Level 1 sweep and inspection to the NFPA 211 annual standard - flue, crown, cap, and flashing checked and photographed
Chimney sweep logs do not sweep chimneys. They loosen some creosote - which then falls where a brush and vacuum still have to collect it.
Famco Chimney Cap Installation: The Woburn Owner’s Guide
We stock and install Famco-compatible chimney caps across Woburn, with most replacements running $280-$520 installed depending on flue size and whether your cap is single-flue or multi-flue. Our trucks carry the common Famco galvanized and stainless-steel sizes, so we can usually measure, match, and install in one visit. Most Woburn homeowners discover their cap has failed during a routine sweep or after spotting rust streaks on the brickwork during spring cleanup.
Which Famco Models This Applies To
Famco caps fall into a few distinct series, and getting the match right matters more than you’d think. The Galvanized Single-Flue line covers 8″×8″ up through 13″×13″ flue tiles, while the Stainless Steel Multi-Flue series handles broader chimney crowns with up to three flue openings. You’ll find the model stamp on the underside of the existing cap, usually a small embossed code near the mesh screen edge. If the stamp’s rusted away, we measure the flue tile opening and the crown overhang to spec the replacement.
OEM Famco caps ship with their proprietary mesh pattern, 18-gauge on galvanized, 20-gauge on stainless. We also carry aftermarket equivalents from Gelco and Copperfield that match the mounting footprint exactly. The aftermarket route saves roughly $40-$80 on parts without sacrificing fit, though some Woburn owners prefer staying with Famco for consistency, especially on newer installs where the original cap failed prematurely. We’re independent of Famco, so we’ll tell you straight which route makes sense for your setup.
Signs Your Famco Chimney Cap Is Failing
- Rust bleeding down the chimney face. Galvanized Famco caps in Woburn typically show surface rust at the 8- to 12-year mark, accelerated by the freeze-thaw cycles we get off the Mystic Valley. Once rust migrates past the cap skirt onto the brick, the underlying metal is thinning faster than it looks.
- Mesh screen pulling away from the frame. The spot-welded joints on older Famco caps fatigue from thermal cycling. A gap as small as half an inch lets squirrels and starlings into the flue, and we’ve pulled nests from Montvale Avenue chimneys where the screen had separated completely on one side.
- Cap sitting crooked or loose after wind. The tension-fit mounting brackets on single-flue Famco models can fatigue, especially if the original installer overtightened them. A cap that shifts in a March nor’easter is one storm away from landing in your yard, or your neighbor’s.
- Water staining on the firebox ceiling. When the cap’s lid seal degrades, rain tracks directly down the flue tile. In Woburn’s older colonials with unlined chimneys, that water hits the smoke shelf and soaks into the masonry, showing up as dark patches you notice first when opening the damper in October.
- Draft problems or smoke rollback on startup. A dented or improperly seated Famco cap can disrupt the pressure differential that draws smoke upward. We’ve traced “my fireplace never drafts right” complaints to caps installed upside-down after a homeowner’s DIY attempt, the mesh blocking half the flue opening.
Replacement Cost & What’s Included
| Service Component | Price Range (Woburn) |
|---|---|
| Famco-compatible cap, single-flue galvanized | $280-$360 installed |
| Famco-compatible cap, single-flue stainless | $340-$440 installed |
| Multi-flue stainless cap (custom crown fit) | $420-$520 installed |
| Crown repair prep (if needed) | $80-$150 additional |
What drives the range: flue tile dimensions, whether your crown is level enough to seal against, and whether we need to fabricate a custom adapter for an unusual flue configuration. Our estimate includes the cap, stainless fasteners, high-temp sealant, and disposal of the old unit. We photograph the crown condition before and after, and every Famco cap installation carries our 90-Day Done Right Promise in writing. The number on the estimate is the number on the invoice.
DIY or Call Us?
There’s a safe middle ground here. A homeowner can check whether the cap is loose, photograph the model stamp, and measure the flue tile opening with a tape measure from the roof edge, no ladder work required. What we don’t recommend: climbing a Woburn colonial’s steep-pitch roof in November to wrestle with tension brackets that may be corroded in place. The fall risk is real, and a cap that releases suddenly can slide fast.
We also see DIY installs where the cap was seated crooked, where the wrong fasteners let water track behind the flange, or where the mesh orientation blocked the flue. If the flue isn’t right, the fire isn’t safe, and there’s no shortcut around that. Our technicians carry the right brackets, the right sealant, and the judgment to know when the crown underneath needs attention before the cap goes on. Call (781) 404-3793 and we’ll give you a straight answer on whether this is a job for your Saturday or ours.
FAQs
Galvanized Famco caps average 10-15 years in our climate; stainless models run 20-25 years if the crown stays sound. The freeze-thaw cycling off Route 93 and the salt air influence from the coast both push those numbers toward the shorter end. Call (781) 404-3793 for an exact quote - estimates are free.
Minor mesh reattachment or spot rust treatment can buy a year or two, but once the frame distorts or the lid seal fails, replacement is the only fix that holds. We’ve tried welding repairs on galvanized caps and the heat compromises the coating, so rust returns within two seasons. Call (781) 404-3793 for an exact quote - estimates are free.
Most Famco chimney cap replacements in Woburn take 45 minutes to 90 minutes from ladder set to cleanup, assuming the crown is sound and the flue tile isn’t cracked. Multi-flue caps or crown prep adds time, but we still complete most jobs in a single visit. Call (781) 404-3793 for an exact quote - estimates are free.
We carry the common single-flue sizes in galvanized and stainless, plus multi-flue adapters for standard crown dimensions. For rare Famco configurations or custom-fabricated caps, we measure, order, and return within 48 hours. Call (781) 404-3793 for an exact quote - estimates are free.
Get Your Famco Cap Measured and Installed Right
We’ve been replacing chimney caps on Woburn homes since before the North Woburn revitalization, and we’ve learned that the right cap, seated on a sound crown, is what keeps the water out and the draft true. Russell Haines and our crew will photograph what you have, explain what you need, and give you a price that doesn’t change when the job’s done. No voicemail, no callback queue - a live person answers at (781) 404-3793 any hour of any day. The estimate is free, and the work is backed by our 90-Day Done Right Promise in writing.
Written by Russell Haines, Owner, Hearthstone Chimney Co. at Hearthstone Chimney Co., serving Woburn and nearby areas.





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