths for "truss construction" vs "ridge pole construction" and I concur that proper soffit ventilation is as important as proper ridge vent ventilation. Without one, the other one doesnt work as designed.
Hope this all helps.
quote:Originally posted by He Dog
quote:Originally posted by allen griggs
I agree it should not go to the end. I stop mine 2 feet from the end and seal the joints with silicone.
Please, why would that make a difference?
I am a roofer by trade. And I have installed 1000's of feet of this stuff. Probably miles. I dont think it matters if it goes all the way to the end or not. They used to recommend stopping 2 ft from the rake edges. Always seemed a little wierd to me? Some manufacturers installation literature clearly shows it going all the way across the peak. Which out over the overhang, rigt at the peak, probably doesnt do much. In my opinion (and lets face it, opinions are a matter of personal preference) it just looks better and more complete ALL the way across.
As usual here on GB, you get alot of info. Most of reall good advice.
I will add, most manufacturers have different slot widths for "truss construction" vs "ridge pole construction" and I concur that proper soffit ventilation is as important as proper ridge vent ventilation. Without one, the other one doesnt work as designed.
Hope this all helps.
Been roofing and building since 1968. The reason I stop my ridge vent ' from the edge is because of rain blowing into the ends of the vent. I have installed vent to the edge before with rain blowing into the edge. But in the final decision I think it depends on preference and what the roofer has been taught.
I was building a new house for myself.
When I built the roof I left a 1 1/2 inch gap at the ridge between the plywood sheets coming up from each side.
But I did not install a ridge vent.
I ran the black felt paper right over the ridge, then installed roof shingles and cap shingles as was done in the old days.
I moved into the house.
I waited until July, and then hung a thermometer next to the ceiling upstairs inside the house.
In the afternoon I would get a reading of 90 to 92 degrees, if it was a sunny day.
I ran that test all month long, temps were consistently in the 90 plus range.
Then I went up on the roof one morning, removed the cap shingles, cut the felt paper with my razor cutter to open up the 1 1/2 inch gap.
Presto, the roof was ready for the ridge vent to be installed!
I had built good soffit vents into the house already.
I installed the ridge vent.
Next day was a sunny August day, I looked at my ceiling thermometer, it never exceeded 76 degrees.
So it was 15 degrees cooler up there with the ridge vent.