Heat cables feel like a band-aid for bigger issues, at least in my case.
Couldn’t agree more. I tried heat cables on my 1940s place—barely made a dent, and the electric bill was a joke. Dense-pack cellulose and a weekend crawling around with a caulk gun did way more. Still, I’ve got a couple spots over the porch that just refuse to cooperate unless I want to start demoing plaster. Sometimes you just have to pick your battles with these old houses...
I get the frustration with heat cables—used them on my last place and honestly, the payoff just wasn’t there. But I’d push back a bit on the idea that more insulation is always the answer, especially with these older houses. Sometimes you hit a wall (literally) where you just can’t add more without tearing into stuff you’d rather leave alone.
One thing I tried that actually made a difference was installing a green roof over my porch. It’s not as crazy as it sounds—just a shallow tray system with sedum and some drainage. It added a layer of insulation, kept the snow from melting unevenly, and cut down on ice dams in that stubborn spot. Plus, it looks way better than heat cables snaking all over the place.
It’s not a quick fix, and it’s definitely not for every roof or budget, but if you’re already fighting with awkward spaces and don’t want to demo plaster, it might be worth looking into. Sometimes thinking outside the box (or under the shingles) is the only way to win with these old houses...
That’s a really interesting take. I’ve seen a couple of those green roof setups and always wondered if they’d actually help with insulation or just look cool. Sounds like you got some real-world results, at least in that trouble spot. I get what you’re saying about insulation not being a magic bullet in these old houses—mine’s got a mix of ancient lath, random patches of blown-in, and who knows what else hiding in the walls... Not exactly ideal for an “add more insulation” approach unless I want to start gutting.
Did you run into any issues with extra weight from the green roof? My porch is pretty solid but I’m always paranoid about adding anything up there, especially with snow load on top. Also curious how it holds up over time—does the sedum survive our winters, or do you end up replanting every year? Maintenance is definitely something I worry about.
Can’t argue with you about heat cables looking ugly as sin. Mine lasted two seasons before half of them stopped working anyway. I tried rerouting gutters and adding venting in the attic but still get those stubborn ice dams along the north side.
I guess my skepticism is just from so many “fixes” turning into new headaches down the line. But your experience makes me think maybe it’s worth exploring something less conventional, at least for the spots where nothing else has worked. Every house seems to have its own set of weird problems, especially once they hit a certain age… Sometimes it feels like you’re just picking which battle you want to fight each winter.
I totally get the hesitation with green roofs—weight is my main concern too. I ran the numbers for my own porch and even with lightweight sedum, it was borderline once you factor in a heavy snow year. I’ve heard sedum can survive pretty harsh winters, but I wonder if it’s different depending on how much sun your spot gets. Maintenance is what keeps me on the fence... I barely keep up with clearing leaves as it is. Heat cables were a bust for me too—three years and they were toast. At this point, I’m just patching ice dams and hoping for a mild winter.
Weight is definitely a big deal, especially with older structures or porches. I ended up reinforcing my garage roof before adding a green layer, but it wasn’t cheap. Sedum’s pretty tough in cold climates—I’ve seen it bounce back even after brutal winters here in Minnesota, though the sun exposure does seem to matter for growth. Maintenance is real, though... I still find myself picking out maple seedlings every spring. Have you looked into adding more insulation under the roof deck instead of relying on heat cables? For me, upping the insulation made a bigger dent in ice damming than anything else.