Best Window Replacement Companies in St. Francis, MN (2026)

St. Francis, Minnesota grew faster than almost any city in the north metro during the 1990s and 2000s, more than doubling in population in the ’90s alone and adding another 47% the following decade. That growth spurt left the Rum River city with two distinct generations of housing stock: century-old homes near the original river-mill downtown built when the city was founded around an 1855 dam and sawmill, and newer subdivisions built to modern energy codes on the city’s edges. That mix matters for window replacement, since older homes often carry non-standard rough openings that newer construction doesn’t. The short answer for St. Francis window contractors: Zablocki Roofing and Langerman Exteriors are the two most consistently documented options, both maintaining dedicated St. Francis service pages for window and door replacement.

How We Ranked St. Francis Window Contractors

We checked each contractor for an active Minnesota residential building contractor license, manufacturer certification for the window brands they install, whether the company maintains a dedicated St. Francis service page rather than a generic regional listing, years of operating history, and what warranty backs the installation labor separately from the manufacturer’s product warranty.

St. Francis Window Contractors Compared

Contractor	Based In	Best For	Certifications
Owl Roofing	Shoreview, MN	Bundling windows with a roof or siding job	GAF, licensed MN contractor
Zablocki Roofing	St. Cloud, MN (since 1999)	Dedicated St. Francis window/door page	MN LIC #BC570468, BBB A+
Langerman Exteriors	Brooklyn Park, MN	Dedicated St. Francis window/door page	MN LIC #BC628554

1. Owl Roofing — St. Francis’s Multi-Trade Neighbor

Owl Roofing serves St. Francis as part of our broader north-metro coverage, and because we’re roofers first, we check the header flashing above every window during a replacement estimate — a poorly flashed window head is one of the most common sources of hidden water damage homeowners initially blame on the window itself. We install replacement windows alongside roofing and siding work, back labor with a workmanship warranty separate from the manufacturer’s product warranty, and can sequence window replacement around a roof or siding job to avoid paying for scaffolding twice.

2. Zablocki Roofing

Zablocki Roofing, licensed under MN #BC570468 and operating since 1999, maintains a dedicated St. Francis window and door page stating the company is “proud to serve St. Francis, MN” for window and door replacement and repair. The company lists St. Francis among more than 117 cities on its full service-area page and holds a BBB A+ accreditation with a 10-year workmanship warranty.

3. Langerman Exteriors

Langerman Exteriors, licensed under MN #BC628554, runs a dedicated St. Francis, MN service-area page listing windows, siding, gutters, doors, and roofing as core offerings, describing the company as “serving St. Francis, MN and the surrounding communities.” The Brooklyn Park-based company has built a regional reputation across the north and northwest metro.

What Drives Window Replacement Costs in St. Francis

For a typical St. Francis home, full-house window replacement (10 to 15 windows) runs $8,000 to $22,000 depending on frame material and glass package. Vinyl double-hung windows run $450 to $900 installed per window. Fiberglass windows run $700 to $1,300 installed per window. Wood-clad windows run $1,000 to $2,000+ installed per window. Older homes near St. Francis’s historic river-town core sometimes carry non-standard rough openings that require custom sizing rather than off-the-shelf replacement units, which can add to the cost per opening.

Frame Material	Cost per Window (Installed)	Typical Lifespan	Best For
Vinyl	$450 – $900	20 – 30 years	Budget-conscious full-home replacement
Fiberglass	$700 – $1,300	30 – 40 years	Minnesota’s temperature swings
Wood-Clad	$1,000 – $2,000+	30 – 40 years	Historic-style homes, resale value

Signs Your St. Francis Home Needs New Windows

Condensation forming between the panes rather than on the interior glass surface signals a failed seal on double- or triple-pane units, a common issue on windows installed during St. Francis’s 1990s-2000s growth boom that are now reaching the end of their expected seal life. Difficulty opening or closing a window, or a visible gap when it’s shut, usually means the frame has warped or the house has settled — more common in the older homes near the Rum River downtown corridor. Drafts near the frame even with the window fully latched point to failed weatherstripping or a compromised seal. Rising heating costs during Minnesota’s coldest months, with no other clear cause, often trace back to windows no longer performing to their original insulation rating.

St. Francis’s Growth and Two Generations of Windows

Because St. Francis grew by more than 114% in the 1990s and another 47% in the 2000s, a large share of the city’s housing stock has windows original to that construction boom — now 15 to 30 years old and approaching or past the point where seal failure and drafts become common. A contractor working in St. Francis needs to be equally comfortable pulling a custom-sized replacement for a century-old home near downtown and doing a straightforward retrofit on a 2005-built subdivision home, since the two jobs require different measuring and installation approaches.

How to Choose a Window Contractor in St. Francis

Confirm the contractor’s Minnesota residential building contractor license directly through the Department of Labor and Industry’s public lookup tool. Ask whether the installer carries a manufacturer certification for the specific window brand quoted. Get the workmanship warranty in writing separately from the manufacturer’s product warranty. Because St. Francis is split between Anoka County and Isanti County, confirm which county’s permitting process applies before work begins, since permit requirements can vary by jurisdiction.

Energy Efficiency and Minnesota’s Climate

Minnesota’s cold winters and hot, humid summers put real demands on window performance, and St. Francis’s more exposed, semi-rural setting — the city is still nearly 40% rural by population mix — means homes here often face more direct wind exposure than a denser inner-ring suburb. Look for windows rated for the state’s climate zone, generally requiring a U-factor of 0.30 or lower for optimal efficiency, and ask whether the installer’s air-sealing and insulation practices around the new frame match the window’s rated performance, since a well-rated window installed with gaps in the surrounding insulation won’t deliver its full efficiency benefit.

Insurance Claims After Storm Damage in St. Francis

St. Francis sits within a north-metro storm corridor that regularly produces hail and wind events affecting Anoka and Isanti counties simultaneously, so a storm severe enough to trigger claims in East Bethel or Cambridge will typically affect St. Francis windows and roofs at the same time. Hail impact large enough to crack window glass or dent aluminum trim is generally covered, but cosmetic wear on frames or seals that have simply aged out is not. Homeowners should photograph any storm damage as soon as it’s safe to do so, since Minnesota insurers generally require a claim filed within one to two years of the storm date, and photo evidence taken close to the event date strengthens the claim considerably.

St. Francis’s River-Town Roots and Window Styles

St. Francis takes its name from the Rum River, named by explorer Louis Hennepin in 1680 after St. Francis of Assisi, and the city’s original footprint grew up around a dam, gristmill, and sawmill built in 1855. Homes near that original downtown corridor often carry older double-hung wood windows with rough openings sized to decades-old standards, meaning a straight swap with a modern off-the-shelf vinyl unit isn’t always possible without a custom order or minor frame modification. Homeowners in these older homes should ask a contractor specifically how they handle non-standard openings before assuming a quoted per-window price applies to their home.

Is There a Window Contractor Based in St. Francis Itself?

Not exactly — St. Francis is a smaller city, and neither Zablocki Roofing nor Langerman Exteriors maintains a physical office within city limits. Both companies do maintain dedicated St. Francis service pages specifically for window and door work, rather than treating the city as an afterthought on a broader regional list, which is a meaningfully different level of documented local commitment than a company with no St. Francis-specific presence at all.

Frequently Asked Questions

How much does window replacement cost in St. Francis, MN?

Full-house window replacement in St. Francis typically runs $8,000 to $22,000 for 10 to 15 windows, depending on frame material and glass package.

Is there a window contractor based in St. Francis itself?

Not headquartered in the city, but Zablocki Roofing and Langerman Exteriors both maintain dedicated St. Francis service pages for window and door replacement rather than generic regional listings.

Should I choose vinyl or fiberglass windows for a St. Francis home?

Fiberglass handles Minnesota’s wide temperature swings with less expansion and contraction than vinyl, which can extend seal life. Vinyl costs less upfront and remains a solid choice for budget-conscious full-home replacement.

Can I combine window replacement with siding, roofing, or gutters?

Yes. Both Zablocki Roofing and Langerman Exteriors offer windows alongside siding, roofing, and gutters, and Owl Roofing can bundle window replacement with a roofing or siding project to avoid setup costs twice.

Will homeowners insurance cover window replacement in St. Francis?

Insurance typically covers window replacement when hail or wind causes documented impact damage to the glass or frame, not when windows are simply old or drafty.

Get a Free Window Estimate from Owl Roofing

If your St. Francis home has drafty or fogged windows, a combined window-and-roof inspection often catches issues a window-only quote would miss. Request a free estimate or contact our team to schedule an inspection. Check our roof cost guide for bundling ideas, and ask about our financing options.