Roofing discussions and local services.

Figuring out roof support: choosing between rafters and trusses

648 replies
 

Join the conversation

Share your experience or ask a follow-up question.

joseph_echo5271

"Curious - did anyone run into permitting issues when making structural changes like that?"

Yeah, I've wondered about this too... seems like modifying trusses could open a whole can of worms with permits and inspections. Has anyone here actually had an inspector flag something like that? Or maybe had to get an engineer involved after the fact? I'd imagine that could get pricey pretty quick.


Reply
finance_waffles
finance_waffles Topic starter

Has anyone here actually had an inspector flag something like that? Or maybe had to get an engineer involved after the fact?

I've seen inspectors flag modified trusses a couple times, actually. Usually, the process goes something like this: inspector notices the modification during a routine check, then requires an engineer's stamp to verify structural integrity. At that point, you're looking at hiring a structural engineer to assess and possibly recommend reinforcements or corrections. It can definitely get pricey and time-consuming, especially if you have to redo work you've already completed. Better to get an engineer involved upfront if you're planning significant changes... saves headaches later.


Reply
mindfulness223

"Better to get an engineer involved upfront if you're planning significant changes... saves headaches later."

Yeah, definitely agree with this. I've seen inspectors get picky even over seemingly minor alterations - like cutting or drilling into trusses for wiring or plumbing. Had a buddy who thought he'd just notch a truss slightly for some ductwork, inspector caught it and he ended up shelling out quite a bit for an engineer's report and repairs. Makes me wonder how often these small modifications actually cause structural issues down the road...


Reply

I've wondered the same thing, honestly... like, are inspectors just being overly cautious or do those minor cuts and notches really add up over time? I get why trusses are engineered precisely - each part is carrying a specific load - but does shaving off a tiny bit here or there really compromise the whole roof system? Seems extreme.

Still, hearing your buddy's story makes me rethink my own plans. I was actually considering something similar to run some extra wiring through the attic. Maybe rafters would be easier to work around for future DIY projects? Or is that just trading one set of headaches for another? Guess there's no perfect solution when you're trying to balance structural integrity with practicality...


Reply

Yeah, I've had similar thoughts about inspectors being overly cautious, but honestly, those small cuts can add up quicker than you'd think. A buddy of mine did some minor trimming to fit ductwork through his trusses - nothing major, just a notch here and there - and ended up with noticeable sagging within a couple years. Rafters might give you more flexibility for DIY stuff later on, though they come with their own set of issues like needing interior load-bearing walls or beams. Always trade-offs, right?


Reply

That's a good point about the small cuts - people underestimate how quickly structural integrity can be compromised. I've seen similar issues firsthand, especially when homeowners try to retrofit HVAC or plumbing later on. Rafters do give you more wiggle room, but like you said, they come with their own headaches. Have you thought about using attic trusses instead? They cost a bit more upfront, but the built-in open space can save you from having to notch anything later...might be worth considering.


Reply

Attic trusses can definitely be handy, especially if you're looking to avoid the hassle of retrofitting later on. But honestly, I'm not totally sold on them for every situation. When we redid our roof a few years back, we considered attic trusses too, but ended up sticking with rafters. The main reason was flexibility - sure, attic trusses give you that nice open space in the middle, but they're still pretty restrictive around the edges and corners. If your layout or future plans aren't crystal clear yet (and ours definitely weren't), rafters can actually give you more freedom to adapt as you go.

I get what you're saying about structural integrity and small cuts, though. It's surprising how quickly things can weaken if you're not careful. But with rafters, if you're mindful about where and how you notch (and maybe get some professional advice beforehand), it's usually manageable. We had to run some new ductwork last year and ended up making a couple small notches - nothing major - but we reinforced carefully and haven't had any issues so far.

Another thing to think about is storage space. Attic trusses do give you a neat little room up there, but sometimes it feels like you're stuck with that exact shape and size forever. With rafters, we've been able to rearrange storage areas, add shelves, and even expand insulation more easily as our needs changed over time.

Not saying attic trusses aren't a solid option - they definitely have their perks - but just wanted to throw out another perspective based on my own experience. Every house is different, so it's worth weighing your priorities carefully before committing either way...


Reply

Good points there, especially about flexibility. I've inspected plenty of attics and honestly, attic trusses can feel a bit cookie-cutter sometimes. But on the flip side, rafters can turn into a DIY nightmare if someone gets a little too ambitious with the saw (trust me, I've seen some scary stuff...). Bottom line, either way works if done right - just make sure whoever's doing the cutting actually knows what they're doing.


Reply
steventhompson352

"rafters can turn into a DIY nightmare if someone gets a little too ambitious with the saw (trust me, I've seen some scary stuff...)"

Yeah, this hits home. Just bought my first place and the previous owner clearly had some DIY ambitions that went sideways - rafters cut at weird angles, random supports nailed in... total mess. I'm leaning toward trusses for simplicity, but curious: has anyone here successfully converted from rafters to trusses, or is that just asking for trouble?


Reply

Switching from rafters to trusses can definitely simplify things structurally, but it's not always a straightforward swap. I've seen it done successfully, but usually it involves some serious planning and sometimes even lifting off the whole roof (yeah, sounds fun, right?). If your current setup is already a mess, might be worth getting an engineer or experienced builder to eyeball it first - could save you from trading one DIY nightmare for another...


Reply

Yeah, switching from rafters to trusses can definitely be a bit of a beast. I've been on a couple jobs where we tackled that exact thing, and honestly, it was pretty intense. One time we had to crane off the entire roof section - felt like open-heart surgery on a house, haha. But you know what? Once those trusses were in place, everything else went so much smoother. The framing was quicker, the roofline straighter, and the inspector seemed way happier too.

You're totally right about getting someone experienced involved early though. I've seen homeowners dive into this thinking it's just swapping out one piece for another, only to realize halfway through they're in way over their heads. A buddy of mine tried it solo last summer - ended up calling us in after he'd already ripped half his roof apart. Not exactly ideal timing...

But hey, don't let that scare you off completely. If your current setup is already giving you headaches or you're worried about structural integrity down the line, making the switch could still be worth it. Just make sure you've got a solid plan first and maybe even get an engineer's stamp if you're unsure. It might feel like extra hassle now, but trust me - it's way better than dealing with sagging roofs or cracked drywall later on.

Either way, good luck with whatever route you choose. Roofing projects always seem daunting at first (believe me, I know), but once you're done and looking back at your handiwork...it's pretty satisfying stuff.


Reply
dcampbell60

- Good points made here, especially about involving an engineer early. I've done a similar switch myself, and here's what stood out to me:

- Trusses definitely simplify things once they're in place - straight rooflines, easier drywall installation, and fewer headaches with inspectors. But the upfront planning is crucial.

- One thing I'd add: consider your attic space carefully. Rafters usually give you more flexibility for storage or future conversions (like a loft or extra room). Trusses can limit that because of their internal webbing structure.

- Also, if you're dealing with an older home, double-check your wall framing and foundation. Trusses distribute weight differently than rafters, so you might need additional reinforcement or bracing. I had to beef up some load-bearing walls when I switched over - wasn't expecting that at first.

- Cost-wise, trusses can sometimes be cheaper overall due to quicker installation and less labor, but factor in crane rental and delivery logistics. Those hidden costs can sneak up on you.

- Bottom line: if structural integrity or sagging is already a concern, trusses are probably worth the hassle. Just don't underestimate the prep work involved...and definitely don't rip off your roof until you've got everything lined up (seen that happen too many times).


Reply
charlienaturalist4870

Good insights overall, but I'd hesitate to say trusses always simplify drywall installation. I've seen cases where the webbing actually made running electrical or HVAC lines trickier...depends on your layout and mechanical plans, so keep that in mind.


Reply

Fair point about the truss webbing complicating HVAC and electrical runs. I've been leaning towards trusses mainly for cost reasons, but now I'm wondering: does the potential hassle of routing utilities through trusses ever offset the initial savings? I've heard mixed experiences - some say it's manageable with careful planning, others regret not going with rafters. Curious if anyone's crunched actual numbers on the added labor or materials involved...


Reply
mythology_lucky

- Good points raised here - trusses definitely save upfront, but I've seen plenty of headaches down the line with utility runs.
- From experience, if your HVAC and electrical layout is straightforward, trusses aren't usually a huge deal. But the second you start needing complicated ductwork or multiple wiring paths...things get messy fast.
- Worked on a job last year where the homeowner insisted on trusses purely for budget reasons. We ended up spending extra days just figuring out how to snake everything through without compromising structural integrity. Labor costs jumped noticeably.
- Haven't personally crunched exact numbers side-by-side, but I'd say the savings from trusses can shrink pretty quickly once you factor in extra labor hours and materials like additional conduit or custom duct fittings.
- That said, careful planning does help a ton. If you map out your utility runs clearly before ordering trusses, you can usually minimize the hassle.
- Bottom line: trusses aren't always the bargain they seem, but they're manageable if you're proactive. Rafters give you flexibility, trusses give you savings - just gotta decide which matters more in your specific situation.


Reply

Been there myself. When we built our place, I was all about saving money, so trusses seemed like a no-brainer at first. Then reality hit when we started laying out the ductwork and wiring... let's just say my electrician wasn't my biggest fan for a few days.

It's true what you're saying - planning ahead helps a ton. But even with decent plans, we still ended up needing custom fittings and extra conduit runs to squeeze things through safely. By the time we factored in those extra labor hours and materials, the savings were definitely less impressive than I'd hoped.

Would rafters have been better? Honestly, I'm still skeptical either way. Rafters might've given us more flexibility, sure - but I've seen plenty of friends blow budgets going that route too. Guess there's no perfect solution - just pick your poison and keep some aspirin handy for the headaches either way...


Reply
running_echo

Yeah, sounds familiar... I've seen both setups plenty of times, and honestly, neither one's perfect. Trusses save cash upfront but can bite you later. Rafters offer flexibility but can spiral costs fast. Seems like you handled it pretty well, though - live and learn, right?


Reply
music_tyler1997

I've gotta say, I mostly agree with your take on rafters vs. trusses, but I'd push back just a little on the idea that trusses always "bite you later." Sure, they're less flexible down the road if you're planning major renovations or attic conversions, but honestly, most homeowners don't end up doing those big changes anyway. I've worked on plenty of roofs where the homeowner went with trusses and never regretted it - especially when budget was tight upfront.

On the flip side, rafters can be great if you know exactly what you want long-term. But I've seen more than a few projects spiral out of control because folks underestimated the labor and materials involved. Just last summer we did a reroof for a guy who insisted on rafters because he wanted an open attic space. Halfway through, he realized how much extra bracing and lumber he'd need to meet code... let's just say his wallet wasn't thrilled.

One thing I'd add is that engineered lumber options like LVLs or I-joists can sometimes bridge the gap between traditional rafters and trusses. They're pricier than standard dimensional lumber but offer some flexibility without going full custom-rafter crazy. Might be worth looking into if you're still weighing options.

Anyway, sounds like you've already navigated this pretty well yourself - like you said, live and learn. Just figured I'd toss in my two cents from experience... roofs are funny that way; every situation's a bit different.


Reply
echoa62

"Just last summer we did a reroof for a guy who insisted on rafters because he wanted an open attic space. Halfway through, he realized how much extra bracing and lumber he'd need to meet code... let's just say his wallet wasn't thrilled."

Ha, sounds familiar. When we redid our roof, I was dead set on rafters for the same reason - dreaming of that spacious attic storage. But once the quotes started rolling in, reality hit hard. Ended up going with trusses and honestly haven't regretted it yet. Sometimes practicality wins out over dreams of future renovations... especially when your bank account has the final say.


Reply
anthonysage888

"Ended up going with trusses and honestly haven't regretted it yet."

Yeah, trusses definitely have their advantages - especially when you're looking at budget and timeline. I worked on a project last year where the homeowner was convinced rafters were the only way to go. Halfway through framing, we hit a snag with local code requirements for extra bracing... ended up costing him way more than expected. Honestly, unless you're dead set on that open attic space, trusses usually come out ahead in terms of efficiency and cost-effectiveness.


Reply
Scroll to Top