Metal Roofs Are Soaring In Popularity In The Residential Market

 
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Old 09-24-2017, 12:38 PM   #41
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Re: Metal Roofs Are Soaring In Popularity In The Residential Market


there are metal roofs that rely on sealant and gaskets to stay water tight,there are also metal roofs that don't need these things..which of those are ''better''?
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Old 09-24-2017, 12:51 PM   #42
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Re: Metal Roofs Are Soaring In Popularity In The Residential Market


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Originally Posted by fjn View Post
Could you give us the just? I'm interested


Our conversation was not about roofs,however,when he mentioned that his book was coming out in a month or so,I had to ask.

He said things along the lines of manufactures changing the formula of asphalt shingles over the years. They were not the same as many moons ago. Should you read the book,you will see he is a big advocate of installing copper over the ridge cap. He claims his findings support the premise that the life cycle of the current shingles will be greatly extended if that measure is taken.
https://www.certainteed.com/resource...ghterBroch.pdf
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Old 09-24-2017, 12:59 PM   #43
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Re: Metal Roofs Are Soaring In Popularity In The Residential Market


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I know a quality shingle when I install one. Almost every premature roof failure is due to inadequate ventilation.

Hey:

The big push nowadays is for unvented attics. Foamed rafters, etc.

What's your take on that?

I'm not setting you up, just curious.

The "gurus" are saying that venting does NOT increase longevity - which is contrary to what I was brought up with. In fact, one of the reasons given for tear-off replace over a 2nd roof is that the extra heat that built-up because of the added thickness - is what helps shorten the life of a re-roof job.

Personally, I really don't care. Even cheap roofs seem to make it 20 years - thats pretty good.
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Old 09-24-2017, 01:12 PM   #44
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Re: Metal Roofs Are Soaring In Popularity In The Residential Market


http://www.greenbuildingadvisor.com/...-attic-venting
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Old 09-24-2017, 04:14 PM   #45
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Re: Metal Roofs Are Soaring In Popularity In The Residential Market


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Hey:

The big push nowadays is for unvented attics. Foamed rafters, etc.

What's your take on that?

I'm not setting you up, just curious.

The "gurus" are saying that venting does NOT increase longevity - which is contrary to what I was brought up with. In fact, one of the reasons given for tear-off replace over a 2nd roof is that the extra heat that built-up because of the added thickness - is what helps shorten the life of a re-roof job.

Personally, I really don't care. Even cheap roofs seem to make it 20 years - thats pretty good.
Assuming the foam doesn't break down.

I'm talking to more and more people who are framing their roofs with 11-7/8 I joists and foaming. (2) 20' I joists is about $60. That's got to be a lot less than a ~ 30' scissor truss with roughly 8/12. I know there's more cost than that but custom Truss prices are going through the roof. Pun intended.
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Old 09-24-2017, 04:59 PM   #46
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Re: Metal Roofs Are Soaring In Popularity In The Residential Market


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Assuming the foam doesn't break down.

I'm talking to more and more people who are framing their roofs with 11-7/8 I joists and foaming. (2) 20' I joists is about $60. That's got to be a lot less than a ~ 30' scissor truss with roughly 8/12. I know there's more cost than that but custom Truss prices are going through the roof. Pun intended.


I 'm a tad gun shy using I joists in just about any application. Just can't get comfortable relying on glue and wood chips to enclose space. They may be absolutely fine,it just goes against the grain in my book. Obviously Advantech has fared quite well,regular osb,not so much.
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Old 09-24-2017, 05:06 PM   #47
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Re: Metal Roofs Are Soaring In Popularity In The Residential Market


Big Johnson,the issue as I understand it,is not so much about streaking but shingle break down. When the guys who bought the book read it,I'm sure they will weigh in.
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Old 09-24-2017, 05:32 PM   #48
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Re: Metal Roofs Are Soaring In Popularity In The Residential Market


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Assuming the foam doesn't break down.

I'm talking to more and more people who are framing their roofs with 11-7/8 I joists and foaming. (2) 20' I joists is about $60. That's got to be a lot less than a ~ 30' scissor truss with roughly 8/12. I know there's more cost than that but custom Truss prices are going through the roof. Pun intended.
Yes. I can see where the cost savings are considerable and have worked the numbers. Which makes me suspect that cost may be causing some to speak more highly of unvented spaces than they otherwise would.

Trusses allow complex scizzored, and/or panned elements. Cost more, but onsite labor & time go down.
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Old 09-24-2017, 05:36 PM   #49
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Re: Metal Roofs Are Soaring In Popularity In The Residential Market


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Yes. I can see where the cost savings are considerable and have worked the numbers. Which makes me suspect that cost may be causing some to speak more highly of unvented spaces than they otherwise would.

Trusses allow complex scizzored, and/or panned elements. Cost more, but onsite labor & time go down.

I totally agree, trusses are worth their extra cost for me. But these crazy increases have got to slow down or they soon won't be. Maybe.

A truss package that cost me a little over $5K 6 years ago now costs $15K
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Old 09-24-2017, 05:45 PM   #50
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Re: Metal Roofs Are Soaring In Popularity In The Residential Market


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Originally Posted by SmallTownGuy View Post
Hey:

The big push nowadays is for unvented attics. Foamed rafters, etc.

What's your take on that?

I'm not setting you up, just curious.

The "gurus" are saying that venting does NOT increase longevity - which is contrary to what I was brought up with. In fact, one of the reasons given for tear-off replace over a 2nd roof is that the extra heat that built-up because of the added thickness - is what helps shorten the life of a re-roof job.

Personally, I really don't care. Even cheap roofs seem to make it 20 years - thats pretty good.


Quote:
Originally Posted by A&E Exteriors View Post
Don't know. But a cold roof system allows for ventilation in this scenario.

What you describe is a hot roof. It can shorten shingle lifespan but usually only of the building envelope is not tight
I will add that while interesting the link Struble posted I disagree with the ice dam section. I will have to take some pics but a couple years ago I had a customer with a house in East Grand Rapids that had no overhangs, no ventilation, and serious ice dam problems.

We installed edge vent, baffles, insulation, and ridge vent. The man hasn't had to do any ice removal sense and ever time I see the guy (he is a shipping logistics guy at the local lumber yard) he tell me he is still "pleased as punch" about the job we did. But there we are back to it is the whole system that needs to be considered and not just single components of the system.

I would never not vent a roof deck but that's just me and I live in the land of snow and ice. There are more ways than one. If the trend leads to insulating the underside of the deck, baffles can be used from rave to ridge easily, or you can insulate, deck, polyiso sheet insulation, the furring strips, another deck then roofing.

My experience shows the roof deck takes the brunt of the heat and older homes with inadequate ventilation require lots of wood replacement not due to leaks but trapped moisture. That is precisely why I am doing my current job. Place had 2 pot vents and next to no intake. We are venting the soffit and adding ridge and hip vents. Replaced all the sheeting and installing shingles
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Old 09-24-2017, 05:57 PM   #51
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Re: Metal Roofs Are Soaring In Popularity In The Residential Market


Quote:
But there we are back to it is the whole system that needs to be considered and not just single components of the system.
yup

Quote:
My experience shows the roof deck takes the brunt of the heat and older homes with inadequate ventilation require lots of wood replacement not due to leaks but trapped moisture.
yup.

Michigan has the most miserable extremes of heat/cold/moisture of any state I've lived in.

Well, the lower peninsula. The upper ain't half bad.
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Old 09-24-2017, 06:03 PM   #52
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Re: Metal Roofs Are Soaring In Popularity In The Residential Market


Quote:
Originally Posted by A&E Exteriors View Post
I will add that while interesting the link Struble posted I disagree with the ice dam section. I will have to take some pics but a couple years ago I had a customer with a house in East Grand Rapids that had no overhangs, no ventilation, and serious ice dam problems.

We installed edge vent, baffles, insulation, and ridge vent. The man hasn't had to do any ice removal sense and ever time I see the guy (he is a shipping logistics guy at the local lumber yard) he tell me he is still "pleased as punch" about the job we did. But there we are back to it is the whole system that needs to be considered and not just single components of the system.

I would never not vent a roof deck but that's just me and I live in the land of snow and ice. There are more ways than one. If the trend leads to insulating the underside of the deck, baffles can be used from rave to ridge easily, or you can insulate, deck, polyiso sheet insulation, the furring strips, another deck then roofing.

My experience shows the roof deck takes the brunt of the heat and older homes with inadequate ventilation require lots of wood replacement not due to leaks but trapped moisture. That is precisely why I am doing my current job. Place had 2 pot vents and next to no intake. We are venting the soffit and adding ridge and hip vents. Replaced all the sheeting and installing shingles
i think the focus was more about where ventilation stand in regards to keeping the roof cool..most likely the added insulation did more in that regard
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Old 09-24-2017, 06:25 PM   #53
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Re: Metal Roofs Are Soaring In Popularity In The Residential Market


I can agree with that. , however without addressing every aspect we would not have cured his ice problem. There are parts of his roof that is plaster on the bottom of the rafters, where we plugged the end of the cavity at the kneewall, slid a baffle in from both sides and blew it full of chopped fiberglass.

Trying to keep shingles cool just doesn't really make sense, they are asphalt and get lots of direct sunlight. The solar reflective shingles are amazingly 50+ degrees cooler than standard but they cost almost 300 per sq last I checked. For that price you can get nice metal and I would not buy the reflective ones personally.
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Old 09-24-2017, 06:25 PM   #54
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Re: Metal Roofs Are Soaring In Popularity In The Residential Market


I will have to find pics, I think they are on my laptop
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Old 09-24-2017, 06:31 PM   #55
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Re: Metal Roofs Are Soaring In Popularity In The Residential Market


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there are metal roofs that rely on sealant and gaskets to stay water tight,there are also metal roofs that don't need these things..which of those are ''better''?



I'll put my money on the ones that don't depend on gaskets,and caulk. Caulk IMHO,is window dressing,not to be relied upon as main line of defense.
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Old 09-24-2017, 08:53 PM   #56
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Re: Metal Roofs Are Soaring In Popularity In The Residential Market


exactly,not all metal roofing is equal,same with composition,and just my opinion i'd rather have a composition roof with a leak than a metal one,they are almost always easier to repair..metal?..not so much
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Old 09-24-2017, 10:37 PM   #57
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Re: Metal Roofs Are Soaring In Popularity In The Residential Market


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exactly,not all metal roofing is equal,same with composition,and just my opinion i'd rather have a composition roof with a leak than a metal one,they are almost always easier to repair..metal?..not so much
We like the standing seam roofs with no fasteners on the outside. We are getting this one ready now. It will look like the house.
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Old 09-25-2017, 07:33 AM   #58
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Re: Metal Roofs Are Soaring In Popularity In The Residential Market


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I totally agree, trusses are worth their extra cost for me. But these crazy increases have got to slow down or they soon won't be. Maybe.

A truss package that cost me a little over $5K 6 years ago now costs $15K
You buying Michigan or Canadian trusses?
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Old 09-25-2017, 11:50 AM   #59
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You buying Michigan or Canadian trusses?
Michigan
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Old 09-25-2017, 01:32 PM   #60
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exactly,not all metal roofing is equal,same with composition,and just my opinion i'd rather have a composition roof with a leak than a metal one,they are almost always easier to repair..metal?..not so much


Very true,however,the industry is moving towards having the roof finish be there almost for aesthetics. There are systems for protection of interiors with disasters like the two we just had. Some specs.want ice and water covering entire roof,and that is the logic of the zip wall and roof systems.

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