Composition Roof, Roof damage from improper installation, need advice

I sometimes wonder if there’s a point where you just have to call it and redo a section, especially if you’re seeing a bunch of pops in one area.

Yeah, I’ve definitely hit that wall before - patching works for a while, but if you’re seeing clusters of nail pops, it usually means there’s something off with the install or even the decking underneath. At that point, I’d lean toward redoing that section rather than chasing leaks every season.

On the nails, I’ve noticed ring-shank does hold better, especially on older homes where the wood’s not as tight. Galvanized is fine for most cases, but ring-shank seems to resist backing out when things expand and contract. Could be overkill for some spots, though.

Sealant in cold weather is always tricky. I’ve had patches peel right up when it’s below freezing - seems like waiting for a warmer day or using a product rated for low temps makes a difference. Never found a real shortcut for that one...

You’re spot on about those nail pops being a red flag. In my experience, if you’re seeing them in clusters, it’s usually not just cosmetic - it’s a sign something’s off under the surface. I’ve seen folks patch and patch, but it always comes back to bite them later. Sometimes biting the bullet and redoing that section saves a ton of headaches (and money) down the line.

Ring-shank nails are definitely tougher, but yeah, sometimes it feels like overkill unless you know the decking’s questionable. As for sealant, I’ve had the same issues - cold weather just doesn’t play nice with most products. Waiting for a decent day is frustrating, but it really does make a difference. You’re not alone dealing with this stuff... roofs love to keep us humble.

That’s kinda what I was worried about… I’ve got a few nail pops showing up in one corner, and it’s making me nervous. Is it always a decking issue, or could it just be bad nailing? My house is only 12 years old, so I’m hoping it’s not already rotting underneath. Also, is there any way to tell how bad it is without tearing up a bunch of shingles? I’m not exactly thrilled about the idea of ripping into the roof unless I have to.

- Nail pops aren’t always a decking problem - sometimes it’s just sloppy nailing or nails that were too short.
- At 12 years, rot’s not super likely unless you’ve had leaks or bad ventilation.
- You can sometimes spot soft spots by gently pressing on shingles, but yeah, full inspection means lifting them up.
- If you’re worried about moisture, check your attic for staining or musty smells before tearing into the roof.
- If you ever do need repairs, consider recycled-content shingles or cool-roof options - better for the planet and your energy bill.

Had the same issue with nail pops a few years back - turns out the original roofer used nails that were about as long as my thumb. Not ideal. I just hammered them back in and hit the spots with a dab of roofing cement. Haven’t seen any leaks since, but I keep an eye on it after big storms.

Twelve years is still pretty young for composition shingles unless you’ve got some real weather extremes or ventilation problems. If you’re seeing a bunch of popped nails and no obvious leaks, it’s probably not rot yet. I’d poke around in the attic for any weird stains or damp insulation before pulling up shingles. Learned that one the hard way... tore up half my roof only to find out it was a leaky vent pipe boot, not rot.

If you do end up needing repairs, those cool-roof shingles are worth considering (my neighbor put them on last year - his upstairs is definitely cooler now). Just make sure whoever does the work actually nails things down properly this time.

Nail pops are such a pain - I've seen them mostly where the installer used short or smooth-shank nails, or missed the rafters entirely. Just hammering them back in works for a bit, but they tend to work loose again if the underlying wood’s a little soft or there's movement from thermal expansion. If you’re not seeing leaks, I’d still check the attic after heavy rain like you mentioned - sometimes water stains hide in insulation way before you notice anything inside. Cool-roof shingles are interesting, but make sure your attic ventilation is up to par too... otherwise even the best shingles won't help much with heat buildup.

Seen this so many times after a hailstorm or big wind event - nails just working their way out because they weren’t sunk into solid wood, or they used the wrong type. I’m always a little skeptical when folks just hammer them back in... sure, it looks fixed for a while, but if you don’t swap ‘em for ring-shank nails (and maybe dab a bit of roofing cement), you’re probably looking at another round of pops. And yeah, attic checks are underrated - caught a slow leak once only because the insulation was damp. Ventilation’s another can of worms, but I’d fix the fasteners before worrying about cool-roof shingles.

sure, it looks fixed for a while, but if you don’t swap ‘em for ring-shank nails (and maybe dab a bit of roofing cement), you’re probably looking at another round of pops. And yeah, attic che...

Totally get what you mean about attic checks - found a wet patch in my own insulation last spring, and if I hadn’t poked around, would’ve missed it. Curious though, do you ever see ring-shank nails actually holding up long-term, or are screws better in some cases? I’ve seen some folks swear by screws for repairs, but maybe that’s overkill for comp shingles.

Ring-shank nails have held up fine for me on comp shingles, especially if you hit the right depth and add a dab of cement. Screws can work, but they’re usually overkill unless you’re dealing with decking or something structural. Nails are faster and less likely to split the shingle, too.

I get that nails are faster, but I actually had a section of my roof where the ring-shank nails started backing out after a couple years. Maybe it’s just my luck or the way the installer did it, but I ended up with some loose shingles and leaks.

“Nails are faster and less likely to split the shingle, too.”

I’ve seen nails back out too, especially if they weren’t set flush or if the decking’s a bit soft. Screws definitely bite harder, but sometimes they can over-tighten and crack the shingle if you’re not careful. What kind of shingles are you working with - architectural or three-tab? That can make a difference in how well fasteners hold up over time.

I’ve run into the same thing with nails working loose, especially on the south side of my house where the sun just bakes the shingles. I’m using three-tab, and honestly, they don’t seem to grip as well as architectural ones. The decking underneath is a bit older too, so I wonder if that’s part of the problem - maybe the wood’s just not holding the fasteners like it used to.

I tried switching to screws in a couple spots, but like you said, it’s easy to go too far and end up with a cracked shingle. It’s kind of a balancing act. I’ve also noticed that if the nails aren’t driven in perfectly straight, they tend to back out faster. Not sure if that’s just my technique or if it’s more common with three-tabs.

Curious if anyone’s had luck with those ring-shank nails? I’ve heard they hold better, but haven’t tried them myself yet.

Ring-shank nails are like the Velcro of the roofing world - at least, that’s what my neighbor swears by. I tried them on a patch over my porch and they haven’t budged, even after a couple of those “sideways” Kansas windstorms. The only downside is they’re a pain to pull out if you ever need to replace a shingle, but honestly, I’d rather fight with a stubborn nail than chase shingles across the yard again. Three-tabs just seem to want to fly away at the first sign of trouble…

Ring-shank nails really are a game changer for wind, no doubt. I’ve seen plenty of roofs where smooth shank nails just couldn’t keep up - especially with those three-tab shingles you mentioned. In my experience, the biggest issue with improper installation is when folks either use the wrong type of nail or don’t drive them in straight. That’s when you start seeing shingles lifting or sliding after a couple seasons.

One house I inspected last fall had a whole section where the installer missed the nail strip on almost every shingle. Looked fine from the ground, but up close, you could literally lift half the tabs with your hand. The homeowner was frustrated because it was only five years old and already leaking.

If you’re patching or replacing, I’d suggest double-checking that each nail hits the manufacturer’s recommended spot - usually right above the cutout for three-tabs. And yeah, ring-shanks are tough to pull, but like you said, better than chasing shingles down the street after a storm. Just be careful not to overdrive them or split the shingle.

Wind in Kansas doesn’t mess around... sometimes it feels like nothing short of glue would keep those tabs down.

So the repair looks like it will work.  The shingles were lifted up, nails removed, and rotted OSB and skip sheathing removed.  Some of the skip sheathing were rotted pretty bad and the contractor overlaid the OSB on top of the rotted areas.  I then ripped some pieces from a 2x6 the required 1.250" thickness, (the thickness of the original skip sheathing plus the .500" thick OSB that was put over the top).  These were cut to the correct length of the rotted areas and the shingles were lifted up and these pieces were slipped in.  The shingles laid back down and the piece of wood made the roof line smooth to the drip edge.  I used Henry's in a tube to seal the areas as shown in the images.  Then I noticed what I think was the rood cause.  The contractor, who was doing the addition was slow with work said they could do the roof, didn't use the correct spacing of the shingles.  I understand the spacing is supposed to be 6 to 8 inches and I measure 3.5 inches.  This and the short starter strip seems to have caused the issues.  Not every spot where there was a seam on the first row was rotted.  Also, in other places the spacing was a bit more, like 4 to 5 inches.  So now I have to find any other spots and seal them up before they leak. 

I get why you’d want to seal up every questionable spot, but honestly, relying on Henry’s or any sealant as a long-term fix might not hold up. In my experience, patching over installation mistakes - especially with shingle spacing that tight - just buys time. Water finds its way in eventually, especially if you’re in a wet climate. I’d be more concerned about the OSB over rotted skip sheathing too... sometimes it’s better to bite the bullet and replace the bad sections fully, even if it’s a pain. Otherwise, you might be chasing leaks for years.

Curious - did you notice any soft spots or sagging when you walked the roof? Sometimes the real trouble shows up underfoot before you even see it from below. How old is the OSB layer, and was there any ventilation added when it went in?

That’s a good point about feeling for soft spots - sometimes the roof feels “spongy” before you see anything wrong. I’ve seen cases where the OSB was only 10 years old but had issues just from poor airflow. If you didn’t notice any sagging, that’s a good sign, but I’d still keep an eye out if you’re in a humid area. Ventilation makes such a difference long-term.

I’ve run into that “spongy” feeling a couple times, usually when I’m checking out older roofs in neighborhoods with lots of trees and not much airflow. Once, we pulled up the shingles and the OSB looked fine from above, but underneath it was already starting to flake apart. No sagging yet, but you could tell it wasn’t going to last much longer. Makes me wonder how many people miss early signs just because there’s no obvious dip or leak. Ventilation’s one of those things that’s easy to overlook until it’s too late...

It has full ridge peak vents and all the wood under the soffits are slit.  But knowing a bit about airflow, that is not much.  On a previous house, I replaced the small cheap vents under the gable ends with a one that was four times the area.  I had a sheet metal shop make them out of galvanized steel.  They were really nice.