Question 1

I only light a few fires a winter. Does my chimney really need sweeping?

Accepted Answer

Probably, but not for the reason most people assume. On a North Hills ranch that sees maybe a dozen fires between December and February, creosote barely builds up. What does build up is everything else: leaf litter, grit and twigs blown in during Santa Ana events, and nests built during the nine or ten months the flue sits idle and warm. Those small original fireboxes have shallow clay-lined flues and short brick stacks, so it doesn't take much debris to choke the draft. The inspection matters more than the brushing here, and the brushing is usually quick.

Question 2

My fireplace was converted to gas logs years ago and the damper is propped open. Is that a problem?

Accepted Answer

It's common in this part of the Valley, and it's two separate issues. The propped-open damper is correct for gas logs. It's a safety requirement, not an oversight. But it means your flue is an open pipe to the roof all summer, which is how the debris and nesting get in. The other issue is that nobody has looked up that flue since the conversion. We check the clay liner for cracked or displaced tiles, confirm the damper clamp is actually in place, and look at the firebox for spalling behind the log set. If you're thinking about going back to wood, that inspection has to happen first.

Question 3

What fails most often on 1950s and 60s chimneys around here?

Accepted Answer

The crown, almost always. Sixty-plus years of Valley sun on a thin mortar wash leaves it cracked through, and once water gets into the top of a short brick stack it works down through the joints. From there you get crumbling mortar, loose bricks at the top courses, and eventually water staining on the firebox or the ceiling nearby. Inside, the second most common finding is cracked or shifted clay tiles in those narrow original flues. On the newer condo and apartment units it's a different list. Chase-top caps that have rusted through or lost their seal, and prefab metal fireplaces where the refractory panels have cracked.

Question 4

How fast can you get out to North Hills, and can you do it the same day?

Accepted Answer

Outside of the winter window, usually within a couple of days, and same-day is often realistic because demand is low most of the year. December through February is the opposite. Once the weather turns and people want a fire for the holidays, the schedule fills and same-day slots disappear. If you know you want to burn this winter, booking in early fall is the easy way to avoid the wait. Urgent situations like a visible blockage, an animal in the flue, or smoke pushing into the room get moved up regardless of the season.

Question 5

What makes one North Hills job cost more than another?

Accepted Answer

Access and condition, mostly. A single-story stucco ranch with a short brick stack is about as easy a roof as we work on, and a straightforward sweep and inspection on one of those sits at the low end. The number climbs when the crown is cracked and needs repair, when mortar joints have deteriorated enough to need repointing, or when there's a nest or heavy debris pack that has to be cleared rather than brushed. Condo and apartment prefab units are usually simpler on the sweep side but can need a chase-top cap replaced. We tell you what we found and what it would take before anything beyond the cleaning happens.

Chimney Sweep in North Hills, CA

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