Cover New Detached ADU: The San Antonio Owner’s Guide
If your Cover new detached ADU needs a replacement part, we stock Cover-compatible components at Seedling ADU San Antonio and typically install them for $150 to $1,800 depending on what failed. Most owners discover the problem the same way: a door that no longer seals against Texas heat, a panel that’s delaminating after a hard rain, or flashing that’s pulled away from the wall and started letting water behind the siding. You don’t have to live with it, and you don’t have to rip anything apart to find out what’s wrong. Call us at (210) 981-6358 and we’ll tell you what you’re looking at.
Cover builds its ADUs as precision-panel systems, which is good news when a single part wears out. Instead of framing from scratch, the panels are manufactured to lock together, so a failed connector, gasket, or corner piece is replaceable without demolishing the surrounding structure. That’s what we spend most of our time on: matching the right generation of Cover panel to the right gasket, seal, or hardware. Ben Ortega has walked enough of these units around San Antonio, including properties near the King William Historic District, to know that the difference between a $200 fix and a $4,000 fix usually comes down to catching the failure early.
Key takeaways:
- We stock common Cover panel gaskets, seals, fasteners, and door components for same-week installation in San Antonio.
- Installed pricing runs from $150 for simple hardware up to $1,800 for larger panel or door assembly work.
- You get a written price before any work begins, and every repair is backed by the 365-Day Done Right Promise.
- Seedling ADU San Antonio is an independent service provider. We are not affiliated with Cover, but we work on their units daily.
Which Cover Models This Applies To
Cover has produced several generations of its detached ADU line, and the parts are not always interchangeable between them. Panels manufactured before 2021 tend to use a thicker gasket profile than the current production run, and mixing the two in one wall assembly creates a visible seam that leaks under wind-driven rain. If you can find a serial number on the panel edge or the manufacturer’s label inside the door frame, take a photo of it before you call. That number tells us which run your unit came from, and it tells us which gasket, trim, or connector to bring on the truck.
This page covers parts for the Cover new detached ADU product line, not its earlier prototype or accessory buildings. The compatibility gotcha most San Antonio owners run into is this: Cover’s newer panels use a snap-in channel for trim and flashing that does not accept older screw-on profiles. We keep both profiles in stock because we’ve seen both on the same property more than once. For the panels themselves, we default to Cover-spec components when available. There are quality aftermarket gaskets and fasteners that perform well in our climate, but anything that touches the weather barrier should match the original spec. Dry heat is hard on rubber. UV exposure in San Antonio summers will crack an undersized aftermarket gasket in two years, where the factory part lasts five to seven.
We also service ADUs built by Abodu and Dvele, which use similar panel systems but different gasket sizes. If you’re not sure what you have, a photo of the wall seam from six inches away will usually settle it.
Signs Your Cover New Detached ADU Is Failing
- Visible gaps at wall or roof panel seams. Panels expand and contract with temperature, and San Antonio’s 40-degree day-night swings in spring will eventually fatigue the sealant. When you can see daylight or feel air moving at a seam, water is already working its way in.
- Musty smell inside after rain. That’s trapped moisture behind the interior finish. Panelized construction hides leaks well because water travels inside the wall cavity before showing up as a stain. By the time you smell it, the gasket or flashing has been failing for weeks.
- Doors that stick or no longer latch cleanly. Panel movement puts pressure on the door frame. A few millimeters of settlement is normal, but a door that needs a shoulder to close is telling you the panel above or beside it has shifted.
- Trim or flashing pulling away from the exterior wall. In San Antonio’s freeze-thaw micro-cycles, the adhesive on exterior trim loses its bond. Loose trim isn’t cosmetic. It’s the first opening where wind-driven rain gets behind the siding.
- Rust streaks below fasteners or at panel corner brackets. The hardware Cover uses is coated for outdoor exposure, but the coating wears over time, especially on west-facing walls that take full afternoon sun. Rust streaks mean the fastener is no longer sealed and is transferring moisture into the panel core.
Replacement Cost & What’s Included
Here’s what we charge in San Antonio for the most common Cover ADU replacement jobs, parts and labor included:
| Repair | Installed Price Range |
|---|---|
| Panel gasket replacement (single seam) | $150 – $400 |
| Fastener and corner bracket replacement (per panel) | $200 – $500 |
| Door re-alignment and weather seal replacement | $250 – $600 |
| Exterior trim and flashing replacement (per wall) | $400 – $1,000 |
| Full wall panel replacement (exposed seam failure) | $1,200 – $1,800 |
The spread depends on access, panel age, and whether we’re matching an old gasket profile that requires custom cutting. You get a written price before we touch anything, and the quote includes cleanup. Our crew shows up background-checked and uniformed, shoe covers go on before they step inside, and you get a photo of the finished work and the clean floor before we leave. That’s the Cedarwell Care Promise, and it applies to every repair we make. If the fix doesn’t hold, the 365-Day Done Right Promise covers it. We make it right. In writing.
DIY or Call Us?
Some of this you can check yourself. You can look for visible gaps at panel seams, test whether your ADU door latches without force, and run your hand along exterior trim to feel for loose sections. That kind of inspection is safe and useful. What you should not do yourself is pull off trim, loosen panel fasteners, or apply sealant to a seam that’s already failed. The panels are under structural load, and once you break the weather barrier, you’ve opened the wall to water before the new sealant cures. In a San Antonio thunderstorm, that’s all it takes. Leave that to a trained tech who knows how to support the panel while the hardware is out.
Tell me what you need the space to do, and we’ll figure out the rest from there. If you’d rather we handle it, call (210) 981-6358 and we’ll schedule a look.
FAQs
In San Antonio’s sun and heat, factory panel gaskets typically last 5 to 7 years before they lose flexibility and start to crack. Fastener coatings on west-facing walls tend to wear at the 4-year mark. If you’re past year five, it’s worth an inspection even if nothing looks wrong. Call (210) 981-6358 to schedule one.
Usually not. Gaskets and seals cannot be patched reliably once they’ve cracked or compressed, because the failure point continues to move with panel expansion. Fasteners can sometimes be re-torqued, but if there’s rust present we recommend replacement. A written quote will tell you which one applies before you commit.
Most single-seam gasket or door seal replacements are done in half a day. Wall panel replacement can take one to two days depending on weather and access. We’ll give you a realistic timeline before we schedule, and we’re on time.
We keep common Cover panel gaskets, fasteners, corner brackets, and door seals stocked in San Antonio. For a full panel replacement, we order the panel to match your serial number, which usually takes a week. If you send us a photo of the label, we’ll tell you which path applies before you book. Estimates are free.
If your Cover new detached ADU has a failing part, don’t wait for the next storm to prove it. Call Seedling ADU San Antonio at (210) 981-6358 for a free estimate and a written price before any work begins.
Written by Ben Ortega, Owner, Seedling ADU San Antonio at Seedling ADU San Antonio, serving San Antonio and nearby areas.
