Sliding Glass & Patio Door Replacement in Daly City
Back-yard and deck doors from Southern Hills to Fairmont, replaced with the track and threshold work most companies skip.
When a Patio Door Stops Gliding
A sliding door that fights you is rarely a glass problem. The rollers underneath have flattened, the track has burred or corroded, the threshold has settled, or the whole frame has racked slightly out of square and the panel is now binding on one corner. Salt air along this part of the Peninsula accelerates all of it, and homes with doors facing west onto a deck or yard see it first. Daly City Window Replacement replaces two-panel, three-panel and multi-slide patio systems, and we treat the track, rollers, sill and threshold as the core of the job rather than an afterthought. When the existing frame is genuinely sound and only the hardware has failed, we will say so and quote the smaller repair instead.
What Patio Door Replacement Covers
Every item below is part of standard scope and appears on your written quote.
Diagnosis of binding and dragging
We identify whether the cause is rollers, track wear, frame racking or a settled sill before recommending a replacement.
Full system removal
The panels, frame, track and threshold are removed together so the sub-sill beneath can be inspected and corrected.
Sub-sill inspection and repair
Water sitting in a failed door track eventually reaches the framing underneath, and any soft or rotted material is replaced before the new unit is set.
Sloped sill pan and drainage
A pan with end dams under the new threshold routes water outward, which is critical on a door sitting at deck or patio level.
New track and adjustable roller assemblies
Stainless or corrosion-resistant tandem rollers with adjustment screws let the panel be set plumb and re-tuned years later without removing it.
Threshold and weep detailing
The threshold is set level and its weeps kept clear so wind-driven rain drains out rather than pooling inside the track.
Panel configuration options
Two-panel, three-panel and multi-slide layouts are available, along with a choice of which panel operates, which changes how the room and the patio connect.
Tempered safety glazing
Patio door glass is tempered as required by code, with low-E and argon specified for the elevation the door faces.
Security hardware
Multi-point or reinforced locking hardware and anti-lift detailing, because a patio slider is the most common forced-entry point on a house.
Interior and exterior finish, plus haul-away
Casing, trim, sealant and stucco patching are completed, and the old door and debris leave with the crew.
How the Project Runs
- 01
Door and sill measure
We measure the rough opening, check the sill and framing beneath the existing threshold, and operate the door to see where it binds. You are told whether this is a hardware repair, a panel replacement or a full system swap, and the itemized written price for whichever it is comes before we leave.
- 02
Ordering the system
Patio systems are built to your opening, typically over four to eight weeks, with multi-slide configurations at the longer end. Panel operation, glass package, hardware finish and screen type are all confirmed in writing before the order goes out.
- 03
Installation day
A standard two- or three-panel replacement usually takes most of a day. The opening is never left unsecured, the sill pan and flashing go in before the frame, and the finished door is adjusted with you present so you can feel that it moves with one hand.
Why Our Patio Door Work Lasts
The sill under the door gets the attention
Most premature patio door failures start below the threshold, in framing nobody looked at. We open it, inspect it and correct it as part of the job rather than setting a new door onto a compromised sill.
Adjustable, corrosion-resistant rollers as standard
Rollers you can re-tune are the difference between a door that still glides in year eight and one that needs a service call in year three. In salt air, the material they are made from matters as much as the design.
Security treated as part of the specification
A sliding door is the easiest opening on most houses to force. We specify reinforced locking hardware and anti-lift detailing without treating it as an optional extra.
- Licensed & insured
- Flat written pricing
- Tempered safety glazing to California code
- Adjustable corrosion-resistant roller systems
Make the Patio Door Move With One Hand Again
If the door drags, sticks at one corner, or lets a draft through even when locked, the track and sill are the place to start looking. Book a free measure and get an honest read on whether it needs hardware or a full replacement.
(650) 278-4593(650) 278-4593 — book your measure