Originally Posted by Username
Hey Brain and Nestor,
Just a question about that, is it with in code? Is this an acceptable repair if I were to have it inspected later on? This was actually the method I was considering, but was not sure if it was acceptable. Thanks.
I'm not a building contractor, but I don't think this kind of a repair would "meet the code". But, that's not because it's not a good repair; it's because it's not until relatively recently that we've had glues that could be applied in the field that would form a bond as strong as the original wood. So, as in so many other cases, good ways of doing things don't meet the building code because the building code doesn't keep up with technology.
Your floor joists were sized with a significant safety factor built in so that your house doesn't collapse if you drill a hole or cut a notch into a joist. The damaged joist would still be plenty strong enough to support the weight that it will be required to carry even without your doing anything. But, I would go ahead and glue that shim in because by glueing it in rather than simply nailing a shim into place to avoid height problems on the floor, you make that piece
you put in STRUCTURAL. That is, it helps support the weight of the floor. And, that, in my books is better than simply nailing a shim into place.
I have a background in engineering. I graduated from the U of Manitoba in Mechanical Engineering in 1978. You CAN add wood to a joist to make it stronger, and the only requirements are:
1. The wood you add is as strong or stronger than the wood the joist is made of, and
2. The glue joint is as strong or stronger than the wood the joist is made of.
By doing that, neither the wood you add nor the glue bond holding that wood in place will be the weakest link in the chain. The joist wood will break or crack before the added wood will because both that new wood and that glue are stonger. It's only within the past 10 years or so, however, that super strong construction adhesives like LePage's PL Premium that will form a bond stronger than the original wood, and can be applied in the field, have been available.
Anyhow, no building inspector is going to smile on that repair because I think he'd want you to sister that part of the joist. However, he'd realize that by glueing a piece of clear fir (or even hardwood) in with PL Premium to replace the rotted wood, the joist should be as strong or stronger than it was before the wood rot occured. So, I'd do it in my own building.