History in the Making - Heirloom WIndowsHeirloom Windows Decoration

Historic Windows
Replacement and new construction

Welcome to Heirloom Windows where unique hand crafted wood window appearances meet contemporary performance for historic properties. At Heirloom we use 50 year warranty Accoya pine combined with 1/4" vacuum insulated glass to create the most durable and efficient windows in the country.

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Historically Authentic Wood Windows

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When its time to replace the windows in historic properties, most people want a product that ensures the original character of the building will be preserved, and that’s Heirloom’s promise to you. Whether you are replacing your existing sash, need a total window replacement, need replicas for your addition or your new, historically themed home, we slavishly reproduce all the subtle characteristics that define traditional windows. This makes them richer and more interesting than today’s off the shelf products, even those touted as “historic” by the big brands.

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Accoya Wood Windows

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We create long lasting and maintenance free windows through incorporating the use of Accoya wood in each of our designs. Sustainably sourced Accoya wood carries a 50 year warranty and is rot resistant, experiences minimal swelling and shrinking, and lowers energy costs compared to traditional wood windows.

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Spacia Vacuum Insulated Glass

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The advantages of the use of Vacuum Insulated Glass over the use of regular insulated glass is the thickness. Replacement windows with regular insulated glass in historic homes require jamb modification as well as jamb liners to install the replacement sash system. Vacuum insulated glass is thin enough to install within the existing jamb and incorporate deep millwork sash profiles only found in historic windows. A 1/4" Vacuum Insulated Glass unit has the efficiency of a 1" thick IGU

Furthermore, because Vacuum Insulated Glass is only slightly thicker than your original glass, when muntins are applied they look exactly like your originals. No unsightly spacer bars.

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Performance Wood Window Components

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  • Single pane units with True Divided Lites.
  • Thick insulated glass with Simulated Divided Lites
  • Historic sash millwork profiles
  • Minimally invasive and cheaper installation within existing jambs. New jambs can be made as well.
  • Totally weather-stripped with contemporary, hidden materials.
  • Hidden window sash balance system that allows insulation.
  • Traditional joinery, mortise and tenoned upper and lower window sash.
  • Made with Accoya wood that carries a 50-year warranty.
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Historic Replica Windows

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Let Heirloom Windows create brand new, historically styled, high efficiency windows for your new home, room addition or total window replacement project. We simply build super solid jambs around the sash we offer our clients for historic restorations. These sash mimic all the aesthetic characteristics of 100 year old windows. We can do any size and any configuration, including geometric sash or muntins.

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Replacement Sash System

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Swap out tired, leaky old sash with identical new ones yourself! Identical – except with super performance insulated glass, contemporary weather-stripping everywhere you need it and optional balance system that allows you to insulate your cavities. All of these performance goodies hidden from sight so no one will ever know they’re new windows (except they’re clean and operate).

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Sash Weatherstripping System

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When replacement is not an option, stopping air infiltration is still a must. The  “Window  Logic” systems is the same materials we use on our new sash, applied to your existing windows. We provide all the seals and tooling to completely weather-strip your windows. Window Logic will make your windows air-tight and operate smoothly. Ask about our amazing Vacuum Insulated Glass to retrofit into your sash.

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What Our Customers Say

"We called Heirloom Windows to create specific design for our historical downtown. They did a magnificent job."
Jane, Downtown Cambridge Historical Society

What Our Customers Say

"We called Heirloom Windows to create specific design for our historical downtown. They did a magnificent job."
Ann, Cape Cod

What Our Customers Say

"I had been looking for someone to solve my window problem for years. Bill was able to build replica windows replacing our 100 plus year old windows. He used modern technology, coupled with Indiana poplar and high tech cladding, and double pane insulated glass to exactly duplicate our ornate window design. He then installed them into the original frames using his “Window Logic weather stripping system. We have received many compliments on our new windows, which compliment our house so well. Bill is a true craftsman, who can be truly proud of his work and products.”
G. M.

What Our Customers Say

I wanted to drop you a note about the gorgeous windows you custom created. They not only make the exterior appearance of the building more historically accurate, but the interior aesthetics are also greatly improved and particularly beautiful in the afternoon sunlight. Thank you for your craftsmanship, advice and workmanship."
Happy Customer

What Our Customers Say

"Bill and Lois are miracle workers. Our windows are beautifully historical and energy efficient."
Steve, Boston

What Our Customers Say

"The workmanship is incredible!"
Mary, Kraynak

Replacing windows in an old house?

Heirloom Windows Decoration
We are creators and providers of historic replica wood windows. We make wood windows to match your original sash or build them with the features of just what you want. Let's make history together!
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