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.
Before
After
Before
After
Before
AfterOlympia Chimney Chimney Cap & Crown in Gaithersburg: What to Know First
We provide independent Olympia Chimney chimney cap and crown service in Gaithersburg, with most jobs completed in a single visit and upfront pricing agreed before we start. A standard Olympia Chimney cap installation runs $340-$620, while crown repair or coating typically falls between $280-$550 depending on accessibility and the condition of the existing masonry. We do not quote over the phone without seeing the chimney, because every flue in Montgomery County has its own story.
This page is for homeowners who already have an Olympia Chimney liner, cap, or crown and need it repaired, replaced, or protected properly. Whether you are in the Kentlands, an older colonial near Washington Grove, or a split-level off Quince Orchard Road, we have worked on your type of chimney before. Call (301) 719-5236 to speak with a live person and book a free estimate.
How Olympia Chimney Products Fail - and How We Fix Them
- Olympia Chimney stainless steel caps (standard and multi-flue series) - fastener corrosion in Gaithersburg’s freeze-thaw cycles. The 304-grade hardware that ships with some older Olympia caps does not hold up against Montgomery County’s winter wet-dry cycling. We see the mounting screws seize or snap, leaving the cap loose after three to five winters. We replace with 316 marine-grade fasteners and add a proper storm collar when the flue projection is short.
- Olympia Chimney Gelco-compatible caps - mesh sizing errors from original install. Some Gaithersburg homes got caps with 3/4-inch mesh where 5/8-inch was needed for smaller flue tiles, or vice versa. The wrong mesh clogs with creosote faster or lets embers through. We measure the flue tile and the cap frame separately, then source the correct mesh size or fabricate a custom fit.
- Olympia Chimney crown-forming jobs - hairline cracking from improper slope or thickness. When an Olympia crown was poured too thin or without adequate pitch, water pools instead of shedding. In shaded lots common near the C&O Canal corridor, that standing water freezes, expands, and spiderwebs the concrete. We cut back to sound material, repour with proper slope, and seal with a vapor-permeable crown coat.
- Olympia Chimney multi-flue caps - sagging frames on wide masonry chimneys. The span between flues on some 1960s and 1970s Gaithersburg colonials exceeds what a standard multi-flue cap can support without a center brace. The frame bows, the mesh rubs the flue tile, and the cap eventually detaches. We install a reinforced frame or specify a custom-fabricated cap with intermediate supports.
- Olympia Chimney crown wash failures - premature deterioration where the wash was applied over dirty or damp masonry. A crown wash needs a clean, dry substrate to bond. When it is slapped on over soot or green concrete, it delaminates in sheets within two seasons. We grind or wire-brush to bare masonry, let it dry, then apply a two-coat system with proper cure time between.
Our Olympia Chimney Chimney Cap & Crown Process
- 1
Call and schedule. A live person answers, checks availability, and notes your Olympia Chimney model if you know it. We do not dispatch blind.
- 2
Level-2 camera inspection on arrival. Our technician photographs the flue interior, the crown surface, and the cap mounting condition. You see the images on a tablet before any work is proposed.
- 3
Parts decision: OEM Olympia Chimney, compatible aftermarket, or custom fabrication. We stock common Olympia Chimney cap sizes and Gelco-compatible hardware. If your flue configuration is unusual, we explain the trade-off between waiting for OEM and using a quality aftermarket equivalent from Famco or Copperfield. The choice is yours, and the price difference is stated plainly.
- 4
The repair or installation. For caps, we remove the failed unit, inspect the flue tile for hidden cracks, and mount the replacement with proper clearances and storm protection. For crowns, we remove deteriorated material, form and pour new concrete, or apply a professional-grade crown coating depending on what the damage warrants.
- 5
Post-repair verification. We run the camera again to confirm no debris entered the flue, check cap stability in a light wind, and document the finished work with photos for your record.
- 6
Written guarantee and cleanup. The 90-Day Done Right Promise is noted on your invoice. We leave the work area cleaner than we found it. Payment is due only when you are satisfied.
What Olympia Chimney Chimney Cap & Crown Costs in Gaithersburg
| Service | Typical Range | What Moves the Price |
|---|---|---|
| Olympia Chimney standard cap replacement | $340-$480 | Flue height, need for storm collar, fastener condition |
| Olympia Chimney multi-flue cap (2-3 flues) | $480-$620 | Span width, need for custom frame or center support |
| Crown repair / partial rebuild | $280-$450 | Depth of deterioration, scaffolding needs, accessibility |
| Crown coating (sound base, preventive) | $280-$380 | Surface area, number of coats, chimney height |
| Custom fabricated cap (non-standard flue) | $550-$780 | Material (galvanized, stainless, or copper), complexity |
Chimneys with significant spalling brick, rotted flashing, or liner damage beyond the cap or crown require additional work, priced separately and explained before you commit. We do not bundle mystery charges. Call (301) 719-5236 for an exact quote - estimates are free.
Why Gaithersburg Homeowners Call Hearthstone Chimney Co. for Olympia Chimney Work
We are not the cheapest sweep in Montgomery County, and we do not try to be. We are the company that shows up when we say we will, documents what we find with photos you can see, and puts the 90-Day Done Right Promise in writing with no arguing. Russell Haines has spent well over two decades in this trade, and his crew knows the difference between an Olympia Chimney cap that needs replacement and one that needs proper reinstallation.
Because we also work with DuraFlex, HeatShield, and Gelco systems, we can address whatever we find without calling in a second contractor. Most jobs finish in one visit. The price we quote is the price on the invoice. If it’s worth heating your home with, it’s worth doing the maintenance correctly.
FAQs
No. As an independent Olympia Chimney service provider, we use OEM or equivalent parts and document our work, which satisfies warranty requirements for product defects. Manufacturer warranties cover material flaws, not installation errors, so proper documentation matters. If you have a specific warranty concern, bring your paperwork to the appointment and we will review it with you. Call (301) 719-5236 to schedule.
A properly installed stainless steel Olympia Chimney cap typically lasts 15-20 years in Montgomery County, though the mesh may need cleaning annually and fasteners inspection every three to five years. The freeze-thaw cycling and occasional ice storms here stress mounting hardware more than cap bodies. We inspect both during every sweep. Call (301) 719-5236 for an exact quote - estimates are free.
We repair crowns when the damage is superficial cracking or minor spalling with sound structural concrete beneath. If the crown is thin, heavily deteriorated, or separating from the brick below, replacement is the honest recommendation. We make that call based on what the camera and hammer test show, not on what we would prefer to sell. Call (301) 719-5236 for an exact quote - estimates are free.
We stock common Olympia Chimney cap sizes, mounting hardware, and Gelco-compatible components. Unusual configurations or custom multi-flue spans may require one to three business days for fabrication or special order. We tell you before booking if your part is on the truck or needs to come in. Call (301) 719-5236 for an exact quote - estimates are free.
Once per year, ideally before burning season begins. In Gaithersburg, that means September or October for most homeowners. The cap keeps water and animals out; the crown sheds water away from the masonry below. Both fail gradually, then suddenly, and an annual inspection catches the gradual phase. Call (301) 719-5236 for an exact quote - estimates are free.
Written by Russell Haines, Owner, Hearthstone Chimney Co. at Hearthstone Chimney Co., serving Gaithersburg and nearby areas.