







Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Ameristar Windows & Doors: The Woodland Hills Owner’s Guide
If you have an Ameristar window or door that’s sticking, leaking air, or has a failed lock or roller, we can match the part and install it, usually within a few days of your call. Installed replacement parts for Ameristar products in Woodland Hills typically run $180 – $520 depending on whether we’re swapping a balance, a roller assembly, a lock set, or a full sash. Most owners notice the problem when a window suddenly drops when opened, a sliding door starts grinding, or a deadbolt no longer lines up with the strike plate. That’s usually not the frame failing. It’s a single replaceable component that Ameristar built to specific dimensions, and matching it correctly is the whole job.
Which Ameristar Models This Applies To
Ameristar has produced several lines over the past two decades: builder-grade single-hung and slider series commonly installed in Valley tract homes from the late 1990s onward, plus mid-grade vinyl picture windows and patio doors. The parts are not universal. A balance from an Ameristar 2000 series single-hung won’t fit a 5000 series, even if both windows are 36 inches wide. The channel depth on the vinyl jamb differs. We identify the exact series from the spacer bar or the label etched into the glass corner, which usually carries a manufacturing code in half-inch lettering inside one corner of the sash. If the label is gone, we measure the jamb channel and the shoe profile, then match to the Ameristar balance series it actually corresponds to. One gotcha we see regularly in Woodland Hills: homeowners order a “universal” balance online, then find the shoe shape doesn’t engage the pivot slot. Ameristar used a few non-standard pivot and shoe designs. For that reason, we keep a range of OEM Ameristar balances and rollers in our truck stock for the lines most common in LA County, and we’ll tell you plainly when a quality aftermarket part of equal gauge and dimension will work just as well. Aftermarket can save 20 – 30% on certain balances and glazing bead. For locks and keeper assemblies, we recommend OEM. The tolerances are tighter and the strike alignment is not worth chasing.
Styles & brands we work with







Signs Your Ameristar Windows & Doors Is Failing
- The window won’t stay up, or drops an inch after you open it. The balance system (the spring or coil mechanism inside the jamb) has lost tension. In Woodland Hills, the repeated hot-dry cycles bake the coil lubricant out faster than in coastal cities, and after 15 – 20 years the balance simply gives out. The fix is a new balance, not a new window.
- The window is hard to lift or makes a grinding sound. The shoe has jumped out of its track or the coil has bound up inside the housing. Forcing the window up makes it worse, and eventually bends the pivot bar. Replacing the shoe and balance as a set stops the damage.
- Your sliding door takes real effort to move. Ameristar patio doors ride on a pair of tandem steel rollers at the bottom of the door leaf. The wheel surface flattens over time, then chews into the aluminum track. Swap the rollers early and the track survives. Wait too long and the track itself may need replacement, which triples the cost.
- Air leaks around the sash, or you can see daylight at the corner of a closed window. The weatherstripping has compressed or the glazing bead has pulled away. Ameristar used a specific pile weatherstrip profile, and the replacement needs to match the kerf width or the window won’t seat right. This is a low-cost fix that we usually handle in under an hour.
- The lock doesn’t latch, or a handle spins without engaging. On Ameristar doors, the internal lock linkage wears and the latch won’t reach the keeper. Some owners assume they need a whole new door. We replace the mortise lock assembly or the keeper plate, and in most cases the door closes like new.
Replacement Cost & What’s Included

Here’s what we charge in Woodland Hills for the most common Ameristar part replacements, including labor:
- Spiral or block-and-tackle balance replacement (per window): $180 – $320
- Coil balance and shoe set (per window): $220 – $360
- Sliding door tandem roller replacement (both rollers, track cleaning): $240 – $420
- Lock assembly or keeper replacement (one door): $180 – $340
- Weatherstripping (full perimeter, one window): $120 – $250
- Full sash replacement for an Ameristar single-hung: $350 – $520
The price includes the part, labor, disposal of the old components, and a written line-item quote before we start. You know the number up front, and it doesn’t change unless we open the window and discover something genuinely different from what we could see at the estimate. Our workmanship is covered by a 365-Day Done Right Promise: if anything we installed isn’t right within a year of the completion date, we return and fix it at no cost to you. The part manufacturer’s own warranty on the component is additional, and we’ll give you the paperwork for it.
See the difference
Before
After
Before
After
Before
AfterDIY or Call Us?
Some things you can safely do on your own. You can clean a sliding door track with a dry brush and vacuum, eyeball whether weatherstripping is torn, and tighten visible screws on a handle set. If the problem is a dirty track, a $10 brush fixes it. Balance systems are different. The spring in an Ameristar block-and-tackle balance is under constant tension, and removing it without the right sequence can send the sash or the spring assembly flying. Patio door roller swaps require lifting a heavy glass panel out of its frame, which two people can manage, but dropping it is a real possibility and a new tempered panel costs more than the repair itself. If you’re not certain what’s failing, call us at (831) 290-6866 and describe what the window or door is doing. We’ll tell you over the phone whether it’s worth a service visit, and the estimate is free.
FAQs

Ameristar vinyl windows and doors typically last 25 to 35 years before the frame itself is done, but the moving parts, balances, rollers, and locks, usually need replacement around year 15 to 20, sooner in Woodland Hills because the long dry heat cycles age plastic and lubricants faster than in coastal climates. A well-maintained Ameristar window can go its whole life with two or three part swaps instead of a full replacement. Call (831) 290-6866 if you’re at that point and want an honest read on repair versus replacement, and we’ll tell you which side of the line your window is on.
No, balances and rollers are sealed wear items and once they fail, the practical fix is a new one. A repair that involved re-tensioning a coil balance or rebuilding a roller wheel would cost more in labor than the replacement part, and it would still fail again within a year. We quote the full replacement honestly because it’s the cheaper long-term path, and the 365-Day Done Right Promise covers the installation. Call (831) 290-6866 for a written quote before any work begins.
Most balance, roller, and lock replacements take 45 to 90 minutes per window or door, assuming the part is on the truck. We carry common Ameristar balances, rollers, and hardware for the model lines most often found in Woodland Hills homes, so in many cases the swap happens in a single visit with no follow-up trip. More unusual series may require a one-week order time. Call (831) 290-6866 and we’ll confirm whether your part is already in our inventory before you schedule.
We stock the fast-fail items: coil balances, block-and-tackle balances, tandem rollers, lock sets, keepers, and weatherstripping for the Ameristar series that were installed in most Southern California tract construction. That’s what lets us fix most Ameristar issues the same day we arrive. Uncommon series, specialty hinge sets, or full sash replacements sometimes require ordering from the manufacturer and take five to seven business days. Call (831) 290-6866 and give us the code from the corner of the glass, and we’ll tell you straight away whether your part is on the shelf.
Ready to Get Your Ameristar Window or Door Working Again?
Tell me what you need done. I’ll tell you what it takes and what it costs. Then we get to work. Call Mason Remodeling Co Woodland Hills at (831) 290-6866 for a free estimate. We serve Woodland Hills and nearby areas, and we stock Ameristar-compatible parts alongside material lines we use across our remodeling work, including KraftMaid, Cambria, and Silestone. Every repair starts with a written price, and every job is done by a background-checked, uniformed technician whose name and photo we send you before we knock on the door.
Written by Isaac Pruett, Owner, Mason Remodeling Co – Woodland Hills, CA at Mason Remodeling Co Woodland Hills, serving Woodland Hills and nearby areas.


