I would like to frame a roof with I joist lumber, and I’m curious as to which product to use by which manufacturer. Can you, esteemed colleagues, please suggest some info to get me started in the right direction?
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Roof I-joist
Are you building an attic living space?
Several points to consider:
Load capacity, local requirements, length of rafters, rafter spacing, depth of rafter,connection method, insulation (type and R-value) you need airspace between insulation and underside of roof sheathing if you insulate between the rafters.; it dictates the depth of the rafters. If you insulate on top of the roofsheathing a different application comes into effect (furring, flashing details, roofpenetrations at chimney or ventpipes).
If you go I-joists best is to take the plan to the supplier/manufacturer. They will advise you regarding fasteners and connection details.
Manufacturer wise - they all have to comply with engineering data. I would select one which is closest to the jobsite
The framing details are pretty much the same across the board, so there's no advantage to using one manufacturer over another. So the best system to use is the one that's available in your area.
In my experience, I-joists that are 11 7/8" deep are usually stocked locally and are widely available. Anything else is special order and is much more expensive. But that might be different in your area.
Any place that sells the things should be able to come up with a framing system from your plans and tell you everything that ya need.