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CGI Bathroom Remodeling: The Riverside Owner’s Guide
CGI bathroom remodeling in Riverside typically runs $9,000 to $28,000 installed, depending on the size of the bath, what’s behind the walls, and the fixture and finish package you choose. We stock and install CGI-compatible enclosure panels, trim kits, and associated hardware, and we can usually start within a week of the written estimate. Most Riverside homeowners call us after they notice a failing panel or seal, a door that no longer closes square, or water damage creeping into the baseboard around an older CGI surround or tub enclosure.
If you’re reading this, chances are you’ve already spotted the warning sign: a crack in a corner panel, staining at the seam, a door that drags on the track, or that unmistakable softness in the drywall behind the surround. CGI enclosures are solid products, but like anything that handles daily water and shifting temperatures in the Inland Empire, they have a life cycle. The good news is that a CGI bathroom remodel in Riverside rarely means a complete gut. Often it’s the surround, the base, or the door assembly that failed, and the rest of the bath is fine.
Which CGI Models This Applies To

This page covers the bathroom product line sold under the CGI name, with the most common Riverside installations being the CGI Elegance Series, the Trailways Series, and the Classic Series acrylic and composite wall surrounds, tub surrounds, and shower bases. If you’re unsure which series you have, check the back side of the access panel or the lower corner of the largest wall panel for a foil label or embossed stamp that includes a manufacturing date and series code. The Trim Kit part numbers are also printed on the inside lip of the shower base where the wall meets the base.
One compatibility gotcha that trips up Riverside homeowners: CGI changed the flange profile on their wall panels in the early 2010s. A panel made before that change will not marry cleanly to a new base from a different year without a visible seam gap that will eventually leak. That’s why we always measure the old panel thickness and flange angle before we quote a replacement: an owner who just orders “a CGI panel” online discovers at install that it does not match their existing base. When a panel is no longer available, we recommend either matching the entire surround to the existing base or replacing the base and surround together. On the OEM-versus-aftermarket question, for CGI shower doors and trim, OEM is worth the extra money. Aftermarket door sweep and roller kits exist, but the track tolerances on CGI doors are tight enough that we have seen off-brand rollers groove and jump in under a year.
Styles & brands we work with






Signs Your CGI Bathroom Remodeling Is Failing
- Caulk line separation at the panel seams or the base joint. This is the earliest and most common failure. The panel flexes with temperature shifts, the caulk pulls away, and water gets behind the surround. Once the substrate gets wet, the fix is no longer a tube of caulk.
- Soft drywall or bubbling paint at the baseboard outside the shower. That means water has been escaping the surround for weeks or months, not days. The damage has usually run down the wall cavity, and simply resealing the enclosure will trap moisture behind the wall.
- A shower door that hangs crooked or jumps the track. On a CGI door, this is almost always a worn roller assembly or a bent top track from someone leaning on the door. The panel itself is usually fine, but the hardware is done.
- Cracks in the shower base, usually radiating from the drain hole. Riverside gets serious heat, and a CGI base sitting on an unleveled subfloor will flex enough at that weak point to crack within a few years. Water then leaks into the floor framing below.
- Persistent mildew smell in the bathroom even after cleaning. That odor is not a cleaning problem. It is water sitting behind the surround or under the base, and it will keep coming back until the source is removed.
See the difference
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After
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Before
AfterReplacement Cost & What’s Included

A full CGI bathroom remodel in Riverside runs $9,000 to $28,000. A smaller bath, say a 5×8 with a tub-to-shower or tub-to-CGI-surround swap and no moving of plumbing, tends to land between $9,000 and $14,000. A larger primary bath with a new CGI surround, base, custom door, a new vanity top, and some tile work climbs into the $16,000 to $28,000 range. The three things that move the number the most are plumbing relocations, the condition of the framing and subfloor once we open the walls, and whether you are keeping the existing CGI base or replacing everything.
Our price is a written number, not a range. Before we start, you get a line-item quote that includes the CGI-compatible panels, base, trim, door hardware, faucet, any tile or vanity work, demo, substrate repair, and installation. That number on day one is the number on the invoice. If something changes because we found rot or a bad subfloor, we stop and give you a written change order before we spend another dollar. Every CGI bathroom remodel we do in Riverside carries our 365-Day Done Right Promise: if anything fails inside the first year, we come back and fix it at no charge.
DIY or Call Us?
You can safely do a few things before calling: take a flashlight and check the caulk seams, run your hand along the baseboard outside the shower for swelling, and check whether the door still rolls true. What we would not recommend is pulling off a CGI surround panel to “take a look” unless you already know you are replacing it. Once that panel is separated from the wall, the waterproofing is compromised, and putting it back with caulk is how you turn a $900 repair into a $9,000 remodel.
Also be aware that some older Riverside homes run electrical wiring in the wall cavity behind bathroom enclosures. Opening that wall without knowing what is in there is a good way to end a weekend with an electrician’s bill. We’ve done plenty of CGI bathroom work in older Arlington neighborhood homes where exactly that was hiding behind the surround. If the panel is cracked, the base is done, or the door is off its track, call us at (341) 895-1170. We’ll come out, give you a written price for the CGI-compatible replacement, and you’ll know exactly what you’re in for. Give you a number before we pick up a tool, that’s just how this works.
FAQs

A CGI acrylic or composite surround in Riverside typically lasts 12 to 20 years before panels crack, seams fail, or the base flexes out of tolerance, with hard water and the Inland Empire’s summer heat cycles pulling that number toward the lower end.
Between the mineral content in Riverside’s water and the temperature swings inside a wall cavity in August, the plastic expands and contracts constantly, and every seam is a future weak point. We can inspect your enclosure and tell you whether it has years left or months. Call (341) 895-1170 to schedule a look, and we’ll give you an honest read without pushing a replacement you don’t need yet.
No, a cracked CGI panel cannot be reliably repaired; acrylic and composite surrounds are molded as single pieces, and any patch or fill will fail again, usually within months, because the panel continues to flex with temperature changes.
We get asked this a lot, and the honest answer is that a repair buys you a few months at most. The crack itself is a symptom of a panel that has reached the end of its flexible life. Replacing the panel or the surround is the only fix that holds.
A typical CGI bathroom remodel in Riverside takes 5 to 10 working days from demo to final walkthrough, depending on whether we discover subfloor or framing issues and whether plumbing lines need to move for the new layout.
The biggest variable is what we find behind the surround once the panels are off. If the substrate is dry and the framing is sound, the job moves fast. If there is rot from a longtime leak, we rebuild it properly before the new surround goes up, and that adds a day or two.
We stock common CGI-compatible door rollers, sweeps, trim kits, and seal hardware on our trucks in Riverside, and we can typically have replacement panels and bases on site within 3 to 7 business days from our supplier network.
Because we work with CGI-compatible components alongside the same trade brands you’d expect from us, including KraftMaid, Cambria, and Silestone for the surrounding bathroom finishes, we can match your existing enclosure rather than forcing you into a full remodel when the failing part is one door assembly or one cracked base. Call (341) 895-1170 and we’ll tell you what we can bring to your door this week.
Written by Trevor Nash, Owner, Penhallow Remodeling Riverside at Penhallow Remodeling Riverside, serving Riverside and nearby areas.


