Window Installation & Replacement in Lawrence Township, NJ
New and replacement windows for New Jersey and Pennsylvania homes
Power Construction Inc. installs and replaces windows across central New Jersey and Bucks County, Pennsylvania — double-hung, casement, sliders, picture windows, and bay and bow windows built out from the wall. We are a licensed and insured exterior contractor, which means the same crew that fits the window also owns the flashing, the trim and the siding around it.
Whether it is one draughty window over a porch roof or every opening in the house, the estimate is free and we will tell you honestly whether the frames can be reused or need to come out entirely.
Window replacement done with the wall, not just the window
Most window problems are not really window problems. Water gets in around the opening, the trim rots, the sill goes soft, and the draught everyone blames on the glass is actually coming through a gap behind the casing. Because we side and roof houses as well, we open the wall, look at what is behind the window, and put it back properly — house wrap lapped the right way, the head flashed so water runs out over the top of the trim rather than behind it, and the whole opening sealed before the trim goes on.
That is the part a window-only installer often leaves alone. We replace rotted sheathing and framing where we find it, wrap or replace the exterior trim, and finish the outside so the new window looks like it belongs on the house. If the siding is coming off anyway, this is by far the cheapest time to do the windows.
Full-frame and insert replacement
There are two ways to replace a window and they are not interchangeable. An insert, sometimes called a pocket replacement, drops a new window into the existing frame. It is quicker, it costs less, and it keeps the interior trim intact — but it only works where the old frame is sound and square, and you lose a little glass area to the second frame.
A full-frame replacement takes the old window out down to the rough opening. It is the right answer where the frame or sill has rotted, where the opening is out of square, where you want to change the size or style of the window, and on older homes where the original frames have moved. We will tell you which one your house actually needs after we have looked at the openings, not before.
Double-hung
The standard on most New Jersey and Pennsylvania homes. Both sashes move and tilt in so the outside of the glass can be cleaned from indoors.
Casement and awning
Hinged at the side or top and cranked open. They seal tightly against the frame, which makes them a good choice on a wind-exposed wall.
Sliders and picture windows
Sliders for wide openings with limited swing room; fixed picture windows where the view matters more than the ventilation.
Bay and bow windows
Built out from the wall, with a roof and a head that have to be framed, flashed and capped properly — that cap is what keeps a bay window dry.
Custom and non-standard sizes
Older homes and additions rarely have stock openings. We measure each one and order to it rather than making the opening fit the window.
Energy efficiency that matters in this climate
Central New Jersey asks a lot of a window. It has to keep heat in through a January cold snap and keep humidity and solar gain out through a humid July, and single-pane or tired aluminium-framed windows do neither. Modern double-glazed units with a low-emissivity coating and an argon fill cut the heat that moves through the glass, and a properly sealed installation cuts the air that moves around it. In most homes the draught you can feel is the bigger of the two problems.
There is a comfort argument as well as a bill argument. Rooms over a garage, above a porch roof or on the west-facing side of a house are usually the ones that never feel right, and those are the rooms where new windows are most obvious afterwards. We will look at U-factor and solar heat gain with you rather than just quoting a package, because the right glass for a shaded north wall is not the right glass for a west-facing bedroom.
Older homes, additions and HOA approvals
Lawrence Township, Princeton, Pennington and Hopewell have a lot of houses that are older than any stock window size. On those we match the sight lines and the proportions rather than dropping in the closest thing off the shelf, because a window that is an inch short in a hundred-year-old opening is something you will see every time you walk up the path. Where the trim is part of the character of the house, we keep it or reproduce it.
If your neighbourhood has an association with rules about what the front of the house may look like, tell us early. We have done jobs where the window style, the grille pattern and the colour all had to be approved before anything was ordered, and it is far easier to get that right at the quoting stage than after a delivery arrives.
Doing windows at the same time as siding or a roof
Windows, siding and roofing meet at the places where houses leak. When one contractor does all three, there is no argument later about whose flashing failed, and there is one crew, one set of ladders and one clean-up instead of three. Homeowners who bundle usually find the windows cost less as part of a siding job than they would on their own, because the wall is already open and the trim is being replaced regardless.
It also means the finished house looks like it was done at once. New windows behind old siding, or new siding worked around tired windows, is the thing people notice about a half-finished exterior. If you are weighing up doing it all in one go, we will price it both ways and let you decide.
Recent window projects
A look at recent window work by Power Construction across New Jersey and Pennsylvania. Every photo is one of our own jobs.
Windows: questions we hear most
How long does a window replacement take?
Most whole-house jobs are one to three days, depending on how many openings there are and whether they are insert or full-frame replacements. A single window is usually a few hours. We take out and fit one window at a time, so your house is never left open, and we clean up and haul the old units away the same day.
Do I need full-frame replacement or will inserts do?
It depends on the condition of the existing frames and sills. If they are sound, square and not rotted, inserts are quicker and cheaper. If there is any rot, the opening has moved, or you want to change the window size or style, it needs to be full-frame. We check the openings during the estimate and tell you which one your house needs.
Can you match the windows on an older home?
Yes. We measure every opening rather than assuming a stock size, and we match the sight lines, grille pattern and trim so the new windows suit the age of the house. On homes with original exterior trim worth keeping, we work around it or reproduce it rather than wrapping over it.
Will new windows actually lower my heating bill?
They help, and how much depends on what you have now. Going from single-pane or failed double-glazed units to modern low-E glass makes a real difference, and sealing the gaps around the opening often matters as much as the glass itself. What homeowners notice first is usually comfort: fewer draughts and rooms that hold their temperature.
Do you install entry and patio doors as well?
Yes. Front and side entry doors and sliding patio doors are the same work as a window — an opening that has to be framed, flashed and trimmed so it stays dry — and we often do them on the same visit as the windows. Ask when we come out to measure.
Windows available in these towns
Power Construction provides windows from our Lawrence Township office across central New Jersey and Bucks and Montgomery County, Pennsylvania. Pick your town for local details, or call (609) 393-3039 if you are nearby but not listed.
New Jersey
- Windows in Lawrenceville, NJ
- Windows in Princeton, NJ
- Windows in Hamilton, NJ
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- Windows in Pennington, NJ
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- Windows in East Windsor, NJ
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- Windows in Hopewell Township, NJ
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Ready to talk about your windows?
Tell us what you need and we’ll come out, take a look, and give you a free estimate.