Hi! I’m Penelope and I’m new around here, but my Mommy and Daddy know a lot about historic preservation and have been teaching me new things every day.Penelope Pic (1)

Yesterday they taught me not to chew on Karri’s office slippers (even if I really want to) and then they taught me something that really blew my mind…

Historic wood windows are one of the most “at risk” features of our historic homes.

Now, I’m still learning words, but “at risk” sounds pretty bad to me.  And apparently it’s all because the replacement window industry wants us to believe their plastic windows are better than wood windows.

But my Mommy and Daddy tell me it isn’t true.  They say wood windows not only look better in old houses, they don’t cause the moisture issues replacement windows do, AND they are more energy efficient.  They told me the guidelines for the best way to take care of America’s historic buildings say you should preserve and maintain your wood windows instead of replacing them.

And Mommy and Daddy don’t usually lie to me.

My Grandpa Chuck tells me that so many people didn’t know this and fell into the replacement window sales company’s clutches, that he’s been replacing a lot of replacement windows lately.  (I guess when people realize the plastic windows they put in weren’t the right choice they call him to make wood windows for them.  I wanna be just like him when I grow up.)

Now I have a secret to tell you, but you have to promise not to tell my Mommy and Daddy…  They gave me a report I was supposed to read so I could tell you more about this, but I was too pooped from spending the day at the office and I fell asleep before I finished it.

So I’m going just going to let you read this report for yourself:

“Put Replacement Windows to Shame: 10 Tools to Make Your Historic Wood Windows Last for Generations”

Window Report Image (Smaller File)Mainstream consumer trends would have you believe that you should replace your historic wood windows with vinyl, or other synthetic replacement windows.

Of course, you own a historic home – not a McMansion – making you anything but the typical consumer who follows mainstream trends.

Boy is this report for you, because in it we are going to give you the knowledge and tools you need to buck the system and put replacement windows (and their uneducated salesmen) to shame.

To get your copy of the report, call or email Moira at 717.291.4688 or [email protected]

Historic Wood Window Restoration, Save Historic Wood Windows, Wood Windows vs. Replacement WindowsWood windows are an integral part of the innate energy efficiency of historical buildings. If we have learned anything from history it is that sometimes with all our modern advancements we do ourselves more harm than good.

Advancements in technology do not always produce better results, and construction technology isn’t exempt from that. Built in a time of readily available building materials and energy sources, modern building designs typically make poor use of both. Historical buildings were built when neither was in abundant supply and early designers made the most of building materials and design options to construct buildings with a powerful combination of harnessed natural resources and innovative design that worked together to maximize energy efficiency.

Everything from exterior paint colors, to locations of balconies, to numbers and placement of windows, to physical placement of buildings on lots was carefully considered to maximize heating, lighting, and ventilation in traditional construction.

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The results are astounding and studies have shown that properly restored and maintained 18th & 19th Century buildings can be just as energy efficient as new construction, and in many cases even more energy efficient. (Perhaps not surprisingly, studies have also shown that buildings built in the 1950’s through the 1970’s were the biggest energy consumers of all.)

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The historical wood windows in your building contribute to that energy efficiency and, contrary to urban legend, new replacement windows are not more energy efficient than historical wood windows. Typically, studies that conclude such a finding have compared new replacement windows with historical windows that

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have not been maintained or restored, are decaying, and have no complementary energy retrofits such as weather-stripping and storm windows.

If you would like to read these studies, you can access them in the resources section of our website.

Studies on energy efficiency also usually fail to consider “embodied energy”. Embodied energy represents the energy it took to manufacture a product. They say the greenest building is the one
already built when you consider this embodied energy – an existing energy investment that will never be able to be recaptured once you destroy the product it’s embodied in.

If the greenest building is the one already built, then the greenest window is the one already there. Historical wood windows have an embodied energy value that includes all the energy from harvesting and milling the wood to transporting and manufacturing the windows to installing them in your historical building.  Preserving existing windows conserves that embodied energy and reduces the use of additional energy when making replacement windows.

Which means that when you take all energy, energy expended on heating and cooling costs as well as the embodied energy, into consideration for defining the energy efficiency of windows – historical wood windows are far more energy efficient than replacement windows
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Even if you decide I’m too long-winded, or that I’m preaching to the choir, to read this entire post – MAKE SURE YOU SCROLL TO THE BOTTOM to get your free copy of a report on how to make wood windows last for generations we recently wrote.

 

Why Save Historic Wood Windows?

Did you know that historical wood windows are one of the most vulnerable and “at-risk” elements of our architectural heritage?

Historic Wood Window Restoration, Save Historic Wood Windows, Wood Windows vs. Replacement Windows

Preservation Virginia has proclaimed historical windows endangered, saying, “Historic wooden windows are destroyed daily in lieu of new, inferior windows. Salesmen convince owners and architectural review board members that replacement windows are superior to historic wooden windows when the truth is these historic windows can last longer than any new wooden window or vinyl clad window.”

Despite this, windows don’t often have a high priority on the list of things we should preserve in our built history. Yet they should. If eyes are windows into the soul, as the old adage goes, then surely windows are how we see into the soul of a historical building.

The windows in your historical building are an important contribution to how your historical building looks. Not only are they one of only a few parts of a building that serve as both and interior and exterior architectural feature, they usually make up about a quarter of the surface area of a historical building.

Many aspects of windows contribute to your building’s architectural style and historical fabric – height, width, and thickness of frames and sills, the visual design of sash components, the materials and color treatments used, and even the way light reflects off of the glass.

Muntins, historical glass, putty beading, moulding profiles, glazed opening widths, and regionally-distinct patterns and features are more distinct characteristics of original wood windows that contribute to your historical building’s façade.  And all of these varied between architectural styles and periods and from region to region, making wood windows living artifacts from history – an archeological goldmine that helps us understand and document our historical building practices and craftsmanship.

 

[sws_grey_box box_size=”630″] Beyond their importance in contributing to how your building looks, your building’s windows play an important role in how your building functions. Perhaps one of the most important of those functions is how windows serve as an integral part of a historical building’s design to “breathe” moisture. Historical buildings function as a cohesive, whole system to handle moisture infiltration and the original design, installation, and materials used – including, and especially, the windows – were all picked for your building’s specific system. Changing your windows can significantly impact how your home handles moisture – a road no homeowner wants to travel down. [/sws_grey_box]

 

Historic Wood Windows Vs. Replacement Windows

Historic Wood Window Restoration, Save Historic Wood Windows, Wood Windows vs. Replacement WindowsThese features and variances can be difficult to duplicate with modern technology. Our manufacturing and installation process is significantly different than the process used hundreds of years ago and the characteristics modern machinery and installation techniques impart create an entirely different window than the traditional building methods created when your building was originally constructed. Such a loss of historical elements is a permanent scar on your historical building.

Replacing original wood windows also often requires changing the window’s rough opening to install a window manufactured on national standards in to the non-standard opening of a building constructed during a time when there were no building standards – another mistake that permanently damages your building.

 

The Importance of Historic Wood Window Restoration

Historic Wood Window Restoration, Save Historic Wood Windows, Wood Windows vs. Replacement Windows

Just as we shouldn’t replace our historical art with modern replicas, we shouldn’t replace our historical wood windows with modern replacement windows.

Throwing out the artifacts from our built history that stand testament to how our buildings were constructed over the last several hundred years prevents future generations from a deep understanding of a piece of our history that’s just as important as all the other artifacts we work so hard to preserve.

Because once they are gone, they are gone for good.

[sws_toggle1 title=”Which Windows are Historically Significant?“]The National Park Service’s Preservation Brief #9: The Repair of Historic Wood Windows notes that windows should be considered significant to a building if they:

1) are original,

2) reflect the original design intent for the building,

3) reflect period or regional styles or building practices,

4) reflect changes to the building resulting from major periods or events, or

5) are examples of exceptional craftsmanship or design [/sws_toggle1]

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The National Park Service’s Standards and Guidelines for Rehabilitating Historical Windows recommend the following:

• Identify, Retain, and Preserve

• Protect and Maintain

• Repair • Accurate Restoration

• Sympathetic New Windows in Additions

• Preserving Decoration and Function

• Replacement In-Kind

• Compatible Materials

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The National Park Service’s Standards and Guidelines for Rehabilitating Historical Windows do NOT recommend the following:

• Removing Windows Important to Historical Character

• Changing Location or Size of Windows

• Inappropriate Designs, Materials, and Finishes

• Destroying Historical Materials

• Replacing Windows that Can be Repaired

• Failing to Maintain

• Replacing instead of Maintaining

• Inaccurate Historical Appearance

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How to Save Historic Wood Windows

Now that you know how important your historic wood windows, we want you to have the knowledge you need to save them.

Get your free copy of our recent report “Put Replacement Windows to Shame: 10 Tools to Make Your Historic Wood Windows Last for Generations”