Depending on the style and slope of your home roof, you will likely have one or two of these structural elements integrated into your house. These structural components are all a little bit different, which we will explain in more detail soon, and yet they all share the same jobs: carrying the live and dead loads of your roof, supporting the walls of your home, preventing the walls of your home from spreading or racking shaking , and creating a space for ventilation and insulation.
No matter whether you have a sloped roof or a flat roof , you will need some sort of structural support to hold up the weight of the roofing materials you or your contractors choose, and to connect the walls of your home and prevent them from spreading or racking.
Our design calls for 24 foot spans with no load bearing walls between them. How long are your biggest spans? There are a lot of similarities between our project and yours. We love the blog! Wood I beam joist engineered of plywood and 2x4s Pros: Span longer distances than traditional joists, removing the need for walls in some areas. Lighter weight. Stronger than traditional joists. Wider nailing surface making the building process easier Cons: Not as readily available — they need to be special ordered.
Slightly more expensive than traditional floor joists. Need to drill for utilities. Floor truss Looks almost a wood web, connected with metal plates Pros: Designed to hold weight in longer spans, meaning less walls are necessary. The strongest option.
Spans the farthest distance without structural walls. No need to drill out for utilities. Wider nailing surface. Very customizable our trusses were designed and ordered to specifically account for the size of our house and the utilities and ductwork. For a given span length, a deeper truss will require less material in the chords and greater material in the verticals and diagonals. An optimum depth of the truss will maximize the efficiency.
Share this comparison:. If you read this far, you should follow us:. Diffen LLC, n. Joist vs. Russel, they do already. Contractors here just give then the plans and get back a quote for for an all custom set of trusses for the roof framing, engineering all done and a delivery schedule. Usually less than 21 days, some times less than 14, delivered to your site, anywhere Quebec, Ontario, New York, Vermont, etc. It's nice to see the difference between the two laid out.
I am about to start building a new house, and I have been trying to make all of these less noticeable decisions lately. I think it will help me to have this information when I talk to the contractor about what i want to do. Useful ideas! What's the reason you're reporting this blog entry? Trusses, Rafters What the Heck is the Difference?
One of the frequent questions I am asked is: what is the difference between trusses and rafters? Rafters Rafters are sloped framing members running downard from the peak of the roof all the way to the plates of the outside walls. Trusses Roof trusses are engineered and pre-fabricated, triangulated wood structures which are built in a factory.
Trusses come in many varieties. Two are shown below.
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