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Cake day: July 18th, 2023

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  • Behind the green board, behind the OSB, there is a very thick top plate that those beams are sitting on and based on what the OP said to me, that is then framed down to a sill plate also behind the OSB. Nothing on the outside of the OSB is structural and he’s actually screwing those 6x6 cm boards into what’s behind the OSB. They’re using the OSB as a vapor barrier instead of faced insulation like we do and also protecting the studs with that vapor barrier from the interior of the house.

    Edit: Truth is, what’s funny about OP’s wall and the response it’s getting is that it’s better constructed than most American buildings you could find. We don’t tend to put as big a gap between the vapor barrier and the interior heated space and we don’t tend to include the studs as protected by that vapor barrier. When we do we use plastic sheeting, not OSB, because that’s too expensive. I’d imagine the R value on his insulation is also much higher than ours.




  • So are the 6x6s attaching just into the plywood or are they going into something behind the plywood? Overall it sounds fine what he told you to do, but what they’re attaching to and how you do what we call “blocking” to secure them is how you determine if you can hang cabinets.

    Edit: Per your additional information, what you’re doing is fine but I’d ask him specifically about where you want to hang cabinets because you’d need to make more consideration. They put a lot more strain than thin drywall to the fasteners that are holding them up.


  • Yeah, folks are having a hard time wrapping their head around how it structurally works but it obviously does since they’re building housing developments with it. The picture just shows the sill plate and top plate (the two thick pieces of wood on the top and bottom of the wall behind the OSB[what we call the plywood on the inside]) with insulation sandwiched between, but there has to be lengths of wood going from those to hold them together (which we call studs). They’re mistakenly thinking that your 6x6 cm pieces of wood are those studs.