Cover Garage Conversion ADU: The San Francisco Owner’s Guide
If your Cover garage conversion ADU has a failing weather seal, door sensor, or panel seam, we stock the replacement parts and can usually have them installed the same week in San Francisco. Typical installed costs for Cover-compatible parts on garage conversions run $180 – $640 depending on the component, and the work carries our full 365-Day Done Right Promise. Most owners discover the problem the way our techs do: a draft near the floor line, a door that no longer closes flush against the converted garage frame, or moisture showing up along the seam where the original garage structure meets the new ADU envelope.
Sutton ADU San Francisco is an independent service provider. We are not affiliated with Cover, but we work with their product line regularly enough to know which parts fail first on San Francisco garage conversions and what actually fixes them.
Which Cover Models This Applies To
Cover’s garage conversion ADU systems share common framing and enclosure components across their standard module widths, but the compatibility gotcha is in the sill and header details. Cover uses a proprietary sill extrusion on their conversion packages, and the replacement weather seal must match the extrusion depth exactly. We’ve seen aftermarket seals that look right and leak within a season because they’re 2mm too shallow for the Cover channel. If you can find the module label on the interior door frame or the back corner post, it usually lists the fabrication date and panel series, which tells us which seal profile and corner gasket your unit actually needs.
For the decision between OEM Cover parts and quality aftermarket equivalents: on structural items like corner posts and panel joints, we recommend OEM. On consumables like seals, door sweeps, and sensor brackets, a well-specified aftermarket part often lasts just as long and costs less. We stock both, and we’ll tell you which way we’d go on your specific unit before you spend a dollar.
Signs Your Cover Garage Conversion ADU Is Failing
- Drafts along the floor line near the original garage door opening. The sill seal on Cover conversions takes a beating from San Francisco’s wet winters and the slight settling common on older garage slabs. Once it compresses or tears, air moves freely under the wall panel.
- Moisture staining at the seam where the new walls meet the original garage frame. This is typically a failing panel gasket or a corner seal that has pulled away from the extrusion. Left alone, it invites mold inside the wall cavity, which turns a $200 seal replacement into drywall and insulation work.
- The entry door no longer closes flush against its frame. On garage conversions, the entry door is often hung on a panel that shifts slightly as the structure settles. If the door binds at the top or shows daylight at the latch side, the panel alignment or the door sweep needs attention.
- Condensation inside the unit, especially after rain. San Francisco’s fog and humidity expose ventilation and seal failures quickly. Persistent interior condensation on the wall facing the prevailing wind usually means a perimeter seal has failed somewhere along that run.
- Visible cracking or gapping in the panel joint lines. Cover panels are engineered to flex, but the joint compound and gaskets age. Hairline cracks that open to more than 1/16 inch during temperature swings indicate the joint seal material has lost its elasticity.
Replacement Cost & What’s Included
For Cover garage conversion ADU parts installed in San Francisco, here’s what we typically see:
- Sill weather seal replacement: $180 – $320 installed, including removal of the old seal, cleaning the extrusion, and fitting the correct Cover-profile replacement.
- Panel gasket or corner seal replacement: $260 – $480 installed. Price depends on linear footage and whether we need to pull a panel edge to seat the gasket correctly.
- Door sweep and threshold adjustment: $140 – $260 installed, including realigning the door if it has shifted.
- Sensor or bracket replacement on automated doors: $190 – $380 installed, depending on the sensor type and wiring condition.
Every quote is a written price before we start. No change orders, no surprise additions when the panel comes off. The work is covered by our 365-Day Done Right Promise: if the repair fails within a year of completion, we come back and make it right at no charge. Miles Hartwell insists on that standard for every job we take in San Francisco, because a garage conversion that leaks again in six months is not a finished job.
DIY or Call Us?
You can safely check a few things yourself: run your hand along the bottom seal to feel for tears, look for visible gaps at panel joints, and note whether condensation appears in consistent spots after rain. That information helps us quote accurately over the phone. What you shouldn’t do is pull panel edges or attempt to reseat gaskets without knowing the Cover extrusion details, because a bent panel edge turns a seal job into a panel replacement, and that’s a much bigger bill. There’s no high-tension or electrical hazard on these particular parts for most units, but the physical risk is to the panel itself. If you’re not sure what you’re looking at, call us at (831) 272-7212 and describe what you see. A straight answer now saves a painful conversation later.
FAQs
In San Francisco’s coastal climate, sill seals on Cover garage conversions typically last 4 to 7 years before the constant moisture and temperature swings compress the material past its recovery point. Units in the Sunset and Richmond districts, closer to ocean air, tend to wear seals faster than those in warmer inland neighborhoods like Noe Valley or the Mission. When you call us for a quote, we’ll give you a straight assessment of whether you’re at end-of-life or just need an adjustment.
In most cases, no. Once a Cover seal or gasket has torn, compressed, or lost elasticity, patching it just buys you a few months and usually fails again during the next heavy rain. The cost difference between a patch job and a proper replacement is small enough that replacement is the honest recommendation. Call (831) 272-7212 and we’ll tell you which one your unit actually needs.
Most single-part replacements on Cover garage conversions take 2 to 4 hours on site, including setup, removal of the old part, installation, and a check of the surrounding components. Panel gasket replacements that require removing a panel edge can take most of a day. We’ll give you a time estimate along with your written price before any work begins.
We stock the most common Cover garage conversion replacement parts on our trucks: sill seals, panel gaskets, corner seals, door sweeps, and sensor brackets. Specialty or rarely replaced items may need to be ordered, which typically adds 3 to 5 business days. We also carry compatible parts for Abodu and Dvele conversions, so if you have a mixed system, we can likely address it in one visit. Call (831) 272-7212 to confirm availability for your specific unit.
Written by Miles Hartwell, Owner, Sutton ADU San Francisco at Sutton ADU San Francisco, serving San Francisco and nearby areas.
