Figuring out roof support: choosing between rafters and trusses

I get where you’re coming from about thinking ahead, but I’ve seen folks overcomplicate things too. On one job, the owner insisted on all these custom trusses “just in case” he wanted to finish the attic later. Ended up never touching it, and the extra cost was just kind of wasted. I’m not saying don’t plan, but sometimes it feels like people pay for flexibility they never actually use. Did you end up running extra stuff through yours, or was it more peace of mind?

That’s exactly what I’ve seen too - people get sold on “future-proofing” and then never actually use the space or features they paid extra for. I get wanting options, but is it really worth the premium if you’re not 100% sure? I’ve always wondered if folks who go with trusses for possible attic conversions ever regret not just keeping it simple. Did you at least get any energy savings or better insulation out of those custom trusses, or was it strictly about maybe finishing the attic someday?

I hear you on the “future-proofing” hype. I went down that rabbit hole a few years back when we replaced our old roof. Got talked into beefier trusses “just in case” we wanted to finish the attic later. Spoiler: still haven’t touched it... but I will say, the extra space makes it way easier to run ductwork and stash insulation. We ended up putting in way more blown-in cellulose than our neighbors could fit, and our heating/cooling bills did drop a bit compared to before.

It wasn’t a huge difference, but it’s something. I do sometimes wonder if we overdid it, though - could’ve spent that money on better windows or something more immediately useful. Out of curiosity, has anyone tried incorporating green or “cool” roofing materials along with trusses or rafters? I keep reading about how reflective shingles or even living roofs can help with energy savings, but I haven’t seen many folks around here try it yet. Does the roof support type even matter much if you want to go that route?

Title: Figuring out roof support: choosing between rafters and trusses

We had a building where the owner swore by “future-proofing” - ended up with these monster trusses that could probably hold up a bowling alley. Never did add the extra floor, but when we swapped to reflective shingles last year, the extra support made it easy. Didn’t have to worry about weight or spacing. I’ve seen folks try living roofs on regular rafters, though, and that’s where things get dicey. Those setups need a ton of structural beef, especially if you’re in a snowy area. Honestly, sometimes I think people get a little wild with all the “green” upgrades without thinking about what’s actually holding it up...

Honestly, sometimes I think people get a little wild with all the “green” upgrades without thinking about what’s actually holding it up...

That hits home. I’ve got neighbors who went all-in on a green roof - looked amazing at first, but after one heavy winter, they were scrambling to reinforce the rafters. I get the appeal of future-proofing, though. When we re-roofed last year, I was grateful for the beefier trusses from a previous owner’s “overkill.” Sometimes it feels like overbuilding, but it sure comes in handy when you least expect it.

I’ve seen that happen too - folks get excited about green roofs or solar panels, but forget the old rafters underneath weren’t built for all that extra weight. My uncle’s place had a similar issue after he added solar; ended up with some nasty sagging. I’m curious, for those who’ve gone the truss route, did you notice any downsides? I’ve heard they can limit attic space, but maybe that’s not a big deal for everyone.

- Totally hear you on the attic space thing - trusses can seriously eat into it. If you’re hoping for a walkable attic or storage, they’re not ideal.
- That said, I’ve seen way fewer issues with sagging or shifting loads compared to stick-built rafters, especially when folks add solar or heavy stuff up top.
- On a couple jobs, we did get some weird drywall cracks below after trusses went in, but I think that was more about rushed installs than the trusses themselves.
- If you’re not using the attic much, the stability’s worth it. But yeah... if you want a big open attic, trusses can be a letdown.

I’ve seen trusses hold up better in high-wind areas - less shifting, fewer call-backs after storms. But yeah, you lose that open attic. If you’re in a spot with hail or heavy snow, I’d lean truss for peace of mind. Just make sure whoever installs them actually takes their time... rushed jobs always show up as cracks or squeaks later.

Trusses are definitely the safer bet if you’re anywhere that gets hammered by wind or snow. I’ve lived through a couple of those “hundred-year storms” and watched neighbors with stick-built rafters patching up cracks and chasing leaks, while my truss roof just sat there like it was bored. But yeah, you do lose that big open attic space - if you’re dreaming about a future bonus room or just want to be able to crawl around up there, it’s a trade-off.

Honestly, I’d rather have a solid roof than extra storage. I learned the hard way that a leaky attic is just a fancy way to ruin your holiday decorations. And whoever said rushed jobs cause problems is spot on... My first place had a roof put on in a weekend “special” and I swear every time the wind blew, the whole house creaked like it was haunted. Pay for good labor, not just good materials.

- I totally get wanting to avoid leaks, but man, I do miss having a walkable attic. My last place had rafters and it was handy for tossing up boxes and old furniture.
- With my current house, we went with trusses because the quotes were way cheaper and the builder said they’d handle our heavy snow better. Haven’t had a single issue (knock on wood) but yeah, there’s barely any crawl space up there now.
- One thing I noticed - insurance was a bit cheaper with the truss roof. Maybe that’s just my area?
- Anyone here ever try to add storage or a small loft to a truss attic? I’ve heard some people regret not planning for that upfront, but I’m not sure how much more it would’ve cost.

Curious if anyone has managed to get both: solid truss support and usable attic space, without blowing up the budget...

I hear you on missing a real attic. My first house had those old-school rafters and I basically used it as my “stuff I’ll never touch again” museum. With my current place, trusses everywhere - can barely fit myself up there, let alone boxes. I did look into modifying the truss layout for a small loft, but the quotes were wild. Apparently, “attic trusses” are a thing, but they wanted an extra $7k just for that option. Anyone actually pull it off without taking out a second mortgage? Or is it just one of those HGTV myths?

Trusses are a pain for storage, no doubt. I’ve seen folks try to cut out webs or “open up” their truss space, but man, the engineers get real twitchy about that - mess with the wrong piece and the whole roof can sag. I priced out attic trusses too and yeah, the numbers were way higher than I expected. I guess it’s not just an HGTV myth, but it’s definitely not a cheap weekend project either. Anyone ever see a clever workaround that didn’t involve a structural engineer and a pile of cash?

I’ve seen folks try to cut out webs or “open up” their truss space, but man, the engineers get real twitchy about that - mess with the wrong piece and the whole roof can sag.

Yeah, I’ve seen some wild stuff in attics over the years - someone gets a Sawzall and suddenly thinks they’re Bob Vila. Next thing you know, you’re looking at a roofline that’s got more waves than the beach. Trusses are basically like a big game of Jenga... pull the wrong stick and things get dicey fast.

Honestly, I wish there was a magic trick for getting more space up there without needing an engineer or dropping serious cash. The only “workaround” I’ve seen that didn’t end in disaster was just using those prefab storage platforms that hang from the bottom chords. Not glamorous, but at least you’re not risking your roof caving in on your Christmas decorations. You lose headroom but gain some usable square footage for totes and boxes.

Rafters are a different animal - you get way more open space, but around here (I’m in the Midwest, snow country), everyone’s gone truss for decades because they’re cheaper and faster to install. Switching to rafters after the fact isn’t really practical unless you’re already planning a major reno.

I hear you on attic truss pricing too. Folks see those dreamy walk-up attic conversions on TV and think it’s just a matter of swapping out some wood. Reality check: new trusses mean new engineering, probably beefing up your foundation, maybe even reframing part of the house... it adds up fast.

If you’re just after storage and not living space, my two cents is to work with what you’ve got - add some plywood decking between webs if there’s room, use those hanging shelves, maybe even look into those pulldown attic lifts if you hate hauling boxes up ladders. Anything more than that? Yeah, better call an engineer before your roof starts doing yoga poses it wasn’t designed for.

Funny enough, I did meet one guy who used his truss webs as wine racks... probably not code-approved but hey, it looked cool until he moved out.

I’m right there with you on the truss headaches. I bought my first house last year and thought I’d get clever with attic storage, but wow, it’s a puzzle. My place has those W-shaped trusses - super strong, but the webs cut up the space like crazy. I actually mapped out where I could fit plywood between the webs without touching anything structural. It was kind of like Tetris, honestly, but it worked for a few bins and holiday stuff.

I did get tempted to “open things up” after watching too many reno shows, but after reading some horror stories (and seeing a neighbor’s saggy roof from a DIY gone bad), I decided not to risk it. I even talked to a local engineer just to be sure - he basically said if you want real usable space, it’s almost a new roof project.

If you’re just trying to stash stuff, those hanging platforms and attic lifts are lifesavers. Not glamorous, but way less stressful than worrying about the roof caving in mid-winter. Rafters sound dreamy for open space, but like you said, around here (northern Illinois), trusses rule because of snow load. No easy answers, but playing it safe seems smarter than learning the hard way...

I get where you’re coming from with the “playing it safe” approach, but I’ll admit I’ve always been a bit skeptical about just how untouchable those W-trusses are. Around here (central Wisconsin, so similar snow load), I’ve seen a couple neighbors actually convert their attics for more storage - one even put in a small home office. They didn’t rip out the webs but worked with a structural engineer to reconfigure a few of the diagonals and add some beefier lumber. It wasn’t cheap, but it cost way less than a full new roof.

“I even talked to a local engineer just to be sure - he basically said if you want real usable space, it’s almost a new roof project.”

That’s what I was told too, but after digging around, I found there’s sometimes a middle ground. Not saying it’s for everyone - definitely not a DIY weekend thing - but if you’re desperate for more space, it might be worth getting a second opinion. The key seems to be keeping the load paths intact and making sure the modifications are stamped by an engineer who knows your snow loads.

Funny thing is, my brother-in-law went the other way. His house has stick-built rafters from the 70s, and he thought he’d won the attic lottery. Turns out, his roof is way more prone to ice dams and shifting, and he’s dealing with cracks in the drywall every spring. The truss systems might be annoying for storage, but they’re rock solid for our winters.

I do like your idea about hanging platforms - I rigged up something similar using Unistrut and some pulleys. It’s not pretty, but I can get the snowblower tires out of the way for half the year. If I ever win the lottery, maybe I’ll spring for one of those real attic lifts...

Anyway, just tossing it out there that sometimes there are options between “live with it” and “total rebuild.” But yeah, definitely not worth risking the roof over a few plastic bins of Christmas lights.

I’ve seen folks try to “open up” W-trusses for storage, and honestly, unless you get a real engineer involved, it’s asking for trouble - especially with our snow loads. I get the temptation, but those trusses are calculated down to the last board. Cutting or moving anything without a stamped plan? That’s how you end up with sagging or worse. I’ve inspected a few jobs where DIYers thought they could just beef things up themselves... didn’t end well.

Stick-built rafters do give more flexibility, but like you said, they’re not always better in our climate. I’d rather have a cramped attic than deal with drywall cracks every spring. Hanging platforms are smart though - keeps the weight off the truss chords and avoids messing with the structure itself. Sometimes you just gotta accept what the house gives you and work around it.

I totally get the urge to squeeze more storage out of those W-trusses, but man, I’ve seen too many horror stories from folks taking a saw to them. Around here, with the snow we get, it’s just not worth the risk. I actually had a neighbor who thought he could “sister” some boards onto his trusses for extra strength - looked okay until the next winter, then the ceiling started bowing.

I do think stick-built rafters are nice for flexibility, but honestly, unless you’re building new or gutting the whole roof, it’s usually not practical to swap them out. Hanging shelves or platforms make way more sense - just gotta accept that not every attic is meant to be a walk-in closet. Sometimes you work with what you’ve got and avoid a world of headaches down the road.

I hear you on the temptation to hack at those W-trusses for more headroom or storage. I run into folks all the time who want to turn their attic into a bonus space, but those webbed trusses are really engineered for a specific load - and any shortcuts can backfire fast. I remember a job a few years ago where someone had cut out a section of the webbing to fit some boxes and holiday stuff. Looked fine until we got a big snow, then the drywall started cracking and the trusses sagged. The repair ended up costing way more than just leaving it alone would have.

If you’re dead set on using attic space, I usually walk through a few steps with people:

1. First, check what kind of trusses you actually have. Not all are created equal, and some are designed with a little more flexibility. But most W-trusses just aren’t meant to be messed with.
2. Next, if you’re thinking about adding shelves or a light platform, I suggest anchoring them only to the bottom chords, and keeping the weight super minimal. Even then, I’m cautious - those bottom chords are already working hard.
3. If more space is a must, I’ve seen folks build a raised platform that sits above the truss webbing, so nothing gets cut or overloaded. It’s not a walk-in, but you can slide bins up there. Still, it’s a compromise.

I get why stick rafters are appealing, especially for older homes or new builds. They just give you more options if you want a finished attic or more storage. But swapping out trusses for rafters in an existing roof? That’s a can of worms. You’re basically rebuilding the roof structure, which isn’t cheap or easy.

One thing I sometimes see is people sistering boards onto trusses, thinking it’ll beef them up. Like you mentioned, it’s rarely a real fix - trusses are engineered as a whole, and adding material doesn’t always translate to more strength, especially for snow loads. I’ve had to explain this to more than a few DIYers after the fact.

At the end of the day, I tend to err on the side of caution. If you can’t make the space work safely, it’s better to live with a cramped attic than risk a sagging roof or worse. There’s a reason those trusses look like overkill - they’re doing more work than most people realize.

I get the caution, but I’ve actually had some luck working with a structural engineer to modify trusses for attic space. It wasn’t cheap, and definitely not a DIY job, but they designed reinforcements that let me open up a section for storage without compromising the roof. Took permits and inspections, but it worked out. Not saying it’s for everyone, but sometimes there’s a middle ground if you’re willing to jump through the hoops and pay for pro help. Just depends how badly you want that usable space.

I’ve run into this a couple times with older properties, especially those 70s ranches where everyone wants to turn the attic into something useful. I totally get the appeal - extra storage or even a little office nook sounds great. But man, trusses are a different animal compared to rafters. I had a tenant once who was convinced he could just “move a few boards” to make more headroom. Had to explain (probably too many times) that those “boards” are holding up the whole roof.

I did end up working with an engineer on one of my own places, though, after seeing how much wasted space there was up there. It was a process - permits, city inspections, and a lot of back-and-forth with the engineer. The cost wasn’t small, but it was less than tearing off the roof and starting over. They basically designed these beefed-up supports that let us open up a section for storage. Still, I wouldn’t say it’s for the faint of heart or for anyone hoping for a quick weekend project.

One thing I noticed: insurance got a little weird about it. They wanted proof everything was up to code and signed off by the city before they’d update the policy. Not sure if that’s standard everywhere, but it’s something to keep in mind if you’re thinking about modifying anything structural.

Honestly, if you’re just after a bit of storage, sometimes it’s easier to work with what you’ve got - maybe some shelving between the truss webs or using those prefab attic ladders. But if you’re set on making real usable space, pro help is the only way I’d go. I’ve seen too many DIY jobs where someone cuts out a web and suddenly there’s a sag in the roofline six months later.

Curious if anyone’s tried converting from trusses to rafters entirely? I’ve heard of it but never actually seen it done in person. Seems like a huge job, but maybe worth it if you’re already doing a major reno.