I don’t see a lot of truss roofs. Have new construction and one of these trusses has pulled away from the roof sheathing. The trusses that I could see to the left and the gable wall immediately right were fine. There was a furnace below and to the right. There was no walkway at all so I was leaning awkwardly and didn’t get great pics.
Does this need an engineer? Do all available holes need to be filled with fasteners?
Can’t tell a lot from that picture but… There obviously shouldn’t be a gap between the sheathing and that “truss”. That is not a factory built truss and that plate is not sufficient for a site built truss imho. Depending on what else is going on with the roof structure and the home in general an engineer or a good framing contractor needs to look at that. I think there are multiple issues present.
I’m not sure. Never saw it before. Some kind of engineered product. This home was new construction but really was in quite poor condition in several areas. I may post some more stuff later. The roof itself has partial soffit venting (blocked by insulation) and two small gable vents. No ridge, box, powered, turbine vents, NOTHING.
That does look like T-111 used as sheathing. It also looks like they used way too many nails in one spot on the right and not enough nails on the left, but I can’t tell for sure how far of a span that picture shows, also nails were missing the “truss” behind the one in question.
Were more of the trusses/sheathing in this area in the same condition?
I don’t know that I would call for an engineer to look at this, but I would advise having a licensed contractor properly correct this issue.
Most truss failures are often attributed to one of the following: 1: Improper or lack of temporary/permanent bracing. 2: Incorrect loading or overloading during construction. 3: High winds during erection.
I suspect #2. Roofer overloaded the sheathing with material. Once the material was removed the chords elongated. Just a guess mind you.
Ok, heres my take. 1st, i believe it is a pre-built truss, factory, plant , somewhere but not likely on site. 2nd, based on the number of nails on the one side it look like they were trying to force the sheathing ( whatever the hell it is) down. This maybe due to a bow in the top chord, or it is mis aligned. I don’t believe it is a “failure” of the truss itself. Honestly though we are all speculating and most importantly it is a material failure and should be further evaluated by a competent contractor. IMHO
Ok here is my take, When trusses are built in a factory they are engineered and stress tested there is no way that this particular truss was built in a factory as they would not have used a nail on and undersized mending plate.
I went to high school in a town that had a LP plant and a GP plant. Almost everyone in the town worked for one or the other. If you were an employee, you could buy seconds by the bundle. T-11, T1-11, or plywood seconds for 250 a bundle. Same with stick lumber, 2x4, 2x6, 2x8, etc. Almost everyone in town had a house or barn built with these materials.