New Guy
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Can you please tell me if this is a fair price to remove 2layers of shingles and one layer of cedar shakes. Put new osb and underlayment and then ribbed steel roof on top. Some of the roof is 12/12 pitch and it is not an easy roof. Is $12750 a fair price?
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Why are you asking on a scrap metal forum?Originally Posted by PeteLabonte
As far as price, we couldn't even guess as you don't tell us how many square, how many valleys, any dormers, 1 story or 2, are you paying disposal, etc.
Metal Recycling Entrepreneur
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It's kinda like asking .... How long is a piece of string ?
~ Every job is different.~
Been in the trade for over thirty years now. I'm still not sure that metal roofing is a good choice for residential roofing. You might run into condensation & rot problems in four or five years. It would be a lot more prudent to stay with the tried & true asphalt shingles. If the job is done right it could last for the next 40 - 50 years.
Don't use OSB for the underlayment. You would be much better off with 1/2" CDX fir plywood fastened down with 3" GRK's. Make sure that the panel edges are firmly attached to the rafter below. Same / same with the panel edges if metal roofing is used. You don't want that stuff lifting as the roof expands & contracts with the extremes of heat / cold that a roof experiences.
Metal Recycling Entrepreneur
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That all depends on how many square (10' x 10' area) you have. Considering they have to remove two layers and wood shake, which can be a pain in the #$@, with new OSB and a metal roof being installed it sounds like the price might be right. Its hard to say without knowing how many square feet the roof is.
Metal Recycling Entrepreneur
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Seriously ... i would avoid using oriented strand board (OSB). It's okay for temporary utility buildings that you're looking to put up on the cheap but it doesn't hold up that well. Figure ten to twenty years and then it might have to be replaced ? Wood boring insects wreck havoc on the stuff.Get any kind of moisture in there and it just turns to mush.
I had to re-sheath a seventeen year old building that was done with OSB last year. Same thing with a 10 year old roof the year before. You're a lot better off to do it right the first time with a halfway decent boarding board -or- plywood. You spend a little more on the front end but it saves a ton of money on repairs over the long run.
Personally why bother stripped it? Leave all the old crap on. Put the new sheating right over the top covering entire thing. Then lay down the metal and have a beer down. My roof on my trailer 14x70 was done same exact way. Cost 3500 to do with labor and no mess. If anything the old shingles will act like insulation.
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after so many layers, you need to worry about the extra weight
Currently looking for a job in or related to scrap/recycling. Relocation is possible for the right offer.
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It's called Building Codes. You are only allowed to shingle over once. The same should apply to putting on a metal roof.
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BUYING ALL COMPUTER SCRAP WORKING OR NOT
CHECK OUT MY BUYERS THREAD http://www.scrapmetalforum.com/scrap...nic-scrap.html
https://getjunk.net/Knox-County-TN-0...Recycling.html
Cash In The Trash
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Never stops people from doing it.
My personal record is finding 7 layers on one house roof. Last roof I did had 4 layers.
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I'm talking about current building codes that were probably non existent when that last course was added. And yes, I have stripped my fair share of roofs, many with 3 or more layers.
Keeper of the Cooler!
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Just cause others do it doesn't mean it's a good idea. Heh.
Probably the reply I got most as a kid from my mom "If soNso jumped off a bridge would you do it to?!"
So all you roofers...tell me how to patch the four holes in my porch roof. Well..let's hold off on that, storm ain't passed yet.
Sirscrapalot - Funny how many different walks of life manage to converge in one location.
*edit - Adding a video to the music scrap thread. An it'll mention roofs!
Metal Recycling Entrepreneur
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Customs and practices vary from place to place. We don't have any building codes here. In all the time i've been doing this i can only remember one roof that had more than one layer of shingles.
Around heeyah, it's standard practice to completely strip the roof and re-nail the boarding. The main reason for doing this is because they didn't have galvanized nails back in the day. The old fashioned common bright nails have pretty much rusted out and there's not much holding the boarding to the roof.
You have to watch out for the older roofs that have more than one layer of shingles. They're like a time capsule that may contain toxic nasties. The reason for this is because up until the 1970's some manufacturers reinforced their asphalt shingles with asbestos fibers. There's really no way of knowing what you're dealing with unless you send a sample out to the lab first. It's the same with the tar paper underneath. It's not as common, but i have seen one place that had tar paper with asbestos added. When you do the tear off that stuff gets up in the air and you get covered in it. It's not a big huge hairy deal. It's just one of those job hazards that you need to be mindful of.
~ Times have changed. It's an entirely different ballgame now. ~
The big change happened when oil ( and scrap ) prices topped out awhile back. It was getting pretty bad for the shingle industry because oil prices were so volatile. They couldn't price a truckload of asphalt shingles delivered to the building supply yard until the day it was delivered. This was causing all kinds of problems and they were losing money big time.
The shingle manufacturers had been pushing for fiberglass based shingles since they were first introduced in the 1980's. Fiberglass based shingles earned a bad reputation when they first came out because they didn't hold up. The roofers were getting a lot of call backs so they didn't want to have anything to do with them.
The industry used the global oil shortage & volatile prices as an excuse to stop making asphalt based shingles. Instead, they shifted over to fiberglass based shingles and forced the change on the building industry.
As you would expect, it was a blast from the past. The fiberglass shingles started blowing off the roof and the bigger roofing guys in this area took a terrible financial beating on callbacks. When the roofers called on the manufacturer to honor it's warranty the roofers were left holding the bag. The manufacturer claimed that the shingles weren't installed properly.
As far as i know ..... The shingles available to work with these days are fiberglass based. They look about the same as the old asphalt based but there's a big difference in how you install them.
First: No more multiple layers of roofing. They need to be laying on a flat uniform surface so they can seal down properly.
Second: No more boarded roofs. Just plywood roofs. If you've got a boarded roof put a layer of plywood over it.
Third: Give some thought to your underlayment. The plastic tarp stuff is new to the market and hasn't proven itself yet. The #15 felt out of China is brittle & tears easily. Use a #30 felt.
Better yet ! Use Grace Ice & Water Shield. That way the roof won't leak when the fiberglass shingles blow off !
Last edited by Scrappah; 10-08-2016 at 07:46 AM.
Keeper of the Cooler!
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I just learned more about roofing from that one post then I did in the last 30 years...
Glad I just smash things for a living. lol.
Sirscrapalot - Rain drops are falling on my head..
Cash In The Trash
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Raise your hand if you have ever had to strip shingles off the side of a house
Metal Recycling Entrepreneur
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Old cars and old houses ..... if you know what i mean ?
The quickest & best way to strip asphalt shingles off the wall is with an excavator. Easy peezy.
Metal Recycling Entrepreneur
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Wow, we simply don't have shingles on roofs in NZ at all.
Its all zinc plated corrugated iron sheet, no plywood under it, just rafters and thinish boards over that, then aluminium/tar paper, then the corrugated iron roofing.
Or 'ColourSteel' roofing on new houses, tile roofing on some houses.
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