Pella Platinum Certified Contractor
Window replacement in Longmont, Colorado.
Longmont has some of the oldest houses in Boulder County and some of the newest. Victorian and early-1900s homes fill the historic Eastside and Westside, mid-century ranches line the streets near McIntosh Lake, and Prospect New Town and the northeast side keep adding newer homes. KV Windows is a veteran-owned, Pella Platinum Certified Contractor based in Westminster, replacing windows in Longmont homes of every era.
- Historic Eastside to Ute Creek
- Veteran-owned
- Pella Platinum Certified Contractor
BBB Accredited Business
Manufacturer-backed warranties
Brick downtown, every era since.
Longmont was laid out in 1871 by the Chicago-Colorado Colony and named for Longs Peak, on the horizon to the west. The original square mile around Main Street is still the heart of town. A fire in 1879 led downtown to be rebuilt in brick, and flour mills, a cannery and the Great Western Sugar factory, opened in 1903, built the town that grew up around it.
The neighborhoods on either side of downtown hold Longmont’s oldest homes. The East Side Historic District, listed on the National Register in 1986, and the West Side Historic District are full of late-1800s and early-1900s houses with tall double-hung windows, many of them original or replaced decades ago. If your home is individually designated or in a local historic district, check with the City of Longmont’s historic preservation staff before changing windows.
Farther out, the city grew in waves: 1960s to 1980s ranches and split-levels in Southmoor Park and Northwest Longmont near McIntosh Lake and Twin Peaks Golf Course, the New Urbanist Prospect neighborhood from the late 1990s on, and newer homes around Ute Creek, Union Reservoir and Clover Basin. The 2013 St. Vrain flood also left its mark on the neighborhoods near the creek.
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What we do in Longmont.
Whole-home and partial window replacement, glass-only repairs, entry and patio doors, hail and storm restoration, exterior painting, and commercial glass for Longmont businesses.
Residential window replacement
Replacement windows for historic homes, mid-century ranches and newer two-stories alike, installed by our own certified crew.
Replacement windowsWindow glass replacement
If only the glass has fogged or cracked and the frame is sound, a new insulated glass unit may be all you need.
Glass replacementEntry & patio doors
Front doors for Eastside porches and patio doors for newer backyards, matched to your new windows.
Entry doorsHail & storm damage
Documentation, estimates and restoration after hailstorms roll off the foothills and across the plains.
Storm damageExterior painting
Trim and siding paint coordinated with your window project, so the outside is finished once.
Exterior paintingCommercial windows & glass
Storefront and commercial window work for businesses on Main Street, Ken Pratt Boulevard and the Hover Street corridor.
Commercial servicesCommon Longmont window projects.
The right recommendation in Longmont depends a lot on the age of the house.
Tall double-hungs in older homes
Eastside and Westside homes often have tall, narrow double-hung windows. Keeping that style, and the grille pattern, keeps the house looking like itself.
Double-hung windowsMid-century sliders and steel
1960s to 1980s ranches and split-levels in Southmoor Park and Northwest Longmont often have aluminum sliders or early replacements that sweat and leak air in winter.
Condensation & frostFirst-generation windows in newer neighborhoods
Homes from the late 1990s and 2000s in Prospect, Ute Creek and elsewhere are reaching the age when builder windows fog and drift out of adjustment.
7 signs to replaceLower levels and egress
Finishing a basement in a split-level or newer home? An egress window may be part of the plan.
Egress windowsLongmont weather is hard on windows.
Longmont sits where the foothills meet the plains, so it sees spring and summer hail, strong winter winds and big temperature swings. After a storm, we document window and exterior damage, write a detailed estimate and coordinate with your insurance adjuster when a claim is part of the project.
We’ll tell you straight what needs replacing and what doesn’t.
Insurance claim assistance
We can assist with:
- Storm damage documentation
- Detailed repair estimates
- Property inspections
- Coordination with insurance adjusters
- Communication throughout the restoration
Common signs of hail & window damage
After severe weather, watch for:
- Cracked or broken windows
- Broken window seals
- Moisture between panes
- Drafts around windows
- Water leaks
- Visible impact marks
- Chipped or peeling paint
- Loose exterior trim
If you see any of these, schedule an inspection before the next storm or a hard freeze makes it worse.
Neighborhoods & projects in Longmont.
We cover Longmont from the historic neighborhoods around Main Street to the newer homes on every edge of town.
A nearby crew, not a call center.
KV Windows is veteran-owned and based in Westminster, with 11 years, 1,000+ projects and a 4.7-star rating from 115 Google reviews.
North-metro based
Our shop is on W 73rd Ave in Westminster, up US-36 and the Diagonal, or I-25, to Longmont.
Veteran-owned
Disciplined scheduling, clear communication and accountability from estimate to walkthrough.
Pella Platinum Certified Contractor
Certified installers, and the products we install are backed by the manufacturer’s warranty.
Older-home experience
Every opening measured in person, with the style and grilles chosen to suit the house.
Hail & insurance support
Documentation and restoration help after Front Range storms.
Team Dave Logan member
Part of a contractor network known across Colorado for professional standards.
Our installation process.
From a free Longmont estimate to the final walkthrough, every step is clear.
- 1
Free in-home consultation
We visit your Longmont home, look at every opening and talk through how you use each room.
- 2
Detailed estimate
A clear written estimate with products, options and project cost. No pressure.
- 3
Approvals & scheduling
If your HOA or the city’s historic preservation review needs to approve the change, you get the product details first. Then we order and schedule.
- 4
Professional installation
Our certified in-house crew installs and seals each opening using proven techniques.
- 5
Final walkthrough
We check every window with you before we leave.
Nearby service areas.
Longmont is close to several cities we already serve.
Erie
Just southeast, across the Boulder–Weld county line.
Window replacement in ErieBoulder
Southwest along the Diagonal Highway.
Window replacement in BoulderLafayette
South down US-287.
Window replacement in LafayetteBroomfield
Farther south, on the way to our Westminster shop.
Window replacement in BroomfieldLongmont window replacement FAQ.
Answers to the questions we hear most from Longmont homeowners and businesses.
Do you replace windows in historic Eastside and Westside homes?
Yes. We measure every opening in person and recommend styles and grille patterns that suit the house. If your home is designated or in a local historic district, check with the City of Longmont’s historic preservation staff before changing windows. We’ll provide the product details they ask for.
Our 1970s split-level has aluminum sliders. What should we replace them with?
Often new sliders or casements in the same openings, with modern insulated glass. We’ll talk through how you use each room and what style fits the house.
My HOA has design rules. Can I change frame color or grilles?
Often yes, but many newer Longmont neighborhoods review exterior changes. Check your HOA’s guidelines first. We’ll give you the product, color and grille details the submission asks for.
Do you handle hail damage in Longmont?
Yes. We document damage, write a detailed estimate and coordinate with your insurance adjuster when a claim is involved.
How do I get a free estimate in Longmont?
Call 720.535.9629 or use the form on this page. A local KV Windows expert will call to schedule your in-home visit.
Ready for better windows in Longmont?
Get a free, no-obligation estimate from a veteran-owned, Pella Platinum Certified Contractor based in Westminster. Call 720.535.9629 or request your visit online.