Concentration of CO2 in the Atmosphere

OpenSash: Retrofitting Existing Windows for the Many Since 2010

: Glazing a window at the Vermont College of Fine Arts in 2014. Photo: Jeb Wallace-Brodeur.

Christopher Pratt

I began repairing windows in Portland Oregon in 2007. It was good work, but climate change was steering people toward energy efficient replacement windows that didn’t require storm windows. I was about to […]

Window Dressers Build Events in Vermont

WindowDressers Insulating Window Inserts are built at Community Workshops across Maine and Vermont. Typically, a rotating crew of 10-12 volunteers per half-day shift come together to assemble the inserts over several days. No special skills are necessary and every simple job is taught on-site by our experienced volunteers. Below is the schedule for Vermont locations:


Deep Energy Retrofit:

Windows in Double Wall Construction

By Michael Goetinck

There is a lot of information about window performance and how it can affect the R-value of the wall assembly, but it boils down to a few things:

As soon as you add windows to a wall assembly the performance normally goes down. The more windows you […]

Energy-Efficient Windows, part 1

Energy-efficient windows provide space heating and lighting to this sunny kitchen.

The windows in your house let in light and air if they’re operable, but they can also be weak spots in your home’s thermal envelope. When replacing windows, purchase the most energy-efficient windows you can afford, because they will pay for themselves over their […]

Weatherizing Windows … when Net Zero is not an Option

By Bob Walker, Sustainable Energy Resource Group

Roy Prochorchik installs inside storm window

Replacing windows might well be on the list of to-do’s for folks doing a ‘deep energy retrofit,’ where you are trying to make very deep savings at much higher costs with much longer paybacks. If your goals are to reach […]