Are Landmark Windows Still ENERGY STAR® Certified?

Yes. Landmark Windows can be built to meet ENERGY STAR® certification by using modern glazing, thermal breaks, and low-E coatings, delivering insulation and efficiency comparable to top-performing windows while maintaining a landmark-appropriate look.

How Do Landmark Windows Compare to Newer High-Performance Brands?

They hold their own. Our projects show Landmark Windows meeting similar insulation and sound ratings as modern competitors, with the added benefit of custom historic detailing that mass-produced units often lack.

Do Landmark Windows Still Meet 2025 Energy Efficiency Standards?

Yes. With insulated glass units, gas fills, and thermally broken frames, Landmark Windows can be specified to satisfy current energy codes while remaining compliant with NYC Landmarks Preservation Commission rules.

Are Landmark Windows Worth It Compared to Newer Competitors?

Often, yes. Off-the-shelf windows may not pass Landmarks review, which risks delays and rework. Landmark-approved units combine code compliance, long-term efficiency, and historic accuracy—typically the smarter long-term investment.

What’s the Current Warranty and Performance Rating of Landmark Windows?

Manufacturers we work with provide strong warranties on frames, glazing, and finishes, and performance ratings that meet or exceed industry standards.

Are Landmark Windows Still ENERGY STAR® Certified?

Yes. Landmark Windows can be built to meet ENERGY STAR® certification by using modern glazing, thermal breaks, and low-E coatings, delivering insulation and efficiency comparable to top-performing windows while maintaining a landmark-appropriate look.

How Do Landmark Windows Compare to Newer High-Performance Brands?

They hold their own. Our projects show Landmark Windows meeting similar insulation and sound ratings as modern competitors, with the added benefit of custom historic detailing that mass-produced units often lack.

Do Landmark Windows Still Meet 2025 Energy Efficiency Standards?

Yes. With insulated glass units, gas fills, and thermally broken frames, Landmark Windows can be specified to satisfy current energy codes while remaining compliant with NYC Landmarks Preservation Commission rules.

Are Landmark Windows Worth It Compared to Newer Competitors?

Often, yes. Off-the-shelf windows may not pass Landmarks review, which risks delays and rework. Landmark-approved units combine code compliance, long-term efficiency, and historic accuracy—typically the smarter long-term investment.

What’s the Current Warranty and Performance Rating of Landmark Windows?

Manufacturers we work with provide strong warranties on frames, glazing, and finishes, and performance ratings that meet or exceed industry standards.

Are Landmark Windows Still ENERGY STAR® Certified?

Yes. Landmark Windows can be built to meet ENERGY STAR® certification by using modern glazing, thermal breaks, and low-E coatings, delivering insulation and efficiency comparable to top-performing windows while maintaining a landmark-appropriate look.

How Do Landmark Windows Compare to Newer High-Performance Brands?

They hold their own. Our projects show Landmark Windows meeting similar insulation and sound ratings as modern competitors, with the added benefit of custom historic detailing that mass-produced units often lack.

Do Landmark Windows Still Meet 2025 Energy Efficiency Standards?

Yes. With insulated glass units, gas fills, and thermally broken frames, Landmark Windows can be specified to satisfy current energy codes while remaining compliant with NYC Landmarks Preservation Commission rules.

Are Landmark Windows Worth It Compared to Newer Competitors?

Often, yes. Off-the-shelf windows may not pass Landmarks review, which risks delays and rework. Landmark-approved units combine code compliance, long-term efficiency, and historic accuracy—typically the smarter long-term investment.

What’s the Current Warranty and Performance Rating of Landmark Windows?

Manufacturers we work with provide strong warranties on frames, glazing, and finishes, and performance ratings that meet or exceed industry standards.

Are Landmark Windows Still ENERGY STAR® Certified?

Yes. Landmark Windows can be built to meet ENERGY STAR® certification by using modern glazing, thermal breaks, and low-E coatings, delivering insulation and efficiency comparable to top-performing windows while maintaining a landmark-appropriate look.

How Do Landmark Windows Compare to Newer High-Performance Brands?

They hold their own. Our projects show Landmark Windows meeting similar insulation and sound ratings as modern competitors, with the added benefit of custom historic detailing that mass-produced units often lack.

Do Landmark Windows Still Meet 2025 Energy Efficiency Standards?

Yes. With insulated glass units, gas fills, and thermally broken frames, Landmark Windows can be specified to satisfy current energy codes while remaining compliant with NYC Landmarks Preservation Commission rules.

Are Landmark Windows Worth It Compared to Newer Competitors?

Often, yes. Off-the-shelf windows may not pass Landmarks review, which risks delays and rework. Landmark-approved units combine code compliance, long-term efficiency, and historic accuracy—typically the smarter long-term investment.

What’s the Current Warranty and Performance Rating of Landmark Windows?

Manufacturers we work with provide strong warranties on frames, glazing, and finishes, and performance ratings that meet or exceed industry standards.

Are Landmark Windows Still ENERGY STAR® Certified?

Yes. Landmark Windows can be built to meet ENERGY STAR® certification by using modern glazing, thermal breaks, and low-E coatings, delivering insulation and efficiency comparable to top-performing windows while maintaining a landmark-appropriate look.

How Do Landmark Windows Compare to Newer High-Performance Brands?

They hold their own. Our projects show Landmark Windows meeting similar insulation and sound ratings as modern competitors, with the added benefit of custom historic detailing that mass-produced units often lack.

Do Landmark Windows Still Meet 2025 Energy Efficiency Standards?

Yes. With insulated glass units, gas fills, and thermally broken frames, Landmark Windows can be specified to satisfy current energy codes while remaining compliant with NYC Landmarks Preservation Commission rules.

Are Landmark Windows Worth It Compared to Newer Competitors?

Often, yes. Off-the-shelf windows may not pass Landmarks review, which risks delays and rework. Landmark-approved units combine code compliance, long-term efficiency, and historic accuracy—typically the smarter long-term investment.

What’s the Current Warranty and Performance Rating of Landmark Windows?

Manufacturers we work with provide strong warranties on frames, glazing, and finishes, and performance ratings that meet or exceed industry standards.

Are Landmark Windows Still ENERGY STAR® Certified?

Yes. Landmark Windows can be built to meet ENERGY STAR® certification by using modern glazing, thermal breaks, and low-E coatings, delivering insulation and efficiency comparable to top-performing windows while maintaining a landmark-appropriate look.

How Do Landmark Windows Compare to Newer High-Performance Brands?

They hold their own. Our projects show Landmark Windows meeting similar insulation and sound ratings as modern competitors, with the added benefit of custom historic detailing that mass-produced units often lack.

Do Landmark Windows Still Meet 2025 Energy Efficiency Standards?

Yes. With insulated glass units, gas fills, and thermally broken frames, Landmark Windows can be specified to satisfy current energy codes while remaining compliant with NYC Landmarks Preservation Commission rules.

Are Landmark Windows Worth It Compared to Newer Competitors?

Often, yes. Off-the-shelf windows may not pass Landmarks review, which risks delays and rework. Landmark-approved units combine code compliance, long-term efficiency, and historic accuracy—typically the smarter long-term investment.

What’s the Current Warranty and Performance Rating of Landmark Windows?

Manufacturers we work with provide strong warranties on frames, glazing, and finishes, and performance ratings that meet or exceed industry standards.

Andrew Grisafi

June 12, 2025

Windows, Doors, High performance, Landmark, NYC

Door Anatomy | Guide to Parts, Terms and Functions

Andrew Grisafi

June 12, 2025

Windows, Doors, High performance, Landmark, NYC

Door Anatomy | Guide to Parts, Terms and Functions

When it comes to historic preservation, the elegance of a door lies not only in its design but also in its anatomy. From grand entryways in landmark buildings to charming brownstone doors in New York City, understanding the parts of a door can help you make more informed decisions.

Andrew Grisafi

May 28, 2021

Landmark, High performance, Doors, Windows, Case Study

From modest stable to loft-style condo in the West Village

Andrew Grisafi

May 28, 2021

Landmark, High performance, Doors, Windows, Case Study

From modest stable to loft-style condo in the West Village

Historical Windows of New York is hard at work bringing this Perry Street building’s fenestration into the 21st century with custom, high-performance thermally broken double pane steel windows and doors.

Andrew Grisafi

October 20, 2020

Landmark, Windows, Doors, Storefronts, High performance

Happy birthday, Landmarks Preservation Commission

Andrew Grisafi

October 20, 2020

Landmark, Windows, Doors, Storefronts, High performance

Happy birthday, Landmarks Preservation Commission

Fifty-five years ago, New York City Mayor Wagner signed the Landmarks Law, creating the Landmarks Preservation Commission (LPC). LPC’s mission is to protect NYC’s architecturally, historically, and culturally significant buildings.

Andrew Grisafi

September 29, 2020

Partnership, High performance, Doors, Windows, Storefronts, Product Highlight

Take a peek at Bertrand's passive window series

Andrew Grisafi

September 29, 2020

Partnership, High performance, Doors, Windows, Storefronts, Product Highlight

Take a peek at Bertrand's passive window series

When it comes to passive houses, you can’t be passive about your choice in windows. Every choice is a careful balance of performance and aesthetics.

Andrew Grisafi

September 23, 2020

Partnership, Doors, Windows, Storefronts, High performance

Why you want (thermally) broken windows and doors

Andrew Grisafi

September 23, 2020

Partnership, Doors, Windows, Storefronts, High performance

Why you want (thermally) broken windows and doors

Our partner Brombal handcrafts bespoke metal windows in Italy, for the finest high performance thermally broken steel framed windows, doors, and curtain walls.

Andrew Grisafi

August 8, 2020

Case Study, Landmark, High performance, Windows, Doors

Bespoke, hand-carved mahogany, and high performance

Andrew Grisafi

August 8, 2020

Case Study, Landmark, High performance, Windows, Doors

Bespoke, hand-carved mahogany, and high performance

This iconic home is the perfect representation of respecting historical architectural features while integrating time-honored craftsmanship and modern materials and technology for energy performance and safety.