- Not sure I totally agree on always needing a full tear-off for future upgrades.
- If your current roof deck is solid and you’re not seeing rot or leaks, a second layer can last a good while—especially with asphalt shingles.
- In my case (midwest, lots of freeze/thaw), I added a layer and still managed to install solar panels later—just needed to double-check the load specs.
- Dumpster fees are no joke, but sometimes the extra cost doesn’t pay off unless you’re already seeing structural issues or planning something heavy like a green roof.
- For basic solar or insulation upgrades, you might have more wiggle room than you think... just depends on your house’s bones.
- For basic solar or insulation upgrades, you might have more wiggle room than you think... just depends on your house’s bones.
That’s interesting—especially the part about solar panels. I’ve heard some installers won’t touch a roof with two layers, even if the structure’s solid. Did you run into any pushback from your solar provider, or was it just a matter of showing them the load calcs? I’m curious how much that varies by region or installer.
Yeah, that’s a real thing—some solar installers just see two layers and nope out, even if your rafters could hold up a bowling alley. In my case, they wanted to see the original plans and then still pushed for a tear-off “just in case.” I think it’s partly liability, partly local code paranoia. If you’re in a snow-heavy area, they get even pickier. Sometimes you can talk them down with stamped load calcs, but not always... depends who you get on the phone that day.
- Totally get what you mean about installers getting spooked by double layers.
- I ran into something similar last year—our roof’s got two layers (asphalt over old shake), and every contractor acted like it was a dealbreaker.
- They all cited “code” or “manufacturer’s warranty,” but honestly, I think a lot of it’s just covering their own backs.
- We’re in a mild climate, so snow load isn’t an issue, but the city still wanted engineering docs before even considering solar.
- I ended up tearing off both layers, which was a pain, but at least now I know what’s up there... and insurance didn’t give me grief about it later.
- Not saying it’s always necessary, but sometimes it’s just easier to bite the bullet than fight city hall.
I get why folks want to avoid the hassle, but I’ve always wondered—how much of the “code” stuff is really enforced, and how much is just contractors not wanting to deal with surprises? When I did my own roof (asphalt over old wood shingles, Midwest, not much snow), I had two layers too. A couple roofers flat-out refused to even quote unless I agreed to a full tear-off. One guy said it was about weight, but honestly, the house frame looked solid and I couldn’t find anything in the city code that said two layers was illegal. Maybe it’s just easier for them to start fresh?
I ended up tearing off everything myself, which was a nightmare—layers of splinters and ancient felt paper everywhere. But at least I could check for rot and fix some bad decking spots. Still, I keep thinking: if you’re not adding a ton of weight and there’s no leaks or sagging, is it really that big a deal to go over an old layer? Or is it just about warranties and liability?
Also, for anyone who’s done solar—did your installer care about how many layers you had? I’ve heard some won’t touch a roof with more than one layer, but others just want to see recent work and good decking. Seems like there’s no real standard.
Curious if anyone’s actually had issues with insurance after adding a second layer, or if that’s just something contractors say to scare you into a tear-off. I get that it’s “best practice” to strip it all down, but sometimes the extra cost and mess just feels like overkill... unless there’s something I’m missing?