Lexington has historic housing side by side with notable mid-century residential design, which means Chimney Experts Boston might inspect an old brick chimney with lime mortar in the morning and a low-profile mid-century flue with a factory-built firebox in the afternoon. Each calls for its own tools and its own repair materials. Our technicians confirm the construction, the fuel, and any past alterations at the appointment, since renovations and appliance changes can make two neighboring Lexington chimneys behave very differently.
A $299 cleaning includes the sweep and a Level 1 inspection with labeled photos. If you want an inspection only, it is $49, and that fee is credited toward any repair work you approve. All repairs are priced in writing before anything is done. To schedule in Lexington, call (617) 404-9587 or book online.
Lexington housing and chimney profile
Lexington is in Middlesex County, Massachusetts. The housing stock the town is known for includes historic housing mixed with notable mid-century residential design. What that means for an individual chimney is settled at the property, by inspection, not by the town it stands in.
What we look for in Lexington chimneys
On the historic homes in Lexington, the masonry itself is usually the issue. Soft older brick and lime-based mortar were never meant to take modern high-efficiency heating exhaust, and they erode from both the weather outside and the moisture inside. Recessed joints, spalled brick faces, and a crumbling crown are the typical exterior findings, and inside the flue we often find an unlined passage or a clay liner that was added later and has since cracked. Repointing these chimneys requires a mortar mix that matches the original in hardness so the repair does not damage the brick around it.
Mid-century homes in Lexington present something different. Many were built with a low-slope roof and a chimney designed as a visual element, sometimes with a factory-built metal flue inside a framed chase, sometimes with a wide masonry stack serving a large open fireplace. The chase cover on a framed chase is a common leak source, as is the flashing along a low-slope roof where water sits rather than sheds. Wide mid-century fireplaces often draw poorly and accumulate creosote in the smoke chamber, and inserts added later may be venting into an oversized flue.
The Level 1 inspection documents the firebox, damper, smoke chamber, flue passage, exterior masonry or chase, crown or chase cover, cap, and roof interface, with photos labeled by location. Because Lexington houses have often been renovated, the technician also notes visible alterations such as added appliances or altered flues. The written quote names each component, the repair, the specific material, and the price. Work starts only with your written approval, and the $49 inspection is credited toward it.
Services available in Lexington

Chimney Sweep & Cleaning
$299
Inspect-first service with photo documentation and a written scope before work.

Chimney Inspection
$49 / $99 / $299
Inspect-first service with photo documentation and a written scope before work.

Chimney Repair
$300–$2,500+
Inspect-first service with photo documentation and a written scope before work.

Chimney Rebuild
$2,000–$10,000+
Inspect-first service with photo documentation and a written scope before work.

Repointing & Tuckpointing
$300–$2,500
Inspect-first service with photo documentation and a written scope before work.

Chimney Crown Repair
$300–$2,500
Inspect-first service with photo documentation and a written scope before work.

Chimney Cap Installation
$300–$1,300
Inspect-first service with photo documentation and a written scope before work.

Chase Cover Replacement
$800–$1,500
Inspect-first service with photo documentation and a written scope before work.

Chimney Flashing Repair
$200–$2,500
Inspect-first service with photo documentation and a written scope before work.

Chimney Liners & Relining
$1,200–$4,500
Inspect-first service with photo documentation and a written scope before work.

Chimney Waterproofing
$300–$800+
Inspect-first service with photo documentation and a written scope before work.

Creosote Removal
$299–$700+
Inspect-first service with photo documentation and a written scope before work.

Smoke Chamber Repair
$500–$1,500
Inspect-first service with photo documentation and a written scope before work.

Chimney Damper Repair
$199–$1,200
Inspect-first service with photo documentation and a written scope before work.

Firebox Repair
$350–$900
Inspect-first service with photo documentation and a written scope before work.

Masonry Repair
$300–$2,500+
Inspect-first service with photo documentation and a written scope before work.

Chimney Removal
Priced by inspection
Inspect-first service with photo documentation and a written scope before work.

Fireplace & Gas Fireplace Repair
$299–$1,500
Inspect-first service with photo documentation and a written scope before work.

Dryer Vent Cleaning
$99
Inspect-first service with photo documentation and a written scope before work.

Chimney Leak Diagnosis & Repair
$400–$3,000
Inspect-first service with photo documentation and a written scope before work.
Consistent Greater Boston pricing
| Cleaning + inspection | $299 |
|---|---|
| General inspection | $49, credited toward approved repair work |
| Buyer/seller inspection | $99 |
| Leak repair | $400–$3,000 |
How water problems are traced in Lexington
Wind-driven rain can enter at a cap, crown, open joint, flashing transition, or chase cover. In Lexington, the indoor stain may appear below or beside the actual opening because water follows masonry, sheathing, framing, or a sloped roof surface. Diagnosis therefore moves from the highest drainage surfaces toward the observed interior evidence.
The inspection starts with the homeowner's timeline: the room where moisture appeared, storm direction, whether the symptom occurs during every rain, and whether snow or ice was present. Exterior review then covers the cap, crown, termination, upper masonry, wall faces, flashing, cricket or back pan, and roof drainage above the chimney.
Where an attic, chase, or interior cleanout is safely accessible, it may reveal a path that is invisible from the roof. Old stains are documented separately from active moisture. If several openings are plausible, the recommendation can begin with a focused correction or further testing instead of selling every possible repair at once.
A broad water-repellent treatment is not presented as a substitute for open mortar, spalled brick, failed flashing, or a cracked crown. Physical defects are repaired first; a breathable masonry treatment may be considered only for suitable sound surfaces after repairs cure.
Seasonal planning in Lexington
Late summer and early fall are useful times to schedule routine sweeping and inspection before heavy fireplace use. Exterior masonry work is easier to plan when surfaces are dry and temperatures support preparation and curing. Winter visits can still diagnose many problems, but snow or ice may limit roof access.
Spring review is useful after freeze–thaw exposure, especially when fragments, new cracks, rust streaks, or interior stains appeared during winter. A prompt inspection does not mean every condition needs immediate reconstruction; it establishes whether the change is cosmetic, repairable, or a safety and water-entry concern.
Homeowners can help by preserving prior reports, noting the timing of symptoms, keeping the hearth area accessible, and identifying appliance or renovation changes. That information makes the visit more efficient and supports a narrower, more accurate scope.
Planning a multi-component repair in Lexington
When more than one component contributes to a problem, the estimate separates immediate water or venting corrections from preventive work. That allows the homeowner to understand sequence and avoids presenting every observation as equally urgent.
Exterior masonry, crown, and flashing work must connect at their boundaries. The scope states which trade detail finishes first, how adjacent surfaces are protected, and what cure or weather interval is required before a coating or sealant is applied.
Questions Lexington homeowners ask
What does the $299 cleaning include for a Lexington home?
The $299 service includes sweeping the flue, smoke chamber, and firebox and a Level 1 inspection of the interior and exterior. The technician photographs and labels each area, reviews the pictures with you, and writes up any findings. You keep the photos and the written summary.
How is the $49 inspection credited?
When you book the $49 inspection alone, you receive labeled photos and a written report. If a repair is recommended and you approve it in writing, the $49 comes off that repair invoice. If nothing needs work, the $49 is the total cost of the visit.
My Lexington house is historic. Will repointing damage the old brick?
It can if the wrong mortar is used. Modern hard cement mortar on soft historic brick pushes the stress into the brick and causes spalling. The inspection identifies the brick and existing mortar so the quote specifies a compatible mix. The material is written into the quote before any work is approved.
Do you handle mid-century homes with metal chimneys in a wood chase?
Yes. Factory-built metal chimneys inside a framed chase are common in mid-century Lexington homes. The inspection checks the chase cover for rust and ponding, the storm collar and cap, and the connection to the firebox. A failed chase cover is a frequent leak source and is quoted in writing if replacement is needed.
Do you service gas fireplaces in Lexington?
Chimney Experts Boston inspects and services gas fireplaces and gas inserts, including the liner and rooftop termination. The inspection confirms the vent is correctly sized, continuous, and clear. Gas units still need an annual look even though they leave little residue, and any repair is priced before work begins.
What happens if the inspection finds a problem?
The technician explains the finding with the photos and gives you a written price for the repair. No work is performed until you approve it. You can take the report and decide later; the $49 inspection credit still applies to any repair you approve afterward.