Corner Windows in ICF: Why It's Better Than Wood Framing
ฝัง
- เผยแพร่เมื่อ 19 ต.ค. 2024
- Corner windows are amazing! We run through the physics of how they work, the support you need to accomplish the task and why ICF is the best way to achieve it. As always, the debate is between wood framing and ICF. The main point is that ICF can achieve any design or architectural feature with no compromise in insulation value. All the safety, all the efficiency, all in one process!
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I'm Kody Horvey, owner of Up To Kode; a full service carpentry, contracting and consulting company that proudly serves Red Deer and all of Central Alberta.
We are committed to being Central Alberta’s most sustainable and energy efficient builder with a strong focus on quality and innovation.
Our vision is to continually implement and increase the use of high efficient building practices and products to create sustainable, multi generation structures.
Here on TH-cam, we hope to share our work, get you inspired, and give you the knowledge to plan and execute your own projects.
Questions? Just ask! Email kody@uptokode.com
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My gripe with ICF is that you can't seem to really have a lot of windows like you can with other build types. It's the only thing holding me back. I'd like a full 20ft wall with windows making up 90%-ish of the wall (think luxury cabins in the ski resort mountains). Every ICF build I see has sparse windows in comparison to normal homes. I love every single thing about it besides this drawback.
Where have you heard that? There are videos of buildings made of ICF that look like office/full glass buildings. Yes you don't want the entire house to be glass, but what you want is feasible as long as the room is sized right.
I’m not sure where you got the window limitation from? An engineer can design almost any length of concrete lintel/header. The factors are load, depth of beam and the length. If you are not limited to the depth of beam then the length can be significant. We offset the 2nd floor of a house… the beams were part of the wall… they were 54” deep and able to support the 2nd floor over a 20 ft span.
I’m glad you commented on this. Our friend had a great question… hopefully we can reset his ill-belief.
@@uptokode I appreciate your reply. I suppose I am just a victim of confirmation bias from seeing every ICF building with a limited # of windows. Same thing with the vast majority of pole barns. It sounds like I just need to speak with a structural engineer.
@getstuk87 Definitely chat with an engineer… just make sure they don’t spaz when they hear ICF. It’s a simple concrete header which I’m sure is like grade 1 or 2 in the engineering world. Haha.
We are working with a Structural Engineer right now to build a 2 storey ICF house and they have given us a much less flexible design because of what they say you can’t do with ICF. This video is an eye opener. How do I get ahold of your Enginneri?
That’s crazy! Any engineer should know the simple calculations for structural concrete. It doesn’t matter if there’s foam on either side. At the end of the day it’s a concrete wall. I have more videos coming up on this house which show more architectural elements that is possible with ICF. For example, the 2nd floor is holding itself up on columns. All with a 6” wall!! Follow us on Instagram to see more. @uptokode. And yes my engineer...just email me and I’ll send you his info. Kody@uptokode.com.
That looks like a great quality build. I'm sure the team working on it is learning alot.
It has been great. It’s my crew doing it. Definitely the most technical build to date but it’s been fun.
What do you use for the window bucks?
where is this house? I'm local to you I've seen your trucks around town but never knew you had a youtube channel. you got yourself a new subscriber.
This house is west of Bowden. Glad to have a new subscriber!! Thank you and definitely reach out to me directly if you ever have questions
Hi Kody, do you remember what uniform distribution loads called for those windows?
I have no idea. Sorry.
I would love to see more about this build progress if at all possible.
Follow me on Instagram! @uptokode
I was told that windows need 2 feet on the side or a metal pole will need to be placed in the corner. I don't see this for your corner windows. Is that because of the window buck used?
The structure is in the rebar and concrete above. The lintel or header is 2x longer than the opening length. It’s called a cantilevered lintel. I don’t think I would ever trust wood for this task.
I was going to ask what the square holes where on the bottom side of your window buck. Then I struck me it must be to pour to concrete into. doh
How thick is your OSB for the buck? 22mm? Do you leave the OSB in place after the pour and use as a wooden fixing point. if so do you use wood screw or do you attach straight through into the concrete to fix the windows. Thanks, great videos
Yes it’s to pour the bottom of the windows. The buck is 1.25 inch. We leave it in place. It has a sill gasket between it and the concrete.
For Windows we shingle nail directly into the buck. Keep it simple.
Hey! Do you know or have any experience with cantilevering a Floor system out? Looking at a house plan and it has one as a porch, was thinking to not loose any r value or make sure there was no thermal bridging use zip-r for under floor trusses.
I don’t have tons of experience. But any floor that is cantilevered is an issue for insulating and thermal bridging.
Can you explain how you flash around a ICF window that has a wood buck. Do you seal the entire exterior with peel and stick. What do you do to catch and divert water that is forced through the ICF foam to the inner concrete layer and runs down the concrete behind the foam.
Sorry I didn’t see this ! Let me know if you still want an answer
You ever do Concrete roof poured roofs and if so can you show how
I know guys who are trying to develop that system. Far more complex than you would first think. If I ever do one I will surely make a video about it.
Thanks again for the amazing videos. Planning out my home and trying to see if I can fit a corner window 18" below the corner of a load bearing and non load bearing wall. Also you do not address this question but when doing your footings for an icf house like Nudura do you make sure to insulate the footings? If not would that not be a thermal bridge in the concrete from the ground up to into the wall?
Thanks ahead of time for the reply! :)
An engineer who doesn’t get confused with the wall being ICF (you would be surprised how many over complicate it), and engineers a concrete lintel, should have no issues running the math.
As for the footings. Yes technically you’re right. It’s getting into the fine details. You can use HS40 or HS60 between the top of the footing and the bottom of the ICF wall to create that thermal break.
I’ve never worried about it because I install sheet foam on top of my footing and connect it to the wall foam. It still has that small amount of bridging through the concrete but the ground is below frost and not that cold.
Still 100,000 times better than conventional construction.
@@uptokode can you explain what you mean by adding sheet foam on top of the footing? My guess is that you add sheet foam the over the cement of the footing on the outside part (not the part under the future slab), but you do not pass it so that the moisture can easily make it to the drain? Thanks again!
Great video! Can you have 3/4 length or floor-to-ceiling windows with ICF?
Yes absolutely. As long as you have a header at the top somewhere. In a basement or lower floors below the roof, you can go full height because the “header” location can be the same elevation as the floor. If that makes sense.
So if I understand this correctly you can span a 6’ opening with a 14” lintel? Big kitchen window
For a cantilever lintel yes. The general rule is the lintel needs to be 2 times the length of window span. If that wording makes sense. 14’ should be lots for a 6’ window. Always get an engineer to verify especially on something custom like this.
At 6:44 the exterior shot shows all the Nudura horizontal seems with 1x4 Arron the whole house. Do you do this on all your nudura
We use a lot of 1x4 but not to this extent. As allways beautiful work from an industry leader. Mike
Thanks Mike! The 1x4 were installed as the client wanted vertical metal exterior. That’s the reasoning.
Does that translate into cost savings if you want to have large picture windows in your home?
Is there any issues to worry about with a cold joint in the concrete because of different pour days?
Great question and it all depends. Structurally as long as you have rebar or dowels from one pour and tied into the next pour, then you are good. At this house there were areas where we couldn’t pour any higher at one time so we would have the cold joint in the centre of a header which would be in the neutral zone for force. Engineer was okay with the idea.
I do avoid having cold joints near walkout basements where the final grade will be just to avoid any potential issues of water ingress.
And don’t let anyone tell you an ICF house doesn’t need building paper. They certainly do in order to have a drainage plane behind the siding. A cold joint is an area where water can enter if major water gets behind the siding. This situations are rare but water is a bugger and if you skip steps it will catch up to you, even with an ICF home.
Kody Horvey Thanks for the reply, I was the GC for our current house build. The company I contracted to do do the ICF agreed to have me help with the crew which was a huge learning experience but also helped with regards to addressing any issues as they happened.
I would certainly consider doing ICF right to the roof next time.
Is it possible to do this where the open to above area is 20 feet heigh?
Not sure if I understand. The height of the window can be anything. What really matters is what is the roof load that sits on the lintel (header) and what is the span of it? As long as the lintel can hold the roof load, anything is possible.
What's any ICF down sides?
I’ve heard that rodents can be an issue. I’ve never had a problem in 10 years but I could see how it could happen.
I always run my parging 12” below grade to minimize exposure
It is a challenge to find architects and builders who know the business and put together exactly what you want. We have to remember that the structure is not for a few years but rather for a few lifetimes. Where I live Mold is an issue. Designers and builders need to address the mold issue. No one wants to grow mold in their damp shower/tub.
It’s like any industry, there’s some people who excel at their jobs and other who do just enough to get by. It’s up to ourselves to do our homework, ask good questions, and find the people who are great.
Do you remember the window manufacturer? @uptokode
Windows will be Lux from Calgary, Alberta
How could one get in contact with you?
Facebook, Instagram or check out my website.
www.uptokode.ca.
Ya eh
Why would anyone post a video and use trade specific abbreviations without saying what the heck that are talking about. What is ICF? I shouldn't have to Google this!!!
Commonly known as "Insulated Concrete Forms"
@@mancinidesignbuild Thank you for the education.
Scott Hutson you’re not going to learn all there is to know about this building type in one 8 minute video, so why wouldn’t you google it?