Metal Roofing

[chrisrosenb]

We purchased a foreclosed home next door to us. The house is a ranch style & there is also a 3 car unattached garage. Both building lots of work. So we are starting at the top. The roofing on both buildings is 3 tab asphalt shingles & need to be replaced. I am considering using hidden fastener metal roofing.
I have searched & have not found the clear cut way to install it. The options I found were to put the metal directly over the asphalt shingles, or put foam fanfold insulation over the shingles & put the metal over the insulation. Other options are to install furring strips over the shingles & put the metal over the furring strips, or  remove the shingles, lay felt paper & put the metal over the felt paper.

I am open to suggestions.

 

[Slappy]

We purchased a foreclosed home next door to us. The house is a ranch style & there is also a 3 car unattached garage. Both building lots of work. So we are starting at the top. The roofing on both buildings is 3 tab asphalt shingles & need to be replaced. I am considering using hidden fastener metal roofing.
I have searched & have not found the clear cut way to install it. The options I found were to put the metal directly over the asphalt shingles, or put foam fanfold insulation over the shingles & put the metal over the insulation. Other options are to install furring strips over the shingles & put the metal over the furring strips, or  remove the shingles, lay felt paper & put the metal over the felt paper.

I am open to suggestions.

I'd check your local building codes &/or your cities building code inspection dept. 1st before you start considering any of the above options .
As where I live it's illegal to install any new roof over a older surface like shingles , I had to tear off my old roof singles & THEN lay OSD board down as The old roof had a slat base that had too wide a gap between the slats to pass even the old code when the house was built .
then figure that removing the old surface is better any way as your taking a lot of weight off the roof  instead of adding more

 

[epicxt]

I would definitely remove the old roofing and clean the sheeting as best as possible (remove all old roofing nails/staples/tar paper). Metal roofing is really durable but will telegraph any irregularities in the substrate over time.
I prefer the snaploc system from Champion metal.

 

[Slappy]

one other thing when you or if you  do remove your old asphalt shingles they are recyclable as is the tar paper , the asphalt MFGers use it in making new asphalt much like all old asphalt is now recycled as the oil content is now valuable to reuse .  The roofers actually sell the tear-off materials . 

 

[amt]

Search for standing seam metal roof

 

[epicxt]

one other thing when you or if you  do remove your old asphalt shingles they are recyclable as is the tar paper , the asphalt MFGers use it in making new asphalt much like all old asphalt is now recycled as the oil content is now valuable to reuse .  The roofers actually sell the tear-off materials .

Dang! That's good to know! Thanks!

 

[chrisrosenb]

Thanks for the replies.

I this area, a house can have 2 layers of asphalt roofing. A metal roof can be installed over the 2 layers of asphalt roofing. When I did roofing, I never installed roofing over an old layer & now when asked, I always advise  against putting on 2 layers of asphalt shingles. A lot of people have it done anyway, because of the cost of the tear off.

I have not heard of recycling roofing in this area, but other than answering a few questions about types of roofing & contractors, I have been staying away from roofing.
We do have a Owens Corning roofing plant in our area, so I will look into recycling.

A standing seam type roof is the type of metal roof we are looking into. The Champion Metals snaploc looks like a simple to install system.

 

[Slappy]

The asphalt recycling I talk about is that the Road Asphalt plants grind up the old shingles & add that to their pavement recipe it goes hand in hand with them using old tires as well . Ive been told that the same machine that grinds up old road pavement accepts shingles as well . They actually like the shingles for the recipe for the  top coat grade . Yeah it's a win - win for everyone 

 

[Tinker]

The asphalt recycling I talk about is that the Road Asphalt plants grind up the old shingles & add that to their pavement recipe it goes hand in hand with them using old tires as well . Ive been told that the same machine that grinds up old road pavement accepts shingles as well . They actually like the shingles for the recipe for the  top coat grade . Yeah it's a win - win for everyone 

What happens to the nails? [eek]
Tinker

 

[epicxt]

The asphalt recycling I talk about is that the Road Asphalt plants grind up the old shingles & add that to their pavement recipe it goes hand in hand with them using old tires as well . Ive been told that the same machine that grinds up old road pavement accepts shingles as well . They actually like the shingles for the recipe for the  top coat grade . Yeah it's a win - win for everyone 

What happens to the nails? [eek]
Tinker

Les Schwab pays to have them left in.

 

[Slappy]

The asphalt recycling I talk about is that the Road Asphalt plants grind up the old shingles & add that to their pavement recipe it goes hand in hand with them using old tires as well . Ive been told that the same machine that grinds up old road pavement accepts shingles as well . They actually like the shingles for the recipe for the  top coat grade . Yeah it's a win - win for everyone 

What happens to the nails? [eek]
Tinker

I would imagine that the same way they remove the steel belting in the tires is used  :

 

[leakyroof]

The asphalt recycling I talk about is that the Road Asphalt plants grind up the old shingles & add that to their pavement recipe it goes hand in hand with them using old tires as well . Ive been told that the same machine that grinds up old road pavement accepts shingles as well . They actually like the shingles for the recipe for the  top coat grade . Yeah it's a win - win for everyone 

What happens to the nails? [eek]
Tinker

  Tinker, THAT'S how you get that good grip in Winter.....All those little spikes sticking up... [big grin]

 

[greg mann]

The asphalt recycling I talk about is that the Road Asphalt plants grind up the old shingles & add that to their pavement recipe it goes hand in hand with them using old tires as well . Ive been told that the same machine that grinds up old road pavement accepts shingles as well . They actually like the shingles for the recipe for the  top coat grade . Yeah it's a win - win for everyone 

What happens to the nails? [eek]
Tinker

Les Schwab pays to have them left in.

In this neck of the woods it would be Belle Tire. In 2005 I took a trip through the Western States and could not believe how many tire stores Schwab has.

 

[Offshoreman69]

Two pieces of advice -worth the priced paid for it of course!- I took the roof off my parent's 1970's era rancher 10 years ago and put down hidden fastener steel panel roofing in it's place.

Advice 1 - Definitely take the roofing off down to the deck; you'll want a good hard look at the roof deck that you are about the bury under steel for the next half century. Repairs at this stage are easy and relatively cheap and the weight of 2 layers of 3 tabs on my parent's roof did not need to be added to. And steel is not forgiving of big humps and bumps in the deck.

Advice 2 - Take a look at this article I used from Fine Homebuilding as a guide http://www.finehomebuilding.com/how-to/articles/installing-steel-roofing.aspx I was concerned at first about tackling such a big job as my first try roofing but you're not in a race and it can be done very well if you take your time and get the layout just right. I tried not to take it personally when the pros I had quote me the roof tell me an amateur could never do it but they make their money because of how fast they can do a great job. It took me a huge amount of time but the roof looks great 10 years on and I saved a bundle and learned even more.

Good luck, and check out other Fine Homebuilding books on roofing as well. Good resources all around

Glen

 

[epicxt]

What happens to the nails? [eek]
Tinker
[/quote]
Les Schwab pays to have them left in.
[/quote]

In this neck of the woods it would be Belle Tire. In 2005 I took a trip through the Western States and could not believe how many tire stores Schwab has.
[/quote]
Yeah they're almost like Starbucks here in the NW.