MGO SIP nightmare help pls.
Last Post 11 May 2022 03:16 PM by cmkavala. 50 Replies.
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AlbertamikeUser is Offline
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26 Aug 2020 03:35 AM
It's a slow process. and more bad news. The panel manufacture is MagPro and Titan Wall from Alberta Canada. I just received notification from the Alberta GOV there is "NO" Certifications for there products registered that they could find. Fighting Alberta New Home Warranty now. The house is still cracking 20ft this past 3days as the nights get colder.
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26 Aug 2020 04:44 AM
thanks for your input i am late on my responses. there is only 2 LVLs supporting the center of the floor truss on the 2 ends furnace room and family room. the windows you are correct are just a nailer attached to the skin. there is a double 2x8 header top of wall above doors and windows not enough for the patio doors though, they are sagging 1/4in in the middle. doors fit bad and rub now. there is a double 2x8 stud at 4ft but on the stacked walls below grade ect. are offset so no proper point load to footing. the panels were sealed with calking supplied by Mag-Pro but because of panel movement expansion it has opened up. all the calking on the battens have pulled also. i tried recalking but failed a few days latter. the panels are absorbing moisture that my cheap meter cant read on the stud when exposed.
sebastianUser is Offline
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24 Jan 2022 06:49 PM
This thread began with a sad story and hopefully, the OP was able to find a decent solution. I am thankful that he shared this experience.

I was contemplating using some MGO boards (Exacor-Extreme Green by Huber Wood) for a 4 bedroom home but as a subfloor on joists only, since I am aware of all the humidity and water issues, plus the scary stories from Denmark when used for vertical and exterior sheathing.
It is pretty clear that MGO boards do not like water and humidity, and no matter how manufacturers spin their story, I would never use it as an exterior application (never mind structural) unless the seams are taped and all screws sealed as you would do with a Secureroc or Zip board. Plus I would it cover with a layer of Mento and cladding.
Despite manufacturers stating that their products do not release salts and corrode metal when wet or humid, it is hard to trust this product with exposure to water.

Anyway, I "tested" a sample of Exacor partially covering it with weather tape and then dipping one edge in 1 inch of water.
Although the product is well manufactured with a good coating on one side and feels very solid when dry, it absorbed water from the edges and screw holes within minutes.
It dried and went back to its original status (at least in appearance) even under the tape, in 24 hours and after 3 days of dipping in water.
I would use it in a bathroom subfloor and walls but that is as far as I would go with water and humidity on an MGO board.

It may be worth noticing that Huber Wood is not pushing the Exacor MGO board much for exterior applications, but mostly for subflooring.
Their board is supposed to be a good reliable product in terms of not releasing salts since it is based on Extreme Green board which is the largest and most proven Chinese manufacturer.
But I think I would not be able to trust for structural application a small manufacturer of SIP panels that may not source their MGO from a proven company.


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25 Jan 2022 04:36 PM
Personally, I wouldn't trust or use any SIP for any structural application, period. While modern adhesives are incredible, I wouldn't bet on them remaining so for 50 years much less centuries. So using SIPS that depend on long term adhesive strength in order to retain their structural strength is a risky bet I wouldn't personally entertain for any building that I own. I prefer time tested concrete, steel and wood structures.
Borst Engineering & Construction LLC - Competence, Integrity and Professionalism are integral to all that we do!
sebastianUser is Offline
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27 Jan 2022 02:26 PM
I agree, and would not use sips for the same reason unless there is already a framing structure in place. The only product I would contemplate using, although technically are not SIP panels, are the RADVA panels like Thermasteel or Green Stone. They are installed more or less like SIP panels, but they actually are prefabricated steel-framed walls with insulation blown in at the shop. Once installed with all their tracks and plates they are nothing different than a steel frame structure without most of the thermal bridges. Add steel joists with tracks and proper exterior sheathing and there you have a structure that will stand for a long time.
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27 Jan 2022 03:55 PM
Thanks Sebastian. Will take a look at those products. We have a pole barn project later this year and we will be looking for best way to accomplish it. Needs to be fire resistant, secure and relatively low cost given first two requirements.
Borst Engineering & Construction LLC - Competence, Integrity and Professionalism are integral to all that we do!
InnovaUser is Offline
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14 Mar 2022 05:09 PM
SIP has been used since the 1950's, more than $200 million a year and delamination is not a big problem in the industry. It is a non-occurrence with manufacturers using modern extrusion equipment and urethane adhesives. Airplane wings are glued together to reduce metal fatigue so I would not worry about delimitation if you are using a reputable manufacturer with modern equipment.
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18 Mar 2022 05:55 PM
Posted By sailawayrb on 25 Jan 2022 04:36 PM
Personally, I wouldn't trust or use any SIP for any structural application, period. While modern adhesives are incredible, I wouldn't bet on them remaining so for 50 years much less centuries. So using SIPS that depend on long term adhesive strength in order to retain their structural strength is a risky bet I wouldn't personally entertain for any building that I own. I prefer time tested concrete, steel and wood structures.



Interesting comment from the engineering arena,
adhesives have been used for years in plywood , LVLs, to hold rebar in drilled holes and currently used in our automobiles in lieu of welding
Chris Kavala<br>[email protected]<br>1-877-321-SIPS<br />
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19 Mar 2022 12:51 PM
There were lots of delamination failures with both plywood and LVLs when they first became available and there have been subsequent failures even in recent years because of bad manufacturing batches. So probably not the best example for adhesive longitivity. We only recommend SIPs for some limited roof designs or occasionally for wall assemblies for temporary short-term buildings. We don’t recommend SIPs for long-term commercial or residential wall assemblies. We don't recommend SIPs for damp or high humidity climates or where termites are problematic. We are not a SIP distributor.
Borst Engineering & Construction LLC - Competence, Integrity and Professionalism are integral to all that we do!
cmkavalaUser is Offline
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11 May 2022 03:14 PM
Posted By sailawayrb on 19 Mar 2022 12:51 PM
There were lots of delamination failures with both plywood and LVLs when they first became available and there have been subsequent failures even in recent years because of bad manufacturing batches. So probably not the best example for adhesive longitivity. We only recommend SIPs for some limited roof designs or occasionally for wall assemblies for temporary short-term buildings. We don’t recommend SIPs for long-term commercial or residential wall assemblies. We don't recommend SIPs for damp or high humidity climates or where termites are problematic. We are not a SIP distributor.



You just listed all the advantages of using galvalume steel SIPs,
besides homes, mainly used for cold storage and food processing facilities (High humidity environments)...there is a reason they are used, they simply out perform all other construction methods.
Termites (no food value there!) and they are UL certified green- "no off gassing"
Chris Kavala<br>[email protected]<br>1-877-321-SIPS<br />
cmkavalaUser is Offline
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11 May 2022 03:16 PM
www.permathermsips.com
Chris Kavala<br>[email protected]<br>1-877-321-SIPS<br />
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