Ksandjs, Can you give us an example of what you mean by "expanded glass"? I am not familiar with that particular product or performance characteristics.
Also, was there no key way or wedged/sloped design to interlock the roof to the wall? Seismic conditions change rapidly in some places, so ICF construction techniques should plan for that future inevitability. If stick built houses are "hundred year construction", the ICF home should be calling itself thousand year construction.

Insuldeck can engineer your ICF roof. I believe they can do flat, gabled or arched.

Bruce makes a good point. I have heard from a number of engineers that I have worked with in the past that the ICF manufacturers will sometimes aid a costumer with engineering and design services. I personally have not reached out to any yet but Bruce's comment reminded me and makes me hopeful/optimistic about the possibilities. Pitched and flat ICF-style or straight concrete roof decking seems to be a fairly standard business practice in a few other countries, such as Ireland, Japan, and Guam (US territory). Personally, I am most interested in Insuldeck and Quad-Deck, and I would be confident to mix and match the walls versus the roof. Meaning, if Nudura was the best price for my walls and SpiderTie was best for the roof, I wouldn't hesitate to have them engineered to be integrated vice paying extra for a matched system, although it seems there is typically a quantity discount when buying for a particular project or multiple projects at a time. I would certainly weigh the performance of the materials and design with cost and ease of engineering and install so I am certainly not endorsing one product over another. As mentioned in a previous post, most ICF wall systems are relatively the same but roof and floor decking is vastly different.

Bruce makes a good point. I have heard from a number of engineers that I have worked with in the past that the ICF manufacturers will sometimes aid a costumer with engineering and design services. I personally have not reached out to any yet but Bruce's comment reminded me and makes me hopeful/optimistic about the possibilities. Pitched and flat ICF-style or straight concrete roof decking seems to be a fairly standard business practice in a few other countries, such as Ireland, Japan, and Guam (US territory). Personally, I am most interested in Insuldeck and Quad-Deck, and I would be confident to mix and match the walls versus the roof. Meaning, if Nudura was the best price for my walls and SpiderTie was best for the roof, I wouldn't hesitate to have them engineered to be integrated vice paying extra for a matched system, although it seems there is typically a quantity discount when buying for a particular project or multiple projects at a time. I would certainly weigh the performance of the materials and design with cost and ease of engineering and install so I am certainly not endorsing one product over another. As mentioned in a previous post, most ICF wall systems are relatively the same but roof and floor decking is vastly different.

Bruce makes a good point. I have heard from a number of engineers that I have worked with in the past that the ICF manufacturers will sometimes aid a costumer with engineering and design services. I personally have not reached out to any yet but Bruce's comment reminded me and makes me hopeful/optimistic about the possibilities. Pitched and flat ICF-style or straight concrete roof decking seems to be a fairly standard business practice in a few other countries, such as Ireland, Japan, and Guam (US territory). Personally, I am most interested in Insuldeck and Quad-Deck, and I would be confident to mix and match the walls versus the roof. Meaning, if Nudura was the best price for my walls and SpiderTie was best for the roof, I wouldn't hesitate to have them engineered to be integrated vice paying extra for a matched system, although it seems there is typically a quantity discount when buying for a particular project or multiple projects at a time. I would certainly weigh the performance of the materials and design with cost and ease of engineering and install so I am certainly not endorsing one product over another. As mentioned in a previous post, most ICF wall systems are relatively the same but roof and floor decking is vastly different.

mjchupka
if you need info on concrete roofs email me at insuldeckfloridataoldotcom

Does anyone have any additional current information about ICF roofs? Anyone proceed with the idea? The results? See my blog at www.ourhouseinthekeys.com

Also, does anyone have a concrete roof detail(s) for a 24" roof overhang and built in gutter system?

Marty,

This is what I come up with...
Gutter gets in the way of negative moment cantilever rebar. Moving it down solves that but the overhang gets thicker...

Thank you! I don't understand the lingo but an engineer had better!!!!!

I just saw your post. Especially about a elastomeric roof coating on a concrete roof. We intend to insulate the interior of the concrete roof. We hope it lasts longer than one year.
 

I am adding more blog posts to “Building Our House in the Florida Keys”.
As there is additional interest in hurricane resistance homes in coastal areas, I am covering wonky topics such as; Exterior Wall Finishes, Balconies, and Roofing.
Checkout the Resources section for links to information I have collected.
If you are just starting to follow along the first blog posts are archived.
To follow along go to: www.ourhouseinthekeys.com
If you know of someone who is interested in construction, coastal construction, the Florida Keys, etc. please forward this information.

This is the old topic but I wander if anyone can approximately estimate what would be extra cost for ICF roof, as in the spec below, comparing to the regular one?
https://www.dropbox.com/s/g9r2gare9...9.pdf?dl=0

Rule of thumb or InsulDeck is $15 / sqft turnkey. Complexity and locality will impact that.

You can also send the plans to InsulDeck and they will give you a quote.