Submitted drawings for a garage to the city planning office and there was some confusion about how I needed to meet fire rating EI30.
From the inside I've seen:
- 13 mm plasterboard
- 11 mm OSB
- 45 mm mineral wool
- vapor barrier
- 95 mm mineral wool
- wind barrier
- battens
- wood panel
The question that arose was if it needed double plasterboards or if plasterboard + OSB was sufficient.
Anyone know?
/Dea
From the inside I've seen:
- 13 mm plasterboard
- 11 mm OSB
- 45 mm mineral wool
- vapor barrier
- 95 mm mineral wool
- wind barrier
- battens
- wood panel
The question that arose was if it needed double plasterboards or if plasterboard + OSB was sufficient.
Anyone know?
/Dea
The class on the wall should be rei 30. Since it is likely load-bearing. The wall probably meets the fire requirement, but to be sure, check the product sheet for the OSB to see if it meets Ei 15, then you're good!
Don't know. My gut feeling says it should be enough.
To be sure, check the OSB or look at Paroc, Isover, Gyproc's websites, they have facade types with fire ratings.
To be sure, check the OSB or look at Paroc, Isover, Gyproc's websites, they have facade types with fire ratings.
It's more than enough! They should be aware of that at the city planning office, I think. Generally speaking, it doesn't matter if the board is gypsum or OSB; it depends on the thickness. The OSB board in your wall is not needed to achieve EI30.
See example in the wood guide:
http://www.traguiden.se/TGtemplates/popup1spalt.aspx?id=1406
See example in the wood guide:
http://www.traguiden.se/TGtemplates/popup1spalt.aspx?id=1406
Do you want to clarify which wall you think demonstrates that eir 30 clearly without osb?
Hence my question
You do have a point there, I didn't think of that...
However, I believe that the fire load is assumed to be on the inside of the wall, so the outside shouldn't matter in this context. That's what I think, anyway.
When I was getting the final certificate for my garage where I had built an apartment in the loft, the requirement was EI30 and I installed tongue and groove boards and drywall on the garage ceiling instead of the dual drywall indicated in the construction drawings. The municipality's officer noted this, but after contacting the head of the municipality's fire department, it was determined that it was the same classification as dual drywall. Since 1/3 of the garage is open to the peak, there is also an EI30 wall between the apartment/garage. It has 12mm plywood+13 drywall on the garage side and plywood+horizontal ship lap panel 15*120. These variants also had the same classification as dual drywall.
What is the reason for requiring EI30? If it has to do with the distance to another building, then it might make a difference that you have a weather barrier instead of exterior drywall, but OSB+drywall on the inside shouldn't affect the classification.
However, I believe that the fire load is assumed to be on the inside of the wall, so the outside shouldn't matter in this context. That's what I think, anyway.
When I was getting the final certificate for my garage where I had built an apartment in the loft, the requirement was EI30 and I installed tongue and groove boards and drywall on the garage ceiling instead of the dual drywall indicated in the construction drawings. The municipality's officer noted this, but after contacting the head of the municipality's fire department, it was determined that it was the same classification as dual drywall. Since 1/3 of the garage is open to the peak, there is also an EI30 wall between the apartment/garage. It has 12mm plywood+13 drywall on the garage side and plywood+horizontal ship lap panel 15*120. These variants also had the same classification as dual drywall.
What is the reason for requiring EI30? If it has to do with the distance to another building, then it might make a difference that you have a weather barrier instead of exterior drywall, but OSB+drywall on the inside shouldn't affect the classification.
EI30 was required if the garage was closer to the wall of the house with windows than 8 meters. They haven't said no to my solution meeting EI30, but they couldn't say yes to a direct question either....
To be safe, I have prepared new drawings with OSB + double gypsum on the inside if single gypsum would not be approved (I have made a full 3D model in SketchUp so it didn't take many minutes to generate new drawings
).
/Dea
To be safe, I have prepared new drawings with OSB + double gypsum on the inside if single gypsum would not be approved (I have made a full 3D model in SketchUp so it didn't take many minutes to generate new drawings
)./Dea
HiT Tbr53 said:
The thread is indeed from 2015 but quite correctly formulated, the requirement also applies to premises with permanent activities I recall, however, it probably does not apply to garages
I am attempting to revive this old thread as I need to create a fire safety documentation with fire rating requirements EI30.
I have constructed my Attefall house as follows (from the inside):
14mm wood panel - Vapor barrier - 95mm Wood fiber insulation - Wind protection - 45mm plank timber.
Do my walls meet the EI30 requirements, or what would you advise me to do?
Thanks in advance
I have constructed my Attefall house as follows (from the inside):
14mm wood panel - Vapor barrier - 95mm Wood fiber insulation - Wind protection - 45mm plank timber.
Do my walls meet the EI30 requirements, or what would you advise me to do?
Thanks in advance
Last edited:
https://www.traguiden.se/om-tra/byg...rakonstruktioner/avskiljande-formaga/exempel/J JPL70 said:I am attempting to revive this old thread because I need to create a fire protection documentation with a fire rating requirement of EI30.
I have built in the following way in my small house (from the inside):
14mm wood paneling - Vapor barrier - 95mm wood fiber insulation - Wind protection - 45mm plank timber.
Do my walls meet the EI30 requirements, or what do you recommend I do?
Thank you in advance
