A slab house with ICFs. two 2 x 6 PT plates around perimeter of slab. the top of the plate is flush with the slab. The walls are built on top of them.
What is the best method on how to fasten a 2 x 6 (8) ledger board for the deck?
Thanks
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Replies
another idea.........
Might be easier to build a free standing deck. Less chance for introducing rot to the house frame also.
Agreed
oldhand wrote:
Might be easier to build a free standing deck. Less chance for introducing rot to the house frame also.
Code where I used to live requires ledger be through-bolted (lag screws OK) to rim joist with no siding in between. Suitable flashing detail under siding above to cover ledger top.
Depending on clearance to finished grade at deck / structure I'd opt for free-standing on piers too to optimize drainage & air circulation at / around bottom of exterior wall.
too wierd for my experience...
In these parts a slab does not include any lumber at all. So no rim joist.
I suppose you could use a detail normal to a wood frame but for sure this is out of my realm.
As oldhand said, buld a freestanding deck. Much easier and no worries about the deck creating problems in the house. My engineer won't even draw a detail that shows a deck attached to a house anymore.
Wait, the ICF sits partialy on the slab, and partially on the 2x6? At Grade or above? How was that waterprooofed?
If the PT is secured to the slab with anchor bolts you can use joist hangers off of that. This assumes the slab has enough distribution to hold the ICF load. If the PT is not anchored, why is it there? Still, it is tricky to waterproof that detail. Any slab on grade with deck on grade attached to the house is.
Options
Freestanding would make a lot of sense here. DCA9-06 has great details (Google it). You could also attach a ledger to the house, but you'd either need an engineered connection because the code allows only 1/2 in. seperation between a ledger and framing or concrete. Alternatively, you could cut out the foam where the ledger will go so it can abut the concrete. Not sure how you'd waterproof that, though.