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Unread 08-06-2022, 11:20 AM   #1
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Join Date: Aug 2022
Location: Vancouver BC
Posts: 2
plywood orientation to joists

Hi, Im renovating a kitchen/powder room in a 1912 heritage house.
the area were renovating is the old kitchen area (170 sq.ft) and a newer addition added in the 90s (160 sq.ft)
The old part of the house settled over the years (2 1/2" over 16') so we did some floor leveling by cutting the joists to create a level floor.
The newer part of the house only had to be cut down 1 1/2".
As per the engineers instructions we sistered the joists in the old part with LVL material. The new part didnt need sistering as the joist were cut to 8" with a 9' span.

the newer addition joists run perpendicular to the old part of the house, to keep the continuity of the subfloor layout we ran it all the same way, so the newer section doesnt have plywood running perpendicular to the joists.
the plywood is glued/screwed and nailed with .131 nails.

MY QUESTION: will this pose a deflection problem where the plywood runs parallel with the joists?

addtionally we will be using a schluter membrane for uncoupling.

hope this makes sense

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