Remodeling · Fort Collins and nearby
Window and door replacement in Fort Collins. Sealed tight for Colorado winters.
Energy-efficient replacement windows, new entry doors and patio doors, installed and flashed so they stay tight for decades.
Windows and Doors
What it involves. And when it's the right call.
Old windows let heat out in January and sun in all summer. Original aluminum and early vinyl windows in many Fort Collins homes are drafty, fogged between the panes or hard to open.
We replace windows and exterior doors on their own or as part of a bigger remodel. A window is only as good as its install, so we pay attention to flashing, insulation around the frame, and interior and exterior trim.
New windows or doors make sense when
- You feel drafts near windows in winter
- Glass is fogged between the panes
- Windows are hard to open, lock or keep open
- Rooms on the west side overheat in the afternoon
- The front door or patio door sticks, leaks or looks worn

Step by step
How we replace windows and doors. Measured twice, flashed once.
Every step is written into your scope before work starts, and you get a short update with photos each week while it happens.
- 1
Measure every opening
Each window and door is measured and listed in a schedule so the right size is ordered.
- 2
Choose the product
Frame material, glass, color and hardware are chosen and written into the scope.
- 3
Order
Windows are made to size, so ordering happens right after the scope is signed.
- 4
Remove and prep
Old units come out one at a time and the opening is checked for rot.
- 5
Set, flash and insulate
New units are set level, flashed against water and insulated around the frame.
- 6
Trim and clean up
Interior and exterior trim is finished and caulked, and we walk every opening with you.
Options
Window and door options. Matched to the house and the sun.
Vinyl windows
Good efficiency and value, low maintenance.
Fiberglass windows
Strong, stable in temperature swings, paintable.
Wood and clad windows
Classic look for older and historic homes.
Low-E glass
Coatings that cut heat gain and UV fading on sunny walls.
Entry doors
Fiberglass or steel, with new frames and weatherstripping.
Patio doors
Sliding or hinged, often replacing a drafty old slider.
Pricing
What drives the cost of windows and doors
The count and size of openings set most of the price. You get a written window schedule and quote.
- Number and size of openings
- Frame material
- Full-frame versus insert replacement
- Rot repair found at removal
- Interior and exterior trim work
- Special shapes or grille patterns
Local conditions
Windows for the Fort Collins climate
At nearly 5,000 feet, the sun is strong and winter nights are cold. Low-E glass on west- and south-facing walls keeps rooms more comfortable and protects floors and furniture from fading.
Utility customers in Fort Collins and Loveland may qualify for rebates through the Efficiency Works program on qualifying upgrades. Check the current program rules before you order; we can provide product details for the application.
Homes in historic districts may need review before changing windows on the street side. We check that before ordering.
How a remodel runs
Four steps, all in writing
You see the plan, the price and the schedule before work starts, then a short update every week until the final walkthrough.
- 1
Walkthrough
We visit, measure, and listen to how you use the space now.
First visit - 2
Scope and options
A written scope with allowances and finish choices, plus the price.
Signed plan - 3
Build and updates
Permits pulled, trades scheduled, and photos and notes every week.
Weekly update - 4
Final review
A room-by-room punch list walk before the last payment.
Sign-off
Service areas
Windows and doors near you. Fort Collins and nearby towns.
Fort Collins neighborhoods
FAQ
Windows and Doors: your questions
Do I need a permit to replace windows?
Many cities in the area require a permit for window replacement, especially if the opening size changes. The contractor confirms with your city or county and pulls it if needed.
Insert or full-frame replacement?
Insert windows fit inside the old frame and cost less. Full-frame replacement removes everything down to the studs and is better when the old frame is rotted or leaking.
Can you match my historic windows?
Wood and clad windows can match older profiles closely. If your home is in a historic district, the street-facing windows may need review first.
New windows often go with a bigger remodel. If siding or interior work is planned, doing them together saves trim work twice.
Other services
More ways to remodel
Whole-Home Remodeling
Open up an older floor plan, update every finish, or rework how the house flows, with one written scope that puts the trades in the right order.
Whole-home remodel →Kitchen Remodeling
New layouts, cabinets, counters, lighting and appliance setups, planned with you and priced in writing before anything comes out.
Kitchen remodel →Bathroom Remodeling
Tub-to-shower conversions, tiled walk-in showers, new vanities and better ventilation, with waterproofing that keeps water where it belongs.
Bathroom remodel →Basement Finishing
Turn bare concrete into a family room, bedroom, bath or office, framed for Colorado soils with egress windows where the code calls for them.
Basement finish →Home Additions
Bump-outs, primary suites, family rooms and second-story additions that look like they were always part of the house.
Home addition →Interior Renovation
Drywall, ceilings, trim, interior doors, flooring and paint that bring tired rooms up to date without moving walls.
Interior renovation →Siding and Exterior Remodeling
New siding, trim, soffit, fascia and exterior paint that change how the house looks from the street and stand up to sun, wind and snow.
Siding and exterior →Accessible and Aging-in-Place Remodeling
Curbless showers, grab bars, wider doorways, main-floor living and safer entries for people who want to stay in their home for the long run.
Accessible remodel →Who does the work
Projects are completed by A&G Construction
Home Remodeling Fort Collins is a local remodeling referral site. When you call or send a form, a remodeling planner from A&G Construction, a Northern Colorado general contractor, sets up your walkthrough and runs the project from plan to final review. More about who does the work.
Ready to plan the remodel?
Walkthrough, written scope, then the build. Call or text (970) 555-0100.