Window replacement Denver: energy efficient, hail-rated, ENERGY STAR compliant

Precision Exteriors Restoration is a licensed exterior contractor in Denver, Colorado (Colorado License #0248041) providing residential window replacement across the Denver Metro and Front Range, full-frame and pocket replacement, double and triple pane insulated glass units, Low-E glass, altitude-rated IGU construction, and ENERGY STAR compliant products meeting Colorado's HB 23-1161 requirements. Founded in 2016, we bring 20+ years of combined experience and 3,000+ completed Front Range exterior projects to every window replacement.

Window replacement is the most consequential window decision a Denver homeowner makes, and the Colorado market has specific performance requirements that generic window contractor guidance does not address. Altitude-related IGU pressure considerations, thermal cycling from extreme temperature swings, Colorado's 300-day UV intensity, and the Front Range hail frequency all shape which products perform over a 20 to 30-year installation life. In 2024, we completed window replacements alongside roofing and siding projects across Denver, Aurora, and Montbello. In 2025, we continued exterior replacement work across Aurora and Denver every hail season since 2016.

We are an Owens Corning Preferred Contractor and CertainTeed Master Installer. BBB A+ Accredited. NRCA member. All window replacements are backed by our 10-year workmanship warranty. Free inspections, no obligation.

For Denver Metro homeowners, the law has a practical complication that most window contractors are not explaining clearly. Colorado's Northern climate zone ENERGY STAR requirements specify U-factor thresholds of 0.27 or below and solar heat gain coefficient (SHGC) values that must be met simultaneously. At Denver's elevation of 5,280 feet, insulating glass units face lower atmospheric pressure than at sea level. Many IGU configurations use capillary or breather tubes to equalize internal gas pressure at altitude, but these tubes compromise the sealed argon gas fill that is critical to achieving the low U-values ENERGY STAR 7.0 requires. The result: not every window carrying an ENERGY STAR label performs correctly at Denver's elevation, and not every installer is navigating this correctly.

We source and specify window products that meet both the HB 23-1161 compliance threshold and the altitude-performance realities of the Front Range. If you have received a proposal from a contractor that does not address this requirement, ask directly whether the windows specified are ENERGY STAR compliant for Colorado's Northern climate zone and whether the IGU construction is appropriate for installation at 5,280 feet.

Double pane with Low-E and argon is the right choice for most Denver Metro homes

A quality double pane IGU with Low-E coating and argon gas fill, specified correctly for altitude, achieves U-factors of 0.27 to 0.30, meets HB 23-1161 ENERGY STAR requirements, and delivers meaningfully better thermal performance than the 20-year-old double pane it is typically replacing. For a home in the Denver Metro at 5,280 feet, on standard exposures, a correctly specified double pane replacement is a strong performer.

Triple pane makes sense in specific Colorado scenarios

The third pane and second gas chamber reduce U-factor further, typically to 0.18 to 0.22, and provide additional noise attenuation. Triple pane is worth the premium for north-facing exposures that see limited solar gain, for homes at higher Front Range elevations above 6,000 feet where temperature extremes are more severe, for homeowners prioritizing noise reduction from street or traffic exposure, and for large glass area installations where thermal performance at the glass surface matters more. Triple pane units are heavier, require more robust frames, and cost approximately 20 to 30 percent more installed than equivalent double pane. For most standard Denver Metro replacements on moderate exposures, the performance premium over correctly specified double pane is modest relative to the cost difference.

The altitude factor for both

Whether you choose double or triple pane, the IGU must be manufactured or adjusted for Front Range altitude. Windows produced and sealed at sea level arrive in Denver with internal gas chambers under slight positive pressure, the gas expands at altitude, bowing the panes outward slightly and stressing the edge seal prematurely. Altitude-rated IGUs address this through factory-sealed pressure adjustment or capillary tube equalization at installation. We specify altitude-appropriate products on every replacement.

Windows are frequently underclaimed after hail events

Insurance adjusters responding to a storm damage call commonly scope broken glass but miss frame damage, cracked exterior casing, dented aluminum cladding, and destroyed screens. All of these are functional components of the window system, screens protect the glass from debris impact in subsequent events, aluminum cladding is part of the weather seal, and cracked casing creates moisture infiltration pathways. A complete window damage scope after a hail event includes every compromised component, not just broken glass.

Hail damage to windows looks specific

On glass, look for spider-web cracking emanating from the impact point, or complete shattering on direct large-hail strikes. On vinyl frames, hail impact leaves indentations and stress cracks at corners. On aluminum-clad frames, denting is visible on close inspection but often missed from ground level. On exterior casing, check for cracks at corners and where casing meets the window frame. On screens, direct hail impact destroys screen mesh, destroyed screens are documented evidence that the same hail event reached the window glass and frame.

Photograph everything before temporary boarding

Once a broken window is boarded, documentation of the damage becomes a reconstruction effort rather than direct evidence. Take photographs of every affected window, close-up of the glass damage, the frame corners, the exterior casing, and the screen, before any temporary cover is applied. These photographs, timestamped by the camera, establish the damage condition on the date of the storm. They are the single most important piece of documentation in a window claim.

Combined claims with roofing and siding

Window damage from a hail event that also damaged roofing and siding should be documented and claimed together. A combined exterior assessment captures the full scope, roofing, siding, gutters, and windows, in a single inspection and produces a comprehensive scope that covers all storm-related damage in one claim filing. We routinely identify window damage during post-storm roofing and siding inspections that the homeowner had not yet noticed.

For Denver homeowners, window damage often appears alongside gutters and siding damage. We document the window scope, then coordinate with related exterior scopes when the same hail event affected the rest of the home.