Joist should be doubled & replaced with 5″ x 2″ joists and doubled all around the frame. Joist hangers should also be utilized so your frame is not depending onscrews for structural stability. We have seen many decking projects ruined from having a full hot tub sitting on it over the ...
The 4 inch can is pictured below and it does not have a height adjustment mechanism, so we had to take into account the height of theceiling strappingprior to mounting. Notice that the can sits between the joists, and can move to within 1 inch of the joist, depending on which side the...