By late September the evenings around La Grange start to cool, and the first fireplace fire of the year is only a few weeks off. This is the sweet spot for chimney work: the weather is still mild enough for masonry repairs to cure, sweeps are not yet booked solid, and anything found now can be fixed before you need the fireplace. Here is the checklist we recommend.
Inside the house
- Open the damper fully and confirm it closes tight again
- Look up the flue with a flashlight for obvious debris or nests
- Check the firebox for cracked or missing firebrick
- Test every smoke and carbon monoxide detector and replace old batteries
- Clear rugs, kindling, and decorations well back from the hearth
Outside, from the ground
- Confirm the cap is in place and not rusted or tilted
- Look for a cracked or crumbling crown at the top of the stack
- Scan the brick for white staining, flaking faces, or missing mortar
- Check the roofline where the chimney meets the shingles for lifted flashing or old tar
- Note any water stains on interior ceilings near the chimney
The professional visit
Book the annual sweep and Level 1 inspection now. In older La Grange homes with original clay-tile liners, ask for a camera scan if the flue has never had one or if the house recently changed hands. The sweep removes the creosote that causes chimney fires; the inspection catches the crown, cap, liner, and flashing problems the ground-level look cannot.
Firewood and habits
Lay in seasoned hardwood now so it is dry when you need it, stored off the ground and covered on top. Plan on smaller, hotter fires with the damper wide open rather than long smoldering ones. Those two choices do more to keep a flue clean through the season than anything else a homeowner controls.
Homeowners in La Grange can read more about our local work on our La Grange chimney sweep page, or see the full chimney sweeping service.
Ready to cross the chimney off the list?
Careful work, up-front pricing, seven days a week in La Grange and the western suburbs.
Call (708) 432-5330Frequently asked questions
Why September instead of October or November?
Mild weather for masonry work, open sweep calendars, and time to complete any repair before the first fire. The rush starts the first cold week.
Do I need a sweep if I only burn a few times a year?
You still need the annual inspection. Light use leaves creosote, and an unused flue can collect nests and moisture damage.
What is the most important item on the list?
The professional sweep and inspection. Everything else on the list is good practice, but only the inspection finds hidden liner and crown problems.
How do I check my firewood is seasoned?
It is lighter than green wood, the ends are cracked, two pieces knocked together sound hollow, and a moisture meter reads under 20 percent.
Written by Adam Evans, owner of Chimney Sweep Brothers and a chimney technician with 12 years of experience serving La Grange, IL and the western suburbs.
Published: September 22, 2026