We're planning to use SIP roof to avoid any attics - more like vaulted ceiling throughout the house.
We live in San Diego area ( house got burnt)  and don't want any wood in exterior. Than we did not like an idea to use
a regular OSB SIPs as a roof base. However, by using steel SIPs we're facing a problem of placing tiles (shingles) on the top
of that roof. Are there any 3-layers SIPs, like steel - osb board- foam?
What would be the best approach in that case? Metal roof over steel SIP? Again how to connect it to a steel SIP?
Any suggestions will be appreciated.
Thanks.

Good question, and actually you can appy shingles to Steel SIPs. They are just screwed down with the same washers as you would see with a nail gun with nails. However, if you can agree on a look, I always suggest metal roofing systems over anything else because of the high durability and little to no maintence needed with a shingled roof. These days there are metal systems that look like shingles or ceramic tiles that you may want to look into. I am curious to what you are attaching you roof panels. What type of wall framing are you using?

Charles

We're just planning to use ICF based walls and SIP roofs. Are there any considerations?
Thanks.

Charles what washers would that be? I haven't seen any washers/nails with nail gun

Olegy, that is a great way to go frankly. I prefer SIP walls as well as SIPs roof panels, but ICFs walls are a great system. Any considerations with application are you asking about?

"SteelSipMan" I am not sure if you are serioous, but roofers use a neoprine(excuse the spelling) washer around the nails to apply shingles. And yes there are nail guns that run the washers and nails together. They have separate loading chambers however. If you are not familiar with construction, you wouldn't know about them but are becoming common.

Charles

Serious as a heart attack, is this approved by the shingle manufacturer?

Charles;

are you a licensed builder?
roofing nails do not have neo washers, why would you need on a steel skin panel?

As far as I understand, the underlayment is still required, if metal roof is used. So the correct approach will be to use screws to fasten underlayment to metal SIPs. then use metal shingles intelocking system to avoid further puncturing of the SIPs. Am I correct?
Also, cost wise. Am I corect, if less heavy trusses will be used, less labor cost to install interlocking shigles.
What would be an estimate in terms of the cost comparison to, let say, regular clay tiles?
Is metal, interlocking shingles are generaly more or less expensive?
Please, share you thoughts and/or experience.

olegy;

an underlay for a slip sheet is recommended for steel over steel SIP construction. Then use screw attachment of metal shingles or screw attachment of asphalt shingles ( no neoprene washers required for asphalt shg.)
metal shingles are definetly more than asphalt
trusses are not required with steel SIPs
steel tiles/shingles are about 2/3 cost of clay tile , but will last twice as long

Note:
clay tiles may also be attached to steel sips with proper underlayment and adhesive

 

I assume your ICF's have a stucco or stone exterior? Is there a melting issue in a large fire?
I agree with the preference for SIPS walls above, being simpler as well. I would also consider standard framing (maybe with an intumescent coating) for the roof structure with a fire-rated ply (http://www.intlbarrier.com/products/blazeguard/wood_panel.htm). Spray foam insulation. Easier for all concerned and very tight.
Use a metal roof for cinder resistance and stucco or cementitious siding (Hardie).

I did not proofread my suggestion obviously, I meant the neo washers for the underlayment for shingles, or other roofing material.
I am sure most of s would suggest the usde of metal roofng material because as mentioned, they last a lot longer with little to no maintence.

Charles

Charles;

Why would one need a neo washer for underlayment?

It is not used in conventional construction

Well here in the south, we apply our felt paper with nails or screws with washers.

Well I got new for you, here in the south we use simplex nails, tin tabs,  but never have I seen neo washers!
Neo washers are thick and along with a screw fastner the woud cause a bump under the shingles.

I don't think your posts are well thought out

I question your knowledge of construction in general, please explain your background and where you draw from your experience when you post answers 

OUCH

Although we are talking about the same "tabs", you are right, they are not of a neo made material. I was wrong about the materiial from which the tabs are made, however I was referring to the same thing. When applying the the underlayment on a still SIP, instead of nails, you would use screws with those tabs. My mistake to the original question in this forum.
As far as my background, I just finished another SIP project, and that makes 9 homes and other structures from SIPs.

Charles

Charles;

You constantly change your story and it is clear that you lack experience on the subject of steel sips. I have no doubt you are affliated some how with some one, as you have just enough knowledge to be dangerous. Maybe you are sub.
But for you to say that "you finished another SIP project" is not completely accurate for "you" are not a licensed builder are you?