Yonkers Window Replacement: Windows, Patio Doors and Storefront Glass
Residential and commercial glazing across Yonkers and lower Westchester. Measured quotes at no charge, written floor by floor.
- ✓Specified floor by floor
- ✓EPA lead-safe certified crews
- ✓Se Habla Espanol
- ✓NFRC labels left on
Yonkers Window Replacement is a glazing company working in Yonkers, New York and the ring of Westchester villages around it. Sash and casement units, patio and French doors, entrances, shopfront glass. Vinyl, fiberglass, clad-wood or thermally broken aluminum, chosen per elevation rather than per catalogue. Inserts where the jamb is sound, full-frame where the sill has gone, and glass alone where that is honestly all it needs.
Most of this city is stacked upward. Six-story pre-war walk-ups, three-family frame houses on hillside lots, and blocks that climb two hundred feet from the river inside a few streets. Tall buildings on steep ground drive air up their own stairwells and shafts through the winter, and that pressure decides which windows fail and in which direction. It is the single most useful thing to know before ordering anything.
So we quote a tall building floor by floor rather than by the unit count. Lower floors pull cold air inward and feel drafty; upper floors push warm damp air outward and grow condensation. The two want different air-leakage ratings. Every replacement here also answers to the 2025 state energy code, in force since the last day of that year, which tightened this climate zone's window U-factor to 0.27.
Why Yonkers Chooses Yonkers Window Replacement
- ✓We price a tall building by elevation and floor, not by a unit count. The sixth floor and the first floor of the same walk-up get different air-leakage ratings because they fail in opposite directions.
- ✓We read the sash before we quote a replacement. Where the frame and jamb are sound, re-glazing an existing sash is exempt from the energy code's replacement rules and costs a fraction of a new unit.
- ✓Nobody here needs impact-rated glazing. Yonkers sits outside any wind-borne debris region. Saying that out loud costs us work every year, and we say it anyway.
- ✓Hillside lots get surveyed for grade before we talk about basement openings. Which wall a cellar window goes in matters far more here than the numbers that go on the order form.
- ✓We hand over the NFRC label off each unit and the area-weighted average behind the permit, so the performance you paid for is checkable rather than asserted.
- ✓Spanish is a working language on our crews, which matters in a city where roughly a third of households speak it at home and the person letting us into the apartment is often not the person who signed.
About Yonkers Window Replacement in Yonkers, NY
We replace windows and doors in one city and its immediate ring, which is the only reason we can specify by floor rather than by catalogue. Yonkers runs from riverfront mill housing through hillside three-families to the estate blocks above the parkway, and those are three different buildings wanting three different answers.
The thing that shapes the work is height on a slope. A six-story walk-up on a hill has a taller connected air column than its floor count suggests, and in January that column pushes and pulls hard enough to decide which sash whistles and which one sweats. We measure for it, quote for it, and tell you which floors genuinely need the better unit.
Do not hire us if your windows are sound and only the glass has fogged, or if the sash is original joinery worth keeping and a storm panel would do. Both are cheaper than anything we sell and neither needs us for long. We would rather re-glaze eleven sashes and be called back in ten years than sell a building a full replacement it did not need.
Our Window Services in Yonkers, NY
Energy-Efficient Windows
The number changed on the last day of 2025. New York's 2025 energy code took effect with no grace period, and for climate zone 4A, which covers all of Westchester, replacement windows now have to reach a 0.27 U-factor and a 0.40 solar heat gain coefficient.
Vinyl Replacement Windows
Vinyl is the right answer for most of the housing in this city, and we will say so before you ask. On a two- or three-family frame house the arithmetic is not close: it costs a fraction of clad-wood and hits the code numbers easily.
Fiberglass Windows
Fiberglass answers one problem better than anything else on the market here, and the problem is daylight. Replacing into an existing masonry opening with an insert means the new frame sits inside the old one, and every extra millimeter of frame section is glass you lose permanently.
Wood & Clad-Wood Windows
Clad-wood exists for one situation, common in the north and west of this city: the interior casing is original and worth keeping, and a white plastic frame beside it would look like exactly what it is. The outside gets a metal or composite skin.
Aluminum Window Frames
We will talk most homeowners out of aluminum, and it is worth explaining why rather than refusing. Aluminum moves heat about a thousand times faster than vinyl does.
Double-Hung Windows
Double-hung is the default here, and for good reason. Almost every pre-war building in this city was glazed with it, the proportions assume it, and on a street of matched facades a casement among the double-hungs is a mistake you cannot undo cheaply.
Casement & Awning Windows
A casement seals by compression. The sash swings outward and the handle draws it hard against a continuous gasket around the whole perimeter, which is a better joint than any sliding sash manages.
Sliding Windows
Horizontal sliders belong to a specific era of this city rather than to the pre-war core. The garden apartment blocks and postwar developments built out along the eastern side of Yonkers used them extensively, and in those buildings replacing like for like is usually the right call.
Bay & Bow Windows
A bay projects out of the wall, so it stops being a window and becomes a small room with five surfaces exposed to weather. On a hillside elevation where the ground drops away beneath it, that changes the job from glazing into a piece of building.
Picture & Architectural Windows
A fixed window has no seal to slide, no hardware to wear and no joint that has to open. It is the tightest thing you can put in a wall, and the only type whose air-leakage figure is mostly a property of the installation.
Egress & Basement Windows
Everyone who writes about egress writes about the numbers, so let us skip them. Clear opening area, minimum width and height, sill height above the floor: they are printed in the residential code, and any installer who cannot recite them should not be near your building.
Impact & Security Glazing
Most of what this page could sell you, we would rather argue against, so let us lead with that. If a salesperson has quoted you a hurricane-rated window package for a house in Yonkers, they have sold you a test your building will never sit.
Patio & Sliding Glass Doors
The energy code tells you something useful about patio doors if you read two lines together. Sliding doors are held to the same 0.3 cubic feet per minute air-leakage limit as windows.
French Doors
Go back to that pair of numbers in the energy code. A swinging door is allowed 0.5 cubic feet per minute of air leakage per square foot; a sliding one is held to 0.3.
Entry Doors
The front door of a tall building has a problem no house door has, and it is the reason so many of them slam, whistle and refuse to latch. It is standing at the bottom of the building, which in winter is the point of maximum inward pressure.
Window Screens & Rescreening
This is the cheapest page on the site and it saves owners here more money than most of the others, so it is worth reading before you order anything larger. Almost nothing in the pre-war stock of this city takes a stock screen.
Glass Repair & Insulated Glass Units
If the sash and frame are square and sound and only the sealed glass has failed, you almost certainly do not need new windows. The energy code is explicit: glass-only replacement in an existing sash and frame is exempt from the replacement fenestration requirements.
Commercial Storefront Glass
Commercial glazing follows a different code path and the numbers are not the ones on the residential page. Commercial buildings answer to the commercial provisions of the state energy code, which set their own fenestration limits and add a window-to-wall area calculation.
Storefronts, walk-ups and managed buildings
Commercial glazing in this city is mostly two jobs. There is the ground-floor shopfront along the old trolley corridors, where a tenant fit-out or a broken lite needs thermally broken aluminum section, tempered or laminated glass and a door that actually latches.
Then there is the managed residential building, where a board or an agent replaces two hundred openings over several seasons and needs the phasing, the labels and the paperwork to hold together across the whole program.
Both answer to the commercial path of the state energy code rather than the residential one, and the two paths do not use the same numbers.
- ✓Thermally broken aluminum storefront and curtain-wall infill, with tempered or laminated lites to suit the opening
- ✓Shopfront door hardware sized for a building that pulls hard on its own entrance, including closers, thresholds and vestibule work
- ✓Phased apartment programs run one riser at a time so occupied units are closed back up the same day
- ✓Board and managing-agent packages with unit schedules, NFRC labels and the area-weighted average shown line by line
- ✓Retail frontage secured the day it goes, with the replacement lite measured and ordered while the boarding is still going up
- ✓Insulated glass unit replacement in existing commercial frames where the frame itself is sound
- ✓Fire-rated and wired-glass replacement in stair and corridor openings where the original assembly is failing
- ✓Lead-safe working practice in pre-1978 buildings, with containment at the opening rather than in the public stair
- ✓Section-matched infill for landmark-adjacent frontage where the existing sightline has to be kept
Recent Projects Across the lower Hudson Valley
How It Works
- Measure the opening and read the building. We measure every opening and note which floor it is on, which elevation it faces and how the ground falls away outside it. On anything above three stories that record is what tells us where the pressure changes over, and it is the difference between a specification that works and a matched set of units that half work.
- Decide insert, full-frame or glass only. Three different jobs at three different prices. A sound jamb takes an insert. A rotted sill or a racked frame needs full-frame work back to the rough opening. A failed sealed unit in a good sash needs glass only, which the energy code exempts outright, and we will tell you when that is the honest answer.
- Quote it with the labels attached. You get unit-by-unit pricing with the U-factor, solar heat gain coefficient and air-leakage rating written against each line. Where a permit needs the area-weighted average across the whole order, we show the arithmetic rather than asking you to take the total on trust.
- Fit, seal and prove it. Sill pan first, unit set and shimmed square, perimeter foamed at low expansion, then backer rod and sealant outside. We leave the NFRC labels on until you have seen them, clear the old sash off site the same day, and walk every opening with you before the last one is signed off.
What Yonkers Customers Say
They quoted our six-family by floor and told us the second and third floors could wait a year. Every other outfit wanted to do all twenty-four at once. The top floor stopped sweating the first winter after, which is the thing we actually called about.
We had four fogged units and expected to be sold a whole house. Instead they measured the sashes, found three were square, and re-glazed those and replaced only the one with the rotted sill. The bill was under a quarter of what we had budgeted for.
Our rear elevation sits over a drop and the old slider had leaked for years. They pitched a proper sill pan with an end dam and explained why the door on that wall was always going to be the hardest one. Two winters on and the sill is dry.
Straightforward about the cellar egress. They walked the grade first, put the opening in the downhill wall, and we avoided a window well and the drainage that would have come with it. The inspector signed it off without a second visit.
Service Areas
Yonkers Window Replacement serves Yonkers, NY and surrounding communities including:
Frequently Asked Questions
Do I need a permit to replace windows in Yonkers?
Assume yes and let the building department tell you otherwise. Like-for-like replacement into an unchanged opening is treated more lightly than work that alters the rough opening, but the moment you widen an opening, cut a new one for a cellar bedroom, or touch anything structural over the head, you are in permit territory.
Enlarging an opening in a load-bearing masonry wall also puts a lintel in play, and that is not a conversation to have after the brick is out.
What U-factor do replacement windows have to meet here?
Westchester County sits in climate zone 4A. New York's current energy code, the 2025 ECCCNYS, was adopted in July 2025 and came into force on 31 December that year with no grace period behind it. For that zone the replacement fenestration limits are a 0.27 U-factor and a 0.40 solar heat gain coefficient.
If one or two openings will not hit it, the code lets you meet the number as an area-weighted average across all the units you are replacing, which is how most whole-house orders actually comply.
Why are my top-floor windows wet when the ones downstairs are fine?
Because they are failing at opposite ends of the same problem. In winter a tall building behaves like a chimney: warm air rises up the stairwell and shafts, so the upper floors sit under positive pressure and push moist indoor air out through every gap, while the lower floors sit under negative pressure and pull cold air in. Condensation collects where that warm damp air meets cold glass, which is why it shows up high and drafts show up low.
Should I buy impact-rated or hurricane windows in Yonkers?
No. Wind-borne debris regions are mapped along exposed coastlines, and inland Westchester on the Hudson is not one of them, so nothing in the code here requires missile-rated glazing and you would be paying for a test your building will never sit. Laminated glass still earns its place on ground-floor and areaway sashes, where it buys real delay against forced entry. That is a security decision, and it is worth making on the bottom floor only.
Can I replace just the glass instead of the whole window?
Often, and it is the cheapest honest fix. If the sash and frame are square and sound and only the sealed unit has fogged, the existing code exempts glass-only replacement in an existing sash and frame from the replacement fenestration rules altogether.
You keep the original sightlines, which matters on a pre-war elevation, and you spend a fraction of the price. We will measure the sash for square before recommending it, because a racked frame will fail a new unit as fast as it failed the old one.
How do you work in an occupied apartment building?
One stack of openings at a time, with the building told which line is coming and when. Pre-war stock here is almost all pre-1978, so crews work to EPA lead-safe practice: poly on the floor, the opening contained, the debris bagged at the window rather than carried down a public stair. Occupied units are closed back up the same day. Nothing is left open overnight, and no apartment loses its only means of ventilation while we are in it.