I will be building a deck off the back of my home this spring, approximately 12 x 20 in size. My rim joist on the house is a 2 x 8, I'd like to use 2 x 10 pt lumber for the floor joists because it can handle the 12 foot span without the need for support in the middle. A website I came across recommended NOT using a
2x10 ledger board because it will not make full contact with the rim joist and therefor leave a weak spot at the bottom of the ledger. The site suggested using a 2x8 ledger, and notch the bottom corner of the 2x10 deck floor joists to fit into a 2x8 hanger. Is this necessary? Or can I use a 2x10 ledger without comprimising the structure? Any ideas, suggestions, or advice would be greatly appreciated. By the way, I do not have enough clearance under the deck for a drop beam, so I can't cantilever the deck. Thanks!
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