Complete window replacement guide for Lockport homeowners. Best window brands, energy savings, what to expect, and how to choose a contractor in Will County.
Replacing windows in Lockport comes down to three decisions: which kind of installation, which frame material and which glass. The right answers depend on the house, so this guide starts with the homes found in Lockport.
Lockport homes at a glance
Lockport was laid out in the 1830s as the headquarters of the Illinois and Michigan Canal, and its downtown historic district still has limestone buildings from that era. Around it are older frame houses, postwar ranches and newer subdivisions on the east side.
Old Lockport houses rarely have two openings the same size, and few of them are square. Every window gets its own measurements, and we plan on trim work inside and out.
What to choose for your Lockport home
In the historic district and the older streets off State Street, choose a wood-interior window and a full-frame installation. Original openings have weight pockets and old flashing that should be dealt with, and the trim is part of the character of the house. Double-hungs with a simple grille pattern in the upper sash usually suit these homes best.
In the ranches and Cape Cods built after the war, a good vinyl or Fibrex window installed as an insert is usually the sensible choice. The frames are sound, the openings are standard and the money is better spent on Low-E glass than on a premium frame. Consider a casement over the kitchen sink, where a double-hung is awkward to reach.
In the newer subdivisions on the east side, you have a lot of windows, so the cost per opening matters. A mid-range Fibrex, fiberglass or quality vinyl line gives the best balance. Do the fogged and rotted units first, keep the product consistent and finish the rest in a second phase if needed.
A typical window job in Lockport
A Lockport job often involves 15 or 20 openings in a dozen different sizes, some in walls a foot thick. We measure each one separately and usually recommend full-frame replacement so the old pockets can be insulated. Homes in the historic district may need approval for exterior appearance, and we supply the drawings.
Insert or full-frame
An insert window fits inside the existing frame. It is faster and costs less, and the interior trim stays untouched. It only works if the old frame is square and free of rot. A full-frame replacement removes everything down to the rough opening, so the installer can fix hidden damage, insulate the gap properly and flash the opening. It costs more and gives you slightly more glass.
Frame materials
- Vinyl. Lowest cost, no painting, good insulation. Quality varies widely between lines.
- Fibrex and fiberglass. Stronger and more stable than vinyl, with narrower frames and darker color options.
- Wood-clad. Real wood inside, aluminum or fiberglass outside. The best-looking and the most expensive.
We install Andersen, Marvin, Pella and Kolbe. See Andersen vs Pella vs Marvin for how the lines compare.
Glass
Low-E glass with argon fill is the standard for this climate and is what we install by default. Triple-pane adds comfort and quiet and is worth pricing for north-facing rooms and homes near busy roads. Look at the U-factor on the label: lower is better for Illinois winters.
What installation day looks like
The crew covers floors, removes one window at a time, sets and insulates the new one, and trims it inside and out before moving on. Most houses take one to two days. Afterwards we open and lock every window with you and take the old ones away.
Permits in Lockport
Permit rules are set by the City of Lockport. We check what your project needs and pull the permit when one is required. Homes in a designated historic district may also need design review for exterior changes. See our Lockport page for this service, or the same guide for Joliet.
Common questions
Call (331) 250-3726 or request a free consultation in Lockport.