Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
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AfterFast, Reliable Patio Door Installation Across Kentfield
Patio door installation in Kentfield typically runs $2,800 – $6,400 for a standard 6-foot sliding door, fully installed, and most jobs take one to two days once the door is on site. We serve the whole Kentfield area, from the flats near the College of Marin up through the hillside streets off Sir Francis Drake Boulevard. If you’re dealing with a fogged glass panel or a slider that sticks every time you open it, call (817) 686-2228 for a written quote before any work begins. The price goes on paper before a single screw turns, and it does not move at the door.
Why Meridian Windows & Doors Is Kentfield’s Preferred Patio Door Installation Company
Kentfield homeowners call us because we show up when we say we will and put every commitment in writing. Our crews know the housing stock here: 1940s and 1950s ranchers along the flat streets, mid-century builds in the hills, and a growing number of remodels that have changed original door openings more than once. That means we have seen most of what is behind a Kentfield door frame before we open it, and we plan for it.
Meridian Windows & Doors is part of the Garrison Partners family, operating to The Garrison Standard since 2009. Held to that standard, every project receives a written price before work begins and is covered by a written 365-Day Done Right Promise. If the work fails within that period, the crew returns at no charge. That is the guarantee, in plain words, on every patio door we install in Kentfield.
Homeowners know who is walking through the door. Every technician is background-checked and uniformed. And when you call, a live person answers, around the clock, every day of the year. No voicemail loops. No next-business-day callbacks.
Sliding Door Replacement in Kentfield
Sliding Door Replacement in Kentfield is what we do most often, because so many homes here still have their original aluminum-frame sliders from the 1950s through the 1970s. Those doors fog, bind on their tracks, and leak air in winter. By the time a Kentfield homeowner calls us, the rollers are usually worn flat and the frame has shifted enough that the lock no longer lines up. Replacement is the right call when the frame is bent, the glass seal has failed, or the track is too worn to repair.
A typical sliding door replacement in Kentfield runs $2,800 – $5,500 for a standard opening, installed. That includes demolition and haul-away of the old door, new frame and sill, hardware, and interior and exterior trim. If the old door is a custom size or the opening needs to be re-framed, the number moves up from there, and we write that down before any work starts.
What gets replaced
We remove the old door, frame, and sill, then inspect the rough opening for dry rot in the jamb and header. That inspection matters in Kentfield, where winter moisture works into older wood frames slowly over decades. We rebuild what is rotted, flash the opening so water drains away from the house, and set the new door level and square.
Glass and hardware choices
Every replacement door gets tempered safety glass as standard. In Kentfield’s high fire-severity zone, we often specify low-E glass with a heat-reflective coating to meet WUI energy requirements. Hardware choices include a standard mortise lock, keyed lock, or multi-point locking for wider openings.
Patio Door Installation requests in Kentfield range from simple slider swaps to full re-frames. The difference is what is behind the wall, and we tell you before we open it.
Sliding Door Installation in Kentfield
Sliding Door Installation in Kentfield applies when there is no existing door opening, or when the current door is in the wrong place altogether. Homeowners adding a deck off the kitchen, opening a dining room to a new patio, or converting a window wall into a pass-through all need new construction work, not a replacement. We cut the opening, build the header, frame it to carry the load, and set the door so it operates cleanly for years.
New sliding door installation in Kentfield typically lands between $4,200 and $6,400 for a standard 6-foot opening cut into a single-story exterior wall. The range accounts for the structural header, framing, sheathing, waterproof flashing, interior drywall repair, and exterior stucco or siding patching. We coordinate with a structural engineer when the opening is wide or the wall is load-bearing, and we pull the permit ourselves.
New openings in Kentfield homes
The biggest variable is what is inside the wall. In Kentfield, plumbing and electrical runs often cross exterior walls at odd heights in older homes, and moving them adds cost. We scope that in the estimate, in writing, before the saw comes out.
Multi-slide and wide openings
For openings eight feet and wider, we install multi-slide door systems from the manufacturer lines we carry. Those jobs are priced per panel and per foot of track, and we walk you through the math line by line. The right door for a Kentfield home is the one that fits the opening and the budget, not the one that happens to be in stock.
Trusted Brands We Service in Kentfield
We are authorized to install and replace products from eight manufacturer lines, including PGT, CGI, CWS, ES Windows, ECO Window Systems, Mr-Glass, Therma-Tru, and ViewLux. Of those, PGT, CGI, and CWS are the three we most often specify for Kentfield homes. PGT’s Thermaguard line carries laminated glass options that meet Marin County’s WUI fire-severity requirements. CGI makes heavy-duty commercial-grade doors we put in when the exposure or the wind load calls for it. CWS builds a solid mid-range vinyl and aluminum hybrid that fits a lot of Kentfield’s builder-grade openings without overspending. We stock common parts and track components locally for these lines, which means faster turnaround when a repair or adjustment comes up in Kentfield.
On Sir Francis Drake Boulevard near the College of Marin, our crew replaced a fogged 8-foot slider on a 1950s rancher with a PGT Thermaguard sliding door, using a laminated glass interlayer and low-E glass to meet WUI requirements while improving energy performance. That job is a good example of what we mean when we say the right product gets spec’d for the job.
Common Patio Door Installation Problems We See in Kentfield Homes
- Fogged or failed glass seals. The marine air and temperature swings in Kentfield work on old aluminum frames until the seal fails and moisture gets between the panes. Replacement glass or a full door replacement is the only real fix once the fog shows up.
- Hidden dry rot in the jamb and sill. Older Kentfield homes, especially those built before the 1970s, often have wood-door frames that have absorbed decades of winter moisture. We find rot behind the trim on roughly a third of the replacement jobs we open up here, and we rebuild it before it spreads.
- Non-compliant glazing at inspection. Kentfield sits in a high fire-severity zone with WUI building standards, and a patio door without tempered glazing will fail final inspection. We have seen homeowners buy a door themselves, only to have it red-tagged because the glass package did not meet the code requirement for the zone.
- Worn rollers and bent tracks. The heavy coastal fog and soil movement in Marin affect how door thresholds settle over time. A door that worked fine for twenty years starts binding as the track shifts, and forcing it open only bends the hardware further.
Pricing for Patio Door Installation in Kentfield, CA
In Kentfield, a standard sliding patio door replacement usually runs between $2,800 and $5,500 installed. A new opening cut into an existing wall runs $4,200 to $6,400. Multi-slide or wide-opening systems start around $7,000 and go up based on panel count, track length, and structural work. What moves the number: the condition of the rough opening, whether WUI-compliant glazing is required, the door brand and glass package, and whether the opening is load-bearing. We deliver a written line-item price before any work starts, with no change orders unless the wall reveals something hidden. If that happens, we stop and put the new number in writing before we continue. Call (817) 686-2228 to schedule a free estimate for patio door installation in Kentfield.
We Also Serve Cities Near Kentfield
Our crews serve Kentfield and handle patio door installation throughout central Marin. That includes Larkspur, San Anselmo, San Rafael, and Corte Madera. If you are a few miles outside Kentfield, call (817) 686-2228 and we will tell you if your home is in our local service area.
Serving Kentfield, CA - Our Local Coverage Area
We’re based in the Kentfield 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 About Patio Door Installation in Kentfield
Yes. Kentfield sits within Marin County, and a permit is required when a patio door replacement changes the size of the opening, alters structural framing, or involves new glazing in a fire-severity zone. A like-for-like slider swap in the same rough opening usually does not need one, but we pull permits on every job that requires them, and we coordinate the inspection schedule so the work is not held up. Call (817) 686-2228 and we will tell you whether your specific project needs a permit.
Tempered safety glass is required on every patio door in Kentfield, and because the area sits in a high fire-severity zone with WUI building standards, you may also need low-E glass or a laminated glass interlayer to meet energy and ignition-resistance requirements. PGT’s Thermaguard line is one we frequently specify because it carries both the tempering and the WUI-compliant glass package in one product. We verify the glazing spec against your home’s fire-zone designation before we order anything.
Most replacements take one day for demolition, installation, and trim. New openings take two days on average: day one is cutting, framing, and setting the door; day two is interior drywall repair, exterior patching, and hardware adjustment. Wide multi-slide systems can run three to four days depending on the track and structural work. We give you a calendar date for start and finish, in writing, before the job begins, and we hold to it.
We install and replace patio doors from eight manufacturer lines, including PGT, CGI, CWS, and ES Windows. In Kentfield, we most often specify PGT for WUI-compliant glazing, CGI for heavy-duty and coastal wind-load applications, and CWS for mid-range replacements where the budget matters more than the brand name. We stock common parts for these lines locally so adjustments and repairs turn around faster. Call (817) 686-2228 and we will help you match a door brand to your opening and your budget.
Yes. You can replace a sliding door with French doors, a multi-slide system, or a single outswing door, provided the opening is re-framed correctly and the new door meets the same WUI glazing requirements. The most common change we make in Kentfield is converting an old 6-foot slider to a wider 8-foot multi-slide when homeowners want better access to a deck or yard. We scope the structural change, pull the permit, and write the full price down before work begins.
For patio door installation in Kentfield with a written price and a one-year written guarantee, call (817) 686-2228. We answer live, around the clock, and the estimate is free. A meridian is a fixed line you measure everything against. That is what the name means, and how we run every install.
Written by Elliot Vance, Owner at Meridian Windows & Doors, serving Kentfield and central Marin under The Garrison Standard since 2009.