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Thread: Fixing Truss
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Old 07-03-2021, 07:20 AM
MandoMan MandoMan is offline
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Originally Posted by thevillages2013 View Post
I see nails or screws penetrating that broken 2x4 coming from the other side that isn’t pictured
If there is something attached to the other side then just attach a 2x4 to the pictured side. Try to cut it to fit the top and go all the way to the bottom. Also take a hammer and tighten up the truss plates on the top before adding 2x4. If you want to bolt it you can but you would only be drawing attention to it. I would use 3” wood screws. That is yellow pine by the way if you want it to match. Wouldn’t hurt to grind off the points of those penetrating nails first to make it easier. Pick a cool morning for the job. Yes I have tons of experience building with trusses and I don’t mean watching someone else do the work. That is one reason my back is trash now
Instead of lag bolts or wood screws, I recommend Fasten Master HeadLOK Structural Screws. They are slim, but as strong as a 3/8” lag screw, and the recommended product for the past five years. They are expensive, but worth it. They are MUCH stronger than drywall screws. They come in a variety of lengths, including screws that will go through a “sister” on each side of the break. Available at Lowe’s or Home Depot. I recommend clamping the sisters to the king stud before screwing. https://www.lowes.com/pd/FastenMaste...-Count/3446730

However, as you noticed, the truss plate has come loose on one side (see photo). Look carefully and you’ll see that someone has tried to hammer it back into place already. But they don’t hammer! You can’t hammer them back in that way. In truss factories trusses are made in big forms, and there are pneumatic clamps that press those plates into place. Once they have popped loose, they won’t work. (Well, not with a hammer. You might be able to use a block of plywood and several big clamps and tighten them into place.) If I were doing the work myself, in my own home, I would use a foot square piece of 3/4” plywood. Trim the top to fit the roof slope, and nail it into place with at least a dozen 2 1/2” joist hanger nails—after removing the useless trust plate. This is called a gusset, I think, and they have been used for centuries.
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