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You get a price before we start. It does not change when the truck arrives.
Clopay Weather Seal Replacement: The Longmont Owner’s Guide
Clopay weather seal replacement in Longmont typically runs $85-$180 installed, and we keep the common profiles on the truck so it’s usually a same-day fix. What you’re looking at is the vinyl or rubber strip along the bottom of the door that folds flat, cracks, or tears away from the aluminum retainer. Most Longmont homeowners spot it when daylight shows under the door in winter, or when the garage starts collecting dust from those spring winds that roll through east of Hover Street.
We’re an independent service provider, not affiliated with Clopay, but we stock replacement seals sized to their doors because Clopay installed a large share of the garage doors in Longmont homes built after 2005. Marcus Deller’s approach on this repair follows the shop rule: name the part, quote the range, then do the work. You’ll get a written price before the old seal comes off.
Key Takeaways
- Installed price range: $85-$180, quoted in writing before work starts
- Same-day availability: Common Clopay seal profiles are stocked on our trucks
- What fails: Colorado UV exposure and freeze-thaw cycles crack the vinyl, usually at the ends first
- What you get: Photo record of the worn seal, written scope, and the 365-Day Done Right Promise
Which Clopay Models This Applies To

Clopay uses a T-style.bottom seal on most residential doors made after roughly 2000, including the Gallery, Coachman, Bridgeport, and Value Plus lines. The vinyl T-channel slides into an aluminum or steel retainer that’s screwed to the bottom panel. The width that matters is the flat portion of the seal: most Clopay residential doors take a 3-1/4-inch or 4-inch profile, and the bulb or T-channel depth varies by retainer year.
If you have a Clopay tongue-and-groove door from the IntelliCore line, the retainer is often integrated into the bottom section and the seal is a friction-fit compression style, not the screw-mounted retainer. That’s the compatibility gotcha we see often: a homeowner buys a universal seal off a shelf, it doesn’t seat in the Clopay retainer, and the door still leaks. Clopay-branded seals (from their parts catalog) run $35-$70 for the strip alone; quality aftermarket equivalents in the same 3-1/4 or 4-inch widths typically run $20-$45 and last just as long when the vinyl is UV-stabilized. We’ll show you what’s on the door and match it before anything is ordered.
Before
AfterSigns Your Clopay Weather Seal Replacement Is Failing
- Visible light under the door in the corner. This usually means the seal has compressed or torn at the ends, which is exactly where freeze-thaw hits hardest in Longmont winters.
- Water staining or a wet floor near the door after rain or snow melt. A cracked seal channels water along the retainer rather than shedding it outward, and the first sign is typically a small puddle under the door’s interior edge.
- Dust and debris blowing into the garage. Longmont’s spring wind season tests seals from March through May, and a torn seal lets in a surprising amount of the dust that comes off the foothills.
- The vinyl feels stiff, brittle, or flaking when you touch it. Colorado’s 300+ days of sun degrade the plasticizer in cheap vinyl. Once it stops bending, it’s near the end.
- Rodent or insect activity in the garage corner. A gap in the bottom seal is a standing invitation for mice in fall. Clopay seals that appear intact can still have a chewed-through corner.
Replacement Cost & What’s Included

Clopay weather seal replacement in Longmont runs $85-$180 installed, depending on the door width and whether the retainer needs work. Here’s the breakdown:
| Line Item | Typical Range |
|---|---|
| Seal material (3-1/4″ or 4″ Clopay-compatible, UV-stabilized) | $20-$45 |
| Retainer work if needed (straighten or resecure) | $15-$35 |
| Labor and cleanup | $50-$100 |
You’ll get a flat, written price and scope before we touch anything, which is Clause 1 of The Haven Standard. That price doesn’t change once the old seal comes off. Included in every weather seal replacement: removal of the old seal, inspection of the retainer, installation of the new seal, and a photo record of what was found and what was done. The work is covered by the 365-Day Done Right Promise: if the seal fails within a year, we replace it. No invoice surprises, no handshake-only warranty.
DIY or Call Us?
This part is one of the safer garage door repairs to inspect yourself. If you can see daylight under the door when it’s closed, or the vinyl feels brittle to the touch, you’ve diagnosed a failing seal without touching anything dangerous. What we caution against is prying the old seal out of a corroded retainer, especially on older Longmont doors near Roosevelt Park where the aluminum channel can be pitted and stubborn. A slip with a flathead screwdriver on a garage floor usually ends with a damaged retainer, and a bent retainer means the new seal won’t seat.
We stock the common Clopay profiles on the truck, so most weather seal replacements are one visit. If you’d rather just have it done, call (970) 528-5851 and we’ll confirm the door model over the phone, bring the right seal, and hand you a written price before we unload a tool.
FAQs

In Longmont’s climate, a quality UV-stabilized Clopay-compatible seal typically lasts 6-10 years before the vinyl stiffens or the ends tear from repeated freeze-thaw cycles. Doors that face west or south take more direct sun and may need a replacement on the shorter end of that range. Call (970) 528-5851 and we can tell you what we’re seeing on your existing seal.
No. Torn or cracked vinyl weather seal cannot be reliably patched; the material fatigues through its cross-section and any patch will split again within months. The seal is a wear part meant to be replaced as a single strip, which is why we stock it and price it as a simple swap.
A standard Clopay weather seal replacement on a single-wide or double-wide door takes 30-60 minutes, including removing the old seal, checking the retainer, installing the new strip, and testing the door cycle. The price is quoted and agreed before we start, so the visit time is spent on the work, not on negotiation.
Yes. We carry the common T-style Clopay-compatible profiles in 3-1/4-inch and 4-inch widths on the truck, along with seals for LiftMaster, Chamberlain, and Genie opener systems. If your door has an unusual retainer profile, we’ll measure it on site, order the exact strip, and schedule the return visit at the same written price.
Call for a Written Quote Before the Work Starts
If your Clopay door is leaking, gaped, or showing a cracked bottom seal, call (970) 528-5851. You’ll get a flat, written price for the weather seal replacement before anything is removed, and a documented photo record when the job’s done. We’re independently owned and operated under The Haven Standard, and we answer the phone with a live person, 24/7, including emergency calls.
Written by Marcus Deller, Owner, Servo Garage Doors Longmont at Servo Garage Doors Longmont, serving Longmont and nearby areas.






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