Hi, I recently purchased a timber frame home, and I noticed the sips shingle ridging exactly as your pictures in the video show. At this point the house is 13 years old. Should I be concerned? There are no leaks, but the ridging is not just on the north side of the roof. It is in upstate NY and it gets very cold and very hot. The house was a winter build. I'm very concerned. Thank you, Rick
If a SIPs panel roof with Zip System coating on exterior side and seams properly taped off… then shingle underlayment such as Skarkskin material then shingled… do you think you would still get the Sips Shingle Ridging? My guess is no you wouldn’t. Thoughts?
Seeing how the intermediate foam is "an engineerd material", mass produced in a factory, it seems a missed opportunity that the designers of SIPS did not include breather-holes/channels just below the outer OSB-skin. A vented over-roof seems like a hacky after-thought.
I completely disagree. A vented over roof is simply a roof-top version of a rain screen behind siding. Air movement is simply good engineering. Squishing everything together and trusting that is is now and forever will be completely water and vapor-proof is the half-baked solution.
@@spencer476 I never disagreed with the air-movement part. The insistence on doing it in the traditional manual laborious masochistic way is my peeve. If you are going to the trouble of engineering it, don't engineer it half-assedly - do a complete job, inclusive of the second layer and air-movement channels. Don't build "a better horse", build a damn EV instead.
@@AdityaMehendale The structural part of structural insulated panel prevents something under the skin. Both skins must be tightly bound to the underlying foam. Additionally, the recommendation for an air gap was really in the context of a retrofit, although I personally would do it on new construction as well. My point is there is nothing half-assed about it. Providing a path for water vapor to move through a wall is in fact very sound engineering and building science. Now, it is fair to point out that a second skin outside of the structural layer could be added by the panel manufacturer, however that would add significant additional weight and is not needed in applications where the gap created by another substrate, like siding or standing seam metal roof.
I think this is more of a case of misinformation and having a builder not familiar with constructing sips. In all instances in this video, even the details, there is joint tape missing. This is something that is typically recommended by SIP manufactureres that help prevent this condition from occuring. This also seems to bee a poor argument as the SIPs are using OSB which is typically used in other roof conditions, therefore this could happen with other forms of roof construciton as well. I would have thought a national publication with high standards right in the name would provide all the facts for something like this and not only one side of the arguement.
I do not agree with this mans cause of roof failure. Go look at the photos of the roof system. It looks like not even a 3/12 pitch on roof! If I was designing a roof for alaska, I would have at least a 4/12 pitch roof. I have built and assembled using SIPS. Condensation comes from not changing the air circulation properly, with a tight built home. You must have a sytem to exchange air using some outside air to mix with inside air. I belive from looking at the failure of this roof system, the main issue was not incorporating a proper pitch of roof to not only cause the water, snow, ice forming to drain in a more vertical diection. Dealing with also composition roofing, you must have a minium required roof pitch incorporated to ensure a dry roof. How this man does not touch on the shallow roof design, is beyound my understanding? If you have built houses, you know thru experience, in using composition roofing shingles, you must have at least a 3/12 pitch with, preferably a 4/12 pitch!
Just asking for clarification. As a builder I understand tile overlap in different climates needs to change but I do not appreciate as yet how changing the pitch affects egress of moisture from a warm environment. I assumed that the true cause is incorrect installation of a HVAC system as this should filter the moisture out of the house. The air inside should not be moisture loaded.
so lovely listening to Kohta. no BS and always straight to the point
Does the HVAC installation not remove the moisture from the air. Does this mean that the HVAC system was faulty or not to standard.
Hi, I recently purchased a timber frame home, and I noticed the sips shingle ridging exactly as your pictures in the video show. At this point the house is 13 years old. Should I be concerned? There are no leaks, but the ridging is not just on the north side of the roof. It is in upstate NY and it gets very cold and very hot. The house was a winter build. I'm very concerned.
Thank you,
Rick
I think you need a retro fit roof like he noted at the end of the video.
If a SIPs panel roof with Zip System coating on exterior side and seams properly taped off… then shingle underlayment such as Skarkskin material then shingled… do you think you would still get the Sips Shingle Ridging? My guess is no you wouldn’t. Thoughts?
So what was done to repair the roof in Alaska? I have viewed other videos on roof failure with SIPS. Seems to be a common problem.
Any other comments for "Kohta Ueno from the Building Science Corporation" would be very interesting as we all know "the devil is in the detail".
Seeing how the intermediate foam is "an engineerd material", mass produced in a factory, it seems a missed opportunity that the designers of SIPS did not include breather-holes/channels just below the outer OSB-skin. A vented over-roof seems like a hacky after-thought.
I completely disagree. A vented over roof is simply a roof-top version of a rain screen behind siding. Air movement is simply good engineering. Squishing everything together and trusting that is is now and forever will be completely water and vapor-proof is the half-baked solution.
@@spencer476 I never disagreed with the air-movement part. The insistence on doing it in the traditional manual laborious masochistic way is my peeve. If you are going to the trouble of engineering it, don't engineer it half-assedly - do a complete job, inclusive of the second layer and air-movement channels. Don't build "a better horse", build a damn EV instead.
@@AdityaMehendale The structural part of structural insulated panel prevents something under the skin. Both skins must be tightly bound to the underlying foam. Additionally, the recommendation for an air gap was really in the context of a retrofit, although I personally would do it on new construction as well. My point is there is nothing half-assed about it. Providing a path for water vapor to move through a wall is in fact very sound engineering and building science. Now, it is fair to point out that a second skin outside of the structural layer could be added by the panel manufacturer, however that would add significant additional weight and is not needed in applications where the gap created by another substrate, like siding or standing seam metal roof.
So basically use SIPS for walls and use trusses or whatnot for roof. Or, hope for the best, spend more and do an additional roof on top of the panels.
I think this is more of a case of misinformation and having a builder not familiar with constructing sips. In all instances in this video, even the details, there is joint tape missing. This is something that is typically recommended by SIP manufactureres that help prevent this condition from occuring. This also seems to bee a poor argument as the SIPs are using OSB which is typically used in other roof conditions, therefore this could happen with other forms of roof construciton as well. I would have thought a national publication with high standards right in the name would provide all the facts for something like this and not only one side of the arguement.
I do not agree with this mans cause of roof failure. Go look at the photos of the roof system. It looks like not even a 3/12 pitch on roof! If I was designing a roof for alaska, I would have at least a 4/12 pitch roof. I have built and assembled using SIPS. Condensation comes from not changing the air circulation properly, with a tight built home. You must have a sytem to exchange air using some outside air to mix with inside air. I belive from looking at the failure of this roof system, the main issue was not incorporating a proper pitch of roof to not only cause the water, snow, ice forming to drain in a more vertical diection. Dealing with also composition roofing, you must have a minium required roof pitch incorporated to ensure a dry roof. How this man does not touch on the shallow roof design, is beyound my understanding? If you have built houses, you know thru experience, in using composition roofing shingles, you must have at least a 3/12 pitch with, preferably a 4/12 pitch!
Just asking for clarification. As a builder I understand tile overlap in different climates needs to change but I do not appreciate as yet how changing the pitch affects egress of moisture from a warm environment. I assumed that the true cause is incorrect installation of a HVAC system as this should filter the moisture out of the house. The air inside should not be moisture loaded.