Hello. I've got some pretty good pictures to detail what I'm explaining. My back deck had a hot tub when I bought the house, they placed it about 2 inches away from the wall. Leaves gathered behind it all the time and got wet. I tried to keep it clean but hard to get back there and got a bit lazy. At one point about 5 years ago had some carpenter ants try to move in, but I got on that quick, cleaned out and treated/killed them myself and had it looked at by exterminator and he saw no problems. I get quarterly treatment and checks.
Anyways, during a bunch of other work, the tub was so old etc. I took a sawsall and just cut it into pieces and trashed it. During this process noticed some damage to the siding at the base behind the tub. The siding is rotted, pulled away and began digging into the rim joist. On the outer side there is dry rot for about 4 feet in length, at one point all the way through to see the sill, and some of the flooring dry rotted on the outer edge above the rim joist. Checked in the crawlspace, floor joists are fine, and felt and poked around the sill, it seems fine. The flooring under the house is not rotted or warped, a little dark stained from the water but seems ok other than the edge on the outside. Could this be supported by sistering support flooring between the floor joists? I don't want to tear up carpet etc. that''s all only about a year old.
There is no visible settling of the floor/house, no cracks, etc., mainly because the damage is pretty much right in the middle of the wall so plenty of good rim joist on both sides. There are no signs of termites or termite damage, but will have the exterminator verify.
So searching around I'm thinking from different things I've seem that a contractor should be able to cut out the damaged portion of the rim joist and replace it, and then sister it to about 3 floor joists with sister supports on the floor joists and using bolts and metal corner brackets on the rim joint and sisters.
Looking at the pictures, does this seem viable, and I wonder what an estimate would be? Thanks.
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