Honestly, I'm starting to regret going with the Timberline HDZ shingles. Had them installed about a year ago, and already noticing some weird discoloration and granule loss. Thought these were supposed to be durable, you know? I mean, they're not exactly cheap either. Wondering if it's just me having bad luck or if others are seeing similar issues...
"Had them installed about a year ago, and already noticing some weird discoloration and granule loss."
Did you check if your roof has enough ventilation? Sometimes discoloration or granule loss is actually a ventilation issue leading to excess moisture buildup under the shingles. Also, have you contacted GAF yet? They're usually pretty responsive about warranty claims. Had a similar situation with another brand once, and it turned out to be an installation error rather than defective shingles themselves...might be worth looking into.
Good points about ventilation—seen plenty of roofs where poor airflow caused moisture issues that mimicked shingle defects. But honestly, granule loss after just one year seems a bit quick to blame solely on ventilation. Usually, ventilation problems take a bit longer to show clear signs like discoloration or mold underneath.
I'd be curious if there's noticeable granule buildup in your gutters or around downspouts after heavy rain? Sometimes that's the first clue that the shingles themselves aren't holding up properly. Also, did the installer use proper underlayment and flashing? I've inspected roofs where cutting corners on underlayment or improper flashing installation accelerated granule loss and discoloration way sooner than you'd expect.
Definitely worth contacting GAF directly, but I'd also consider having an independent roofer or inspector take a quick look. Warranty claims can get tricky if the manufacturer suspects installation errors, so having a neutral opinion might save some headaches down the road.
Yeah, good call on checking the gutters for granules—that's usually a dead giveaway. I've installed plenty of Timberline HDZ shingles and haven't seen significant granule loss that quick unless there was a batch issue or installation shortcuts. Sometimes installers nail too aggressively or mishandle shingles during hot weather, causing premature wear. Definitely worth getting an independent set of eyes on it before dealing with warranty headaches... manufacturers can be picky about installation details.
Had a similar issue with granule loss on mine after about 18 months. Turned out the installer had nailed them too deep, causing tiny cracks. Warranty was a hassle, but eventually got partial reimbursement. Worth checking into carefully before it gets worse...
