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Figuring out roof support: choosing between rafters and trusses

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yogi59
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(@yogi59)
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"Trusses, while quick and cost-effective upfront, can seriously box you into a corner if your plans change (and trust me, they always do...)."

Fair points, but I'd argue trusses aren't always as limiting as they're made out to be. A few things to consider:

- Sure, rafters give flexibility, but modifying them down the line isn't exactly cheap or easy either—seen plenty of DIY nightmares where homeowners underestimated the structural complexity.
- Trusses, if planned properly from the start, can include attic space or allowances for basic ventilation and lighting. Not always as rigid as people think.
- Also worth mentioning: trusses usually mean quicker install and fewer onsite errors. Less room for contractor mishaps (and trust me, I've seen my share...).

Bottom line, both have pros and cons. Rafters aren't automatically the safer bet; depends on your long-term vision and how realistic you are about future changes.


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(@adamgreen462)
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Good points overall. One thing I'd add is that trusses aren't necessarily a deal-breaker for future flexibility if you think ahead a bit. I've worked on a few green roofing projects where we successfully integrated trusses with allowances for skylights, ventilation, and even rooftop gardens. It just takes careful planning upfront—something that's true whether you're using rafters or trusses.

"Trusses, if planned properly from the start, can include attic space or allowances for basic ventilation and lighting."

Exactly this. A lot of homeowners assume trusses mean zero attic or storage space, but that's not always the case. You can specify attic trusses designed specifically to accommodate usable space, insulation upgrades, or even solar panel mounts down the line.

Not saying rafters don't have their place—they definitely do—but it's not always as black-and-white as people make it out to be. In my experience, the key is knowing your long-term goals clearly enough upfront...but hey, easier said than done sometimes.


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(@wafflesm46)
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Good insights here. I've worked on plenty of roofs using both methods, and honestly, I think homeowners sometimes overestimate how much flexibility they'll really need down the road. Sure, attic trusses can be great for storage or future upgrades, but I've also seen people pay extra for attic trusses and never end up using that space at all.

One thing that hasn't come up yet is cost—rafters can sometimes be pricier in terms of labor and materials, especially if you're going for a complicated design. Trusses often save money upfront, but then again, if you have to customize heavily for skylights or ventilation, that cost advantage shrinks pretty quick.

Curious if anyone's had experience retrofitting trusses later on for something like solar panels or skylights? I've done it a few times, and while doable, it definitely wasn't as straightforward as planning it from the start...


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guitarist83
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Totally agree about retrofitting trusses—it's doable but usually a pain. Had a customer last year who wanted skylights after the fact... ended up costing him way more than if he'd just planned rafters from day one. Sometimes cheaper upfront isn't always cheaper long-term.


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drakewhite30
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Yeah, retrofitting trusses can definitely turn into a headache. When we redid our attic space a couple years back, we thought we'd save money by going with trusses initially. But then my wife decided she wanted a loft-style room up there... and suddenly we were looking at major structural changes and extra costs. Rafters would've given us way more flexibility from the start. Lesson learned—sometimes spending a bit more upfront saves you from bigger headaches down the road.


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