Window Services Denver — Replacement, Repair, Installation & Emergency Response
Licensed Roofing Contractor — Founded 2016 — Serving Front Range Homeowners for Nearly a Decade · Colorado License #0248041 · 3,000+ Completed Projects Across Denver Metro and Front Range · Owens Corning Preferred Contractor · CertainTeed Master Installer · BBB A+ Accredited · 20+ Years Combined Experience · 10-Year Workmanship Warranty · Free Inspections — No Obligation · 24-Hour Emergency Response
Precision Exteriors Restoration is a licensed exterior contractor in Denver, Colorado (Colorado License #0248041) providing residential window services across the Denver Metro and Colorado's Front Range — window replacement, window repair, new window installation, and 24-hour emergency window response following storm damage or sudden glass failure. Founded in 2016, we bring 20+ years of combined experience and 3,000+ completed exterior projects to every window assessment.
Windows on Colorado's Front Range operate under conditions that accelerate failure faster than most other markets in the country. At Denver's elevation — 5,280 feet, with surrounding communities reaching higher — UV intensity runs approximately 25 percent above sea level, accelerating frame degradation and insulated glass unit seal breakdown over time. Colorado's seasonal temperature range swings from sub-zero winter lows to glass-surface temperatures exceeding 130°F on south and west exposures in summer, creating chronic thermal cycling stress on every window component. And the Front Range's position in Hail Alley means sudden glass breakage, frame damage, and seal failure from storm impact are year-round risks, not rare events.
In 2024, we responded to window damage calls alongside roofing and siding damage across Denver, Aurora, and Montbello following that season's major hail events. In 2025, we continued exterior restoration work across Aurora and Denver. We have been a Denver-based, Denver-focused exterior contractor every hail season since 2016 — which means we understand how this specific climate degrades window systems, and how to assess them accurately.
We are an Owens Corning Preferred Contractor and CertainTeed Master Installer. BBB A+ Accredited. NRCA member. All window work is backed by a 10-year workmanship warranty. Free inspections, no obligation.
Why Windows Fail Faster in Colorado
Understanding the specific failure modes in this climate helps Denver homeowners recognize problems early — before a minor repair becomes a replacement project.
IGU seal failure from thermal cycling. The insulated glass unit — the hermetically sealed assembly of two or three glass panes with argon or krypton gas between them — is the performance core of every modern window. In Colorado, this seal faces aggressive stress from daily and seasonal temperature swings that cause the gas fill to expand and contract repeatedly. Over time, that cycling fatigues the edge seal. When it fails, outside air infiltrates the sealed space, moisture condenses between the panes, and what you see is fogging, cloudiness, or a milky film between the glass — a window that is now performing no better than a single pane. South and west-facing windows fail first due to higher daily thermal load on those elevations.
UV-accelerated frame degradation. Colorado's 300 days of annual sunshine at altitude drives UV intensity significantly above national averages. Vinyl frames — the most common material on Denver Metro homes built between 1980 and 2015 — yellow, become brittle, and lose dimensional stability as UV exposure accumulates over years. Weatherstripping dries and hardens in Colorado's low humidity, losing its compression seal. The combination of UV damage and low humidity creates draft conditions at frame perimeters that are often misdiagnosed as failed glass units when the actual failure is at the frame.
Altitude-specific IGU pressure issues. At Denver's elevation, the atmospheric pressure acting on window glass is lower than at sea level. IGUs manufactured and sealed at lower elevations arrive in Denver with internal gas pressure calibrated for sea-level conditions — which means the sealed gas chambers bow outward slightly at altitude. Over time, this pressure differential stresses seals prematurely. Windows manufactured, distributed, and sealed for Front Range elevation perform better over time than those shipped from lower-altitude factories without altitude adjustment. This is a real differentiator in the Denver window market, and one that homeowners rarely hear explained clearly.
Hail and debris impact. The Front Range averages 7 to 9 significant hail events annually. Events producing hail at 1 inch and above — common in Aurora, Thornton, and the northeast Denver suburbs during hail season — can shatter window glass, crack frames, dent aluminum cladding, and damage window screens and exterior casing. Hail damage to windows is frequently underclaimed in storm damage assessments: adjusters commonly scope only visibly broken glass while missing frame damage, cracked exterior casing, and screen destruction that collectively constitute functional damage eligible for coverage.
Colorado's New Window Law — What Denver Homeowners Need to Know
As of January 2026, Colorado House Bill 23-1161 requires all residential window, door, and skylight replacements on structures three stories or lower to meet ENERGY STAR certification for the Northern climate zone. If you are replacing windows on your Denver Metro home in 2026 or beyond, this is not optional — it is a legal requirement.
For Denver homeowners, the law creates a practical complication. Colorado's Northern climate zone ENERGY STAR requirements specify U-factor and solar heat gain coefficient (SHGC) thresholds that are challenging to meet at altitude. At 5,280 feet, insulating glass units face the pressure differential issue described above — many IGU configurations that use capillary tubes to equalize pressure cannot achieve the low U-values required under Energy Star 7.0 without argon gas fill, and capillary tubes compromise the gas seal. The result is that not every window that carries an ENERGY STAR label on the box will perform correctly at Denver's elevation.
We source and install windows that meet both the HB 23-1161 compliance requirement and the altitude performance realities of the Front Range. If you have received a proposal from another contractor that does not address this requirement, or does not address altitude-rated IGU performance, that is worth asking about before committing.
Our Window Services
Every window project begins with a free inspection. We assess the full window system — frame condition, seal integrity, glass unit performance, flashing integration, exterior casing, and weatherstripping — before recommending a path forward. We do not recommend replacement when repair restores performance.
Window Replacement
Window replacement is warranted when insulated glass unit seals have failed, frames have deteriorated beyond repair, hail or debris has broken glass or damaged frames beyond restoration, or when upgrading to higher-performance units for thermal, acoustic, or compliance reasons.
Colorado-specific replacement considerations include altitude-rated IGU products, Low-E glass coatings calibrated for Colorado's solar gain balance, double vs. triple pane decision-making based on home orientation and elevation, and HB 23-1161 ENERGY STAR compliance for all 2026 and beyond replacements.
See full Window Replacement details → Includes: double vs. triple pane comparison for Colorado, U-factor and SHGC guidance, hail damage documentation, insurance claim support, cost context, and what the replacement process covers.
Window Repair
Window repair addresses failed seals in insulated glass units where frame condition warrants unit-only replacement rather than full frame swap, hardware failures — locks, operators, balances, cranks — frame damage from wood rot or minor physical impact, and weatherstripping and flashing failures at window perimeters.
Not every fogged or drafty window requires full replacement. When the frame is structurally sound and the failure is contained, repair is a cost-effective path. The key diagnostic question is whether the frame integrity justifies preserving it — we assess that directly during inspection rather than defaulting to either repair or replacement.
See full Window Repair details → Includes: IGU-only replacement process, hardware repair specifics, weatherstripping replacement, draft diagnosis, and when repair stops making sense.
Window Installation
New window installation covers projects where windows are being added to an existing wall or where rough openings are being modified for different unit sizes — home additions, egress conversions, remodel projects adding light or ventilation to existing spaces.
New installation involves more structural scope than replacement-in-kind: correct header sizing, framing modification, rough opening construction, full flashing and air sealing integration with the wall assembly, and building permit coordination. It is a fundamentally different scope from window replacement, with different cost, timeline, and structural requirements.
See full Window Installation details → Includes: rough opening requirements, egress window code specifications, permit process, structural scope, and what new installation vs. replacement-in-kind involves.
Emergency Window Services
Hail impacts, debris strikes, and break-in events can create sudden window failures that leave a home exposed to weather and security risks. Emergency window services provide same-day and next-day response — temporary boarding, glass unit removal and covering, and interim sealing to protect the interior until permanent repair or replacement can be safely scoped and completed.
Available 24 hours. Call (720) 408-1840 for emergency response.
See full Emergency Window Services details → Includes: what to do before we arrive, insurance documentation, temporary vs. permanent solutions, and response times across the Denver Metro.
Windows in the Context of Your Full Exterior System
Windows do not fail in isolation. The roofing, siding, and gutter systems surrounding every window opening directly affect window performance and longevity — and storm events that damage windows almost always damage other exterior systems simultaneously.
Flashing and water management. Window flashing — the sheet metal and membrane system that directs water away from the rough opening — sits at the intersection of the window unit, the wall sheathing, and the exterior cladding. When siding is replaced without proper window flashing inspection and integration, new moisture infiltration pathways are created at the window perimeter. When roofing work disturbs eave and rake flashing near dormer windows, window frame moisture exposure increases. An exterior contractor who works across roofing, siding, and windows brings a complete picture to any moisture problem near a window opening.
Storm damage assessment. A hail event that breaks window glass will also leave impact evidence on roofing, siding, gutters, and soft metals across the same elevations. Insurance adjusters who assess only the window claim miss the full scope. A combined exterior assessment after any significant storm event — covering all systems in a single inspection — produces more complete documentation and a more accurately scoped claim. We routinely identify window damage during post-storm roofing and siding inspections that homeowners were not aware of.
Siding and window integration at replacement. When siding is replaced, the integration point between new siding, window casing, and flashing requires deliberate attention. Gaps, improper lapping, or missing sealant at this junction are the most common source of post-renovation moisture infiltration. We manage this integration as part of combined siding and window replacement scopes.
Explore related exterior services:
- Siding Services → — siding replacement, repair, and storm damage across all material types
- Roofing Services → — roofing inspection, repair, and replacement across the Front Range
- Gutter Services → — seamless gutters, gutter guards, and drainage management
- Exterior Restoration Denver → — full exterior restoration combining multiple systems
- Hail Damage → — full hail assessment process for all exterior systems
- Insurance & Storm Damage Guidance → — documentation and claims process
Why an Exterior Contractor for Windows
The Denver window market includes window-only specialists, big-box retailers, national window brands with local franchises, and full exterior contractors like Precision Exteriors. Here is why the contractor type matters.
Windows and the surrounding systems are inseparable. The most common cause of window performance failure that is not the window itself is improper flashing, deteriorated exterior casing, or moisture infiltration at the siding-to-window transition. A window-only installer assesses what they can sell you. A full exterior contractor assesses the complete system — wall assembly, flashing, casing, and the window unit together — and identifies whether the window or the surrounding system is the actual failure point. We frequently find that homeowners calling about a drafty window actually have a weatherstripping problem, a casing gap, or a flashing failure. Those are repair items, not replacement items. We tell you that.
Post-storm combined scope is standard. After a hail event, damaged windows, roofing, siding, and gutters on the same home need to be documented together for a single insurance claim. A window-only contractor documents windows. We document the complete exterior — windows alongside the roofing, siding, and gutter damage from the same event — producing a single comprehensive claim scope that captures the full extent of storm damage. That matters for claim completeness.
Licensed Colorado contractor. Colorado License #0248041. We carry the license, insurance, and accountability that homeowners should require from any exterior contractor. The Colorado Division of Insurance specifically warns homeowners following storm events to work only with licensed and insured contractors. We are that contractor.
Windows Precision Exteriors' FAQs
How do I know if my windows need repair or full replacement?
The clearest indicators for full replacement are failed IGU seals — visible as fogging, condensation, or a milky film between panes that does not clear — frame deterioration from rot, significant warping, or physical damage that prevents proper operation, and hail or debris impact that has broken glass or structurally damaged the frame. Repair is appropriate when the frame is sound and the failure is contained: a failed glass unit in a solid frame, hardware failure, or weatherstripping and flashing issues. A free inspection that evaluates both frame and glass unit condition is the reliable way to make this call.
Why do windows fog between the panes in Colorado?
Fogging between panes is caused by seal failure on the insulated glass unit. When the hermetic seal breaks, outside air — carrying moisture — enters the sealed space and condenses on interior glass surfaces when temperatures drop. Colorado's thermal cycling, high UV, and low humidity accelerate this process compared to more temperate climates. A failed IGU seal cannot be repaired — the glass unit requires replacement. If the frame is in good condition, IGU-only replacement is often the right path.
Does Colorado law require specific windows for replacement projects?
Yes. As of January 2026, HB 23-1161 requires ENERGY STAR certification for all replacement windows on residential structures three stories or lower in Colorado. For Denver Metro homeowners, this means the windows you install must meet Northern climate zone U-factor and SHGC thresholds. There are altitude-specific considerations around how this compliance works at 5,280 feet — we navigate those requirements on every replacement project.
Does insurance cover hail damage to windows?
Hail damage that breaks glass, cracks frames, or compromises window components so they no longer function correctly is typically covered in storm damage claims under homeowners insurance. The standard is functional damage — not purely cosmetic. Documentation with clear photographs before any temporary boarding is the most important first step. Window damage is frequently included in the same claim as roofing and siding damage from the same event.
What window features matter most in Denver's climate?
The most relevant factors for Front Range windows: Low-E glass coatings that balance solar heat gain control with passive solar benefit at altitude; U-factor of 0.30 or below for thermal performance in Colorado winters; frame material stability across wide thermal cycling ranges — fiberglass and composite frames outperform vinyl in extreme temperature cycling; altitude-rated IGU construction for long-term seal integrity at 5,280 feet; and ENERGY STAR certification for HB 23-1161 compliance.
How long do windows last in Colorado?
Quality vinyl-framed windows installed correctly in Colorado typically last 20 to 30 years. Fiberglass and composite framed units last 30 to 40 years or more. The most common failure mode is IGU seal failure, typically occurring at 15 to 25 years depending on glass quality, UV exposure, and thermal cycling frequency. South and west-facing windows typically fail first. Frame deterioration usually follows seal failure, and occurs later in quality installations.
Serving Denver Metro and Colorado's Front Range
Precision Exteriors Restoration provides window services across the Denver Metro and Colorado's Front Range — Denver, Aurora, Lakewood, Arvada, Westminster, Thornton, Centennial, Littleton, Highlands Ranch, Castle Rock, Golden, Brighton, Englewood, Parker, Broomfield, and Wheat Ridge. Colorado License #0248041. 999 18th St UNIT 3000, Denver, CO 80202. (720) 408-1840. precisionexco.com.
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Schedule a Complementary Inspection
Call (720) 408-1840 or fill out the contact form for a free, no-obligation window inspection. We assess frame condition, glass unit integrity, seal performance, flashing, and weatherstripping — and give you an honest recommendation: repair, replacement, or no action needed.
Available 7 days a week. Emergency response available 24 hours.
