Fast, Reliable Chimney Cap & Crown Across Cedar Mill
Chimney cap and crown repair in Cedar Mill typically runs $280–$890 depending on whether you need a simple coating, full crown rebuild, or custom multi-flue cap installation. Most of our Cedar Mill customers get same-week scheduling, and we carry the heavy-duty materials needed for one-trip completion on acreage properties with longer service drives. Call (866) 541-8697 for a free estimate.
We’ve been driving out to Cedar Mill since our early days — up Cornell Road, past the Nike campus, into the wooded hills where the Tualatin Mountains catch every Pacific storm. James Wilson, our owner and lead technician, knows these roads and these chimneys. The 97229 ZIP covers a unique stretch of unincorporated Washington County: older ranch homes on quarter-acre lots, 1980s split-levels tucked into the Douglas fir canopy, and rural properties with detached shops and outbuildings that see real use through wet winters. Our Chimney Cap & Crown team doesn’t treat Cedar Mill as “basically Portland.” The county’s separate permit process, the heavier rainfall on this western slope, and the prevalence of under-seasoned backyard wood all change what your chimney needs.
Why Horizon Chimney Sweep Washington Is Cedar Mill’s Preferred Chimney Cap & Crown Company
Our 1,006 verified reviews at 4.8 stars include dozens from Cedar Mill and the surrounding unincorporated hills. Homeowners here mention the same things: James Wilson showed up when he said he would, spotted problems the last company missed, and explained why their crown was failing without pushing unnecessary work.
Response time matters in Cedar Mill. We’re typically on-site within 3–5 business days, sometimes faster for crown cracks that are actively letting water into the flue. The long service drives to properties off NW Thompson or NW Laidlaw don’t cost extra — we price by the job, not the odometer.
What builds trust here is local fluency. We know that Cedar Mill’s position on the rain-shadow-free western slope of the Tualatin Hills means it absorbs the full force of Pacific weather systems, with wet winters running October through April — the same months residents lean heavily on fireplaces. Prolonged moisture exposure during this season deteriorates mortar joints, chimney crowns, and flashing on the older masonry structures common here, and occasional hard freezes accelerate that spalling. We’ve replaced enough cracked crowns off NW Kaiser Road to recognize the pattern before we park the truck.
Our Chimney Cap & Crown Services in Cedar Mill
Custom Cap Installation
Cedar Mill’s acreage properties and larger homes often need more than standard box-store sizes. We fabricate and install custom caps from Copperfield and Famco to fit oversized or irregular flue configurations — common on homes with added fireplace inserts that changed the original venting geometry. A proper custom cap keeps Pacific rainwater out while allowing enough draft for safe combustion. Most custom installations in Cedar Mill run $450–$780.
Crown Repair
Cedar Mill’s heavy winter rains and freeze-thaw cycles cause rapid spalling on older masonry crowns, and the county’s separate permit process means many unlicensed chimney caps fail inspection. We see this constantly on 1970s–1990s ranch homes near NW Cornell Road — surface cracks that look minor until water freezes, expands, and turns a $400 coating job into a $1,200 rebuild. James Wilson assesses whether your crown needs a HeatShield resurfacing or full concrete replacement, and we handle Washington County permit documentation when required.
Multi-Flue Cap Installation
The 1980s split-levels and two-story colonials throughout Cedar Mill’s 97229 often have multiple flues clustered on a single chimney — original fireplace plus later-added insert or wood stove. Standard single-flue caps leave gaps where rain enters. We install Olympia Chimney and Copperfield multi-flue caps sized to cover the entire chimney top, with screening that keeps out the Douglas fir needles and debris common in these wooded lots. Expect $520–$890 for multi-flue coverage on typical Cedar Mill homes.
Crown Coating
For crowns with minor surface deterioration — hairline cracks, slight spalling, but sound structural concrete — we apply HeatShield crown coating, a breathable elastomeric sealant formulated for wet climates. In Cedar Mill’s conditions, this buys 5–8 years of protection before more invasive work is needed. Coating runs $280–$450 and takes about half a day. We don’t recommend coating over crowns that are already crumbling; James Wilson will show you the difference and explain why.
What happens when you call
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A real person answersNo phone trees — you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Cedar Mill
We stock and install caps and crown materials from Olympia Chimney, Famco, and Copperfield — brands that hold up to Cedar Mill’s wet-season abuse. Copperfield’s stainless multi-flue caps in particular handle the needle load from surrounding Douglas fir without clogging. We keep common sizes on the truck, which means most Cedar Mill customers don’t wait for special orders. When a custom fabrication is needed, our supplier relationships typically turn those around in 4–6 business days rather than the 2–3 weeks you’d face ordering direct.
Common Chimney Cap & Crown Problems We See in Cedar Mill Homes
- Improper cap sizing on multi-flue chimneys common in 1970s–1990s homes, leading to rain ingress and accelerated creosote. We replaced a cracked crown and installed a custom Copperfield multi-flue cap on a 1980s split-level off NW Kaiser Road. The homeowner had been burning under-seasoned Doug fir from a fallen backyard tree, and wet weather had worsened the crown crack—our team resealed it with HeatShield and installed a heavy-duty cap to handle the oversized flue.
- Crown coating failure due to Cedar Mill’s wet winters, causing water to seep behind inserts and damage liners. The constant October-through-April moisture saturation on the Tualatin Hills’ western slope breaks down standard coatings faster than Portland’s slightly drier eastern neighborhoods.
- Unpermitted cap replacements by Portland-based contractors that don’t meet Washington County requirements and fail inspection. Because Cedar Mill is unincorporated Washington County rather than a city, chimney work falls under county building permit and inspection requirements — not Portland’s. Contractors who don’t know the distinction leave homeowners with failed inspections and redo costs.
- Hidden creosote pockets behind retrofit inserts in Cedar Mill’s 1970s–1990s housing stock, made worse when missing or undersized caps allow rain to mix with soot. The combination of under-seasoned backyard wood and poor venting creates acidic condensation that eats crown concrete from below.
Pricing for Chimney Cap & Crown in Cedar Mill, OR
| Service | Typical Range in Cedar Mill |
|---|---|
| Crown coating (minor cracks) | $280–$450 |
| Crown repair (partial rebuild) | $480–$720 |
| Full crown replacement | $780–$1,400 |
| Standard cap installation | $320–$580 |
| Custom cap installation | $450–$780 |
| Multi-flue cap installation | $520–$890 |
What moves you up or down within these ranges: accessibility (steep roof pitch, height), whether Washington County permits are required, and the condition of existing flue liners that must be protected during crown work. We don’t quote over email for crown jobs — James Wilson needs eyes on the crown to distinguish coating-candidate from replacement-required. Estimates are free. Call (866) 541-8697.
We Also Serve Cities Near Cedar Mill
We regularly run cap and crown work in Bethany, Oak Hills, Aloha, and Rockcreek — all within Washington County’s permit jurisdiction, all sharing similar Tualatin Hills weather exposure. If you’re on the border between Cedar Mill and any of these neighborhoods, we’ll confirm your exact permit requirements before scheduling.
Serving Cedar Mill, OR — Our Local Coverage Area
We’re based in the Cedar Mill area and know this community well. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs — Chimney Cap & Crown in Cedar Mill
Yes, if the cap replacement involves modifying the flue opening, adding a multi-flue cover, or any work on the crown structure itself. Simple like-for-like cap swaps on existing flue collars typically don’t trigger permitting, but we verify your specific scope against Washington County’s current requirements before starting. Unpermitted work by contractors unfamiliar with county rules is a recurring problem we fix. Call (866) 541-8697 and we’ll confirm whether your job needs county approval — estimates are free.
Cedar Mill absorbs heavier rainfall and more freeze-thaw cycles than Portland’s eastern neighborhoods. Your position on the western slope of the Tualatin Hills catches Pacific storms head-on, and the 1970s–1990s masonry in this area was built with crown concrete mixes less resistant to modern wet-season saturation. The result: spalling, cracking, and cap rust that Portland’s drier microclimates produce more slowly. Annual inspection catches this before water reaches your liner. Call (866) 541-8697 to schedule.
Yes, provided we verify clearances and flue sizing first. Cedar Mill’s 1980s split-levels often have original fireplaces with later insert additions that changed venting requirements. We measure both flues, check for liner compatibility, and fabricate a multi-flue cap from Olympia Chimney or Copperfield that covers the full chimney top without choking draft. James Wilson handles this measurement personally — it’s not a guess. Call (866) 541-8697 for a free assessment.
We install, repair, and replace caps from Olympia Chimney, Famco, and Copperfield — all brands rated for wet-climate durability. For Cedar Mill’s heavy needle load and prolonged moisture exposure, we typically recommend Copperfield stainless multi-flue models or Famco’s welded-seam custom fabrications. We don’t install off-brand or thin-gauge caps that won’t survive five winters here. Call (866) 541-8697 to discuss which brand fits your chimney configuration.
Look for visible cracks wider than a nickel, concrete chunks missing, or water staining on the ceiling near your fireplace. But surface cracks can be deceptive — some crown coatings hide deeper structural failure. James Wilson uses a simple but telling test: tapping the crown surface to sound for hollow spots where water has separated concrete from the brick beneath. If the crown is solid but weathered, coating works. If it’s hollow or crumbling, replacement is the only safe option. We’ll show you exactly what we found and why. Call (866) 541-8697 for a free crown inspection.
Ready to protect your chimney through another Cedar Mill winter? James Wilson will come to your door, assess your cap and crown honestly, and quote the work upfront — no pressure, no surprises. Call (866) 541-8697 today for your free estimate.
Written by James Wilson, Owner at Horizon Chimney Sweep Washington, serving Cedar Mill and the greater Portland metro since 2007.