Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Cover Windows & Doors: The Los Angeles Owner’s Guide
We stock and install Cover-compatible windows and doors across Los Angeles, with a typical replacement in LA running $5,310 to $17,700 depending on unit size, frame condition, and whether you’re replacing a single window, a door, or a full opening. Most owners discover a failing Cover window or door the way our techs do on a first visit: a sash that no longer closes tight against the frame, condensation that wasn’t there last spring, or a lock that takes two hands to throw. The good news is most Cover units fail in predictable spots, and we keep the common replacement parts on the truck when we roll out.
Which Cover Models This Applies To
Cover windows and doors came in several series over the years, and the first job on any service call is identifying which one you have. Look for the small etched or printed label on the upper edge of the sash, inside the track, or on the hinge side of the door panel. It will list the series code, the unit size in inches, and sometimes the glass package. That label matters because Cover used at least two distinct hardware profiles: older units with a narrow single track, and later ones with a wider double-chamber extrusion. Parts between them do not interchange cleanly, and forcing one costs more in callbacks than getting it right the first time.
For most Cover units, we install OEM-sourced parts when we can get them and quality aftermarket equivalents when the OEM line has been discontinued. That second case is common in Los Angeles, because salt air near the coast, hard water from city supply, and the kind of sun exposure you get in Encino or Northridge all wear hardware at different rates than the manufacturer’s test cycle. We give you the choice and the price difference in writing before any work starts.
Signs Your Cover Windows & Doors Is Failing

- Sash drag or scrape when you open it. The bottom rollers or hinge bushings have worn down, or the track has collected enough grit to deform. In Los Angeles, wind-blown dust from the hills works into tracks and acts like sandpaper.
- Condensation between the glass panes. The seal on the insulated glass unit has failed. Once that happens in a Cover window, the argon or krypton fill escapes and the unit loses its thermal performance. There is no field repair for that, only a glazing replacement.
- Lock or latch that fights back. The strike plate has shifted, the keeper is bent, or the frame has moved just enough that the two no longer line up. This shows up often after the wet winters we get in Los Angeles when the soil under a slab does its thing.
- Drafts you can feel with the unit closed. Weatherstripping has flattened, the sweep on the door has torn, or the frame itself has lost its seal against the rough opening. In LA this shows up as a warm spot in summer far more often than a cold one in winter.
- Visible rust or corrosion on hardware. Coastal air within five miles of the Pacific, plus the occasional Santa Ana blow, accelerates what you would not see for a decade in Denver. We replace more corroded Cover hinges and handles in Playa del Rey and San Pedro than anywhere else in the county.
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AfterReplacement Cost & What’s Included
For Cover windows and doors in Los Angeles, an installed replacement spans roughly $5,310 to $17,700. A single standard-sized window with a direct-fit replacement typically sits at the lower end of that range, while a large sliding door unit, a custom-glazed window, or a frame that needs structural repair sits at the upper end. What moves the number is not labor rate, mostly, but the condition of the rough opening once we get the old unit out. Rotted wood, a shifted frame, or termite damage behind the flange all add scope, and scope is where the real cost lives.
Every quote from Rowan Construction Group is a flat written price with a written scope before we start. That means the replacement part, the labor to install it, the hardware, the sealing, and the disposal are all in the number you approve. If we open the wall and find something the quote did not cover, work stops until you sign a change order. That has been our rule since 2007, and it is Clause 1 of our Haven Standard. We also include a documented photo record of every visit, so you leave with evidence of what was found and what we did.
DIY or Call Us?

Some things you can check yourself: whether the track is obstructed, whether the weep holes at the bottom of the frame are clogged, whether visible screws on the handle or strike plate have backed out. Those take a screwdriver and five honest minutes, and we are happy to tell you over the phone what to look for. What you should not do yourself is pull a Cover unit out of its frame, especially a large door or any window on an upper floor. The frame is part of the wall assembly, and the difference between a clean removal and a broken seal or cracked stucco is experience you earn over a few hundred jobs.
If the unit is dragging, fogged, or no longer locks, call us at (470) 298-9650. We will give you a written price before anyone picks up a tool, and if you have another contractor’s written estimate, we will review it line by line for free.
FAQs
Frames and hardware on Cover units typically last 15 to 25 years in Los Angeles, but coastal salt air and hard water can shorten hardware life to 10 years or less within a few miles of the ocean. Fogged insulated glass can happen at any age once a seal fails. Call (470) 298-9650 if you’re seeing condensation between panes, and we’ll tell you whether it’s a seal replacement or a full unit swap.
Yes, in many cases. Worn rollers, bent strike plates, torn weatherstripping, and corroded handles on Cover units are repairable, and we do those repairs every week. Fogged glass, a cracked frame, or a warped door panel usually means replacement. Call (470) 298-9650 and describe what you’re seeing. We’ll ask a few questions and then send you a written price, not a vague quote.
A standard Cover window replacement is a single-day job. A sliding door or a unit that needs frame repair around the rough opening can run two days, and we’ll tell you which before we start, including the exact scope in writing. If structural work is required behind the frame, that gets its own line item and its own pricing.
We keep the most common Cover replacement parts on our trucks: rollers, balances, weatherstripping, handles, and strike plates. Odd sizes and full insulated glass units are typically ordered and arrive within a week in Los Angeles, and we’ll tell you the lead time before you commit. Call (470) 298-9650 to schedule a free estimate, and we’ll check what is in stock for your model.
Written by Grant Rowan, Owner, Rowan Construction Group at Rowan Construction Group, serving Los Angeles and nearby areas.







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