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CWS Construction in Ontario, CA | Mason Remodeling
We provide independent CWS service across Ontario, from cabinet refacing in older track homes to full standing seam metal roof replacements, as well as Ontario Bathroom Remodeling. What separates our CWS work here from a generic contractor’s is that we know how Ontario’s inland heat and dry air punish these specific products. If you’re dealing with swollen cabinet boxes, countertop seam separation, or a metal roof that pops and groans every afternoon, call (803) 680-2547 and we’ll give you a straight answer on what it takes to fix it.
Why Ontario Residents Choose Us for CWS Service

We’ve spent years working on CWS cabinetry, countertops, and metal roofing across Ontario, and we’ve seen the same failure modes repeat themselves on the same streets. Seasonal expansion loosens cabinet box joints. Unshaded west-facing windows bake quartz countertop seams until they separate. Metal roof fasteners back out from daily thermal cycling. Most contractors treat these as generic problems. We treat them as CWS-specific ones, because the fix differs depending on the product line, the year it was installed, and which part of Ontario you live in.
Isaac Pruett, our owner, grew up watching his dad do finish carpentry and spent two decades remodeling homes across Southern California before Mason Remodeling made CWS work a focus. He still walks every Ontario jobsite himself before we call the job done. You can read more about the way we operate on our CWS sales & service page. And if you’re wondering whether we’re authorized by CWS directly, the honest answer is no. We’re an independent service provider. That independence means we stock OEM-compatible parts and also know which aftermarket components actually hold up for discontinued lines, with trade-offs explained in plain language before you spend a dollar.
Styles & brands we work with







Common CWS Construction Problems We Solve in Ontario
- Cabinet box joints loosening and door misalignment. Ontario summers routinely cross 100°F, and winters dip into the 40s overnight. That swing makes wood expand and contract, and CWS cabinet boxes, especially the semi-custom wood lines, feel it at every glued joint. Doors start rubbing, hinges sag, and what looked square a year ago now gaps at the corner. We re-square, re-glue, and swap in CWS-compatible hinge plates where the original geometry failed.
- Particleboard and MDF cabinet bases swelling from under-sink leaks. Older Ontario homes, particularly 1970s and 1980s builds, often lack the bath and kitchen ventilation newer houses have. A slow under-sink leak saturates the cabinet base before you ever see water on the floor. The MDF crumbles, the sink starts dipping, and the doors won’t close. We cut out the damaged section, replace it with a sealed material, and set the sink back level.
- Quartz and granite countertop seam separation and edge chipping. Direct sunlight through unshaded windows causes thermal movement that pulls seams apart and leaves edges brittle. In Ontario homes with big south or west-facing kitchen windows, we see this constantly. We re-bond seams with color-matched adhesive and repair chips with a filled, polished patch that blends into the surrounding stone.
- Metal roof fastener back-out and panel expansion noise. Ontario’s inland heat cycles a standing seam panel through daily expansion and contraction. Fasteners with standard washers loosen, then leak at the penetration points. The roof also groans and pops as panels slide against the clips. We re-torque or replace fasteners with oversized neoprene washers and reset floating clips where panels have drifted.
- RTA cabinet component failure after years of use. CWS Ready-to-Assemble cabinets are built from flat-packed components with cam locks and dowels. After years of loading and unloading, cam locks strip and shelf pins wallow out. We rebuild the boxes with stronger hardware or reface the whole run if the boxes are salvageable.
CWS Service in Ontario: What Local Conditions Mean for Your Equipment

Ontario’s inland location means summer temperatures regularly exceed 100°F, and that heat does something specific to CWS standing seam metal roofing: a 20-foot panel expands and contracts up to a quarter inch every day. Installers who learned their trade on the coast often set fasteners with standard washers, which lose their seal as the panel moves. The result is leaks at fastener points that show up as water stains on ceilings months after installation. We set every CWS metal roof fastener with oversized neoprene washers that compress and rebound with the thermal movement. It’s a small detail that coastal crews overlook and Ontario homeowners pay for later.
Drive through neighborhoods like Los Olivos, just south of the airport, and you’ll see CWS metal roofs from the last decade showing uneven panel lines where expansion has shifted the floating clips - a different story from what we see providing Rancho Cucamonga Cws service. Down near Cypress Avenue and Vineyard Avenue, we’ve re-torqued more fasteners on these roofs than we can count. The fix isn’t complicated, but it has to be done by someone who understands the panel system, not a roofer who treats every metal roof like a pole barn.
CWS Models & Products We Service in Ontario
We work on the full CWS catalog that shows up in Ontario homes, including the Ready-to-Assemble kitchen cabinet line, the Semi-Custom Wood Cabinets, and CWS Quartz and Granite Countertops. On the exterior, we service and repair CWS standing seam metal roofing panels. For cabinet refacing and repairs, we use OEM CWS hardware and panels when they’re still available to match your existing finish and keep structural integrity. When a line has been discontinued, we source quality aftermarket components and tell you exactly what the difference means before we install them. If repair costs exceed 50% of replacement, we’ll say so plainly and recommend a full replacement instead of patching something that will fail again in two years.
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AfterCWS Service Pricing in Ontario

Here’s what CWS work typically costs in Ontario, based on the jobs we’ve completed across the city, including work as a General Contractor in Ontario:
| Service | Typical Range |
|---|---|
| Cabinet Installation & Refacing | $4,000 – $13,000 |
| Quartz & Granite Countertops | $2,000 – $6,500 |
| Standing Seam Metal Roof | $15,000 – $40,000 |
Your actual price depends on cabinet count, countertop square footage, and roof panel condition. Every estimate we give is written, line-itemed, and fixed before any work starts. No verbal quote that balloons later. Call (803) 680-2547 to schedule a free estimate in Ontario, and we’ll walk the job with you and price it accurately.
Serving Ontario, CA - Our Local Coverage Area
We’re based in the Ontario area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs – CWS Construction in Ontario
We use OEM CWS hardware and panels whenever they’re available, because matching hinges, drawer slides, and door profiles keeps the refaced cabinet looking and functioning like the original. When CWS has discontinued a line, we source aftermarket components and explain what you’re trading off before you agree to anything. Call (803) 680-2547 for a quote on your specific cabinet line.
Ontario’s summer temperatures push CWS standing seam panels through daily expansion and contraction cycles of up to a quarter inch per 20-foot panel. Over time, this loosens fasteners and can cause leaks at the penetration points. We set fasteners with oversized neoprene washers designed to handle that movement, which prevents the problem from coming back. Call (803) 680-2547 if your metal roof is leaking or making noise.
Yes, most chips can be filled and polished to match the surrounding quartz. The repair holds up as long as the countertop isn’t being flexed or stressed at the chip location. For chips near the edge or along a seam, we’ll assess whether the structural integrity is still sound before recommending repair or replacement. Call (803) 680-2547 and we’ll take a look, free of charge.
Most kitchen cabinet installations in Ontario take 3 to 5 working days from tear-out to final trim, depending on the cabinet count and whether we’re refacing or replacing boxes. If countertops are part of the job, add one to two days for templating and installation. We’ll give you a written schedule with your estimate so you know what’s happening each day.
Yes. If a storm has pulled up a panel or driven rain through a fastener point, call (803) 680-2547 and a live person will answer, day or night. We’ll get a crew out to tarp the damaged area immediately and schedule the permanent repair once conditions are safe. Estimates are always free, and the tarp service is billed at our standard rate, not an emergency markup.
Service Areas Near Ontario
We serve Ontario and the surrounding communities across the Inland Empire and into Los Angeles County. If you’re in Los Angeles, Sacramento, Fresno, San Jose, or San Francisco, we can help. We also maintain dedicated CWS service coverage for CWS service in Elk Grove and CWS service in Santa Rosa for our Northern California clients, and our Ontario service area page covers the full local footprint.
Book Your CWS Service in Ontario Today
We recently refaced a 1990s CWS oak kitchen off Los Olivos Drive near Ontario International Airport, where cabinet doors had swollen from years of heat and cooking moisture. Our team replaced the hinge plates with CWS-compatible soft-close hardware and installed new quartz countertops with a matching backsplash, wrapping the job ahead of schedule even with a last-minute island addition. Know who’s coming, know what it costs, know it’s backed up. Everything else is just noise. Call (803) 680-2547 for your free Ontario estimate.
Written by Isaac Pruett, Owner at Mason Remodeling, serving Ontario since 2004.











