Deciding between repairing or replacing historic windows is a pivotal choice that balances preservation with modern performance. Following the Secretary of the Interior’s Standards for Rehabilitation, we prioritize repairing deteriorated historic features whenever practical. This approach preserves the original craftsmanship and fabric of your home while often being the more sustainable choice.

When to Choose Repair:

• Preservation of Original Fabric: Repair is the default choice for windows with repairable wear or those featuring fine craftsmanship.
• Visibility: Windows on primary, street-facing elevations are held to stricter standards for historic fidelity.
• Performance Upgrades: Often, energy efficiency concerns can be resolved without full replacement by adding storm windows, weather stripping, or high-quality glazing.

When Full Replacement is the Better Value:

• Severe Deterioration: Replacement becomes necessary when the original units suffer from extensive damage or structural compromise where repair is no longer reasonable.
• Long-term Durability: In Colorado’s high-altitude climate—where UV radiation is 50% more intense than at sea level—modern materials like fiberglass frames and high-altitude glass offer superior resistance to thermal expansion and UV damage.
• Code Compliance: New installations must meet 2021 IECC energy standards (U-factor ≤0.30 and SHGC ≤0.25) and local Denver codes.

Whether we are restoring your existing windows or performing a full replacement using custom-sized units to match historic profiles, our Design Build Services provide a single point of accountability. We manage everything from documentation and Denver-area permitting to final installation.

Please note: Estimates are preliminary and subject to change after site inspection and a full scope review. Project outcomes and timelines may vary based on site conditions, permitting, material availability, and unforeseen issues. Please consult a licensed contractor for definitive advice; verify licensure with the Colorado Department of Regulatory Agencies (DORA).

• Best Historic Home Window Replacement in Centennial: Expert Guide