Is it normal for gas logs to flake or crack over time?
Yes — some surface flaking, hairline cracking, and color fading is completely normal for gas logs after years of direct flame. They're ceramic-fiber or refractory castings that heat-cycle every burn. What isn't normal is a log breaking into loose pieces, crumbling onto the burner, or a crack that's changing the flame pattern. That's when they need a look.
Normal aging versus a real problem
Every time you light the fire, the logs heat to hundreds of degrees and cool back down. Over years, that expansion and contraction leaves fine surface cracks and a little flaking — cosmetic, expected, not a reason to worry. The hand-cast ceramic-fiber logs in premium sets like Mendota's, and the refractory-cement Real Fyre sets we carry, both do this to some degree. The line you're watching for is structural: a log splitting into pieces, edges crumbling into powder that lands on the burner, or a chunk breaking free.
Why it matters more on ventless
On a vented set, a little flaking is mostly a looks issue — the heat and combustion byproducts go up the chimney. On a ventless set, the logs sit directly in the flame with the damper closed, and their exact placement is part of how the appliance burns clean. Debris from a crumbling log can block ports, distort the flame, and push a ventless burner toward incomplete combustion — the very thing its oxygen depletion sensor is watching for. So on ventless, degrading logs are a safety cue, not just cosmetic. Vented sets give you more slack.
When to call us
Book a look if pieces are breaking off, if debris is piling on the burner, if the flame pattern has changed, or if the logs are sooting the glass or the set black and won't clean up. Often the fix is simple — reposition the logs to the diagram, clear the ports, replace the set only if it's genuinely spent. We won't upsell you a new set for honest fading; if they're just old but sound, we'll tell you that. Fold it into your annual service or call (828) 545-0525.
How we can help
Related questions
- How long do gas logs last before they need replacing?
- Can I replace just one damaged log in a gas log set?
- How do I clean dust off gas logs without damaging them?
- Why is soot building up on my gas fireplace glass, and how do I prevent it?
- Does the sand in a vented gas log burner pan ever need to be replaced?
- How often should a gas fireplace be serviced?
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