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PUCA - Réemploi et reconfiguration thermique des fenêtres en fin de viePARTIE 1amount of energy to make, deliver and install new windows and transport the old windows to thelandfill. In addition, new windows also have many more constituent parts that are likely to failresulting in operation that deteriorates with age. It also becomes increasingly difficult to findreplacement parts as the windows age, but glass, glazing, and sash cord; the basic necessities forrehabilitating historic wooden windows will always be available. Finally, the old-growth heartwoodthat historic windows were manufactured with has a far greater lasting capacity than new secondgrowth timber due to a number of reasons including density and resin content.As mentioned earlier, there are a number of options available for increasing energy efficiency, andwhen applied simultaneously, these methods can increase the overall efficiency of historic woodenwindows dramatically. For example, much of the heat loss and air leakage involving historic woodenwindows results from the hollow, un-insulated space created for the window weights on either sideof the window sashes. However, replacing the window weights with spring-loaded window tapebalances will eliminate the need for the weights thus allowing for the installation of insulatingmaterial in the now vacant sash boxes.It is also possible to rout grooves in the meeting rails of the sashes and install RST Corporation’sWS87 offset plastic leaf seal as well as routing the lower sash rail and installing a piece of WS10plastic tube seal where the sash meets the sill. Grooves can also be routed on the outer edges of thesash stiles and WS84 plastic seal installed there as well.All of these materials and methods are recommended as NPS “best practices,” and when installedproperly are unobtrusive. Other companies make similar products.Although storm windows can result in condensation and potential rot if used incorrectly, wheninstalled properly and with an eye toward taste, they can be an attractive addition to the building. Afine example of this approach was employed by window specialists from Allegheny Restoration andcan be seen at the Monroe County, West Virginia courthouse.If storm windows are not desirable, something as simple as insulated window treatments with nomore than a quarter inch gap at the sides of the window opening can reduce heat loss by as much as27%.If the wooden windows are retained, they should be removed, prepared, primed, painted, and thenre-glazed. Old caulking should be removed from around the exterior window frames and sills andthen re-caulked. This will stop a great deal of cold air infiltration. After the sashes are re-roped andre-installed, two sash locks set a distance apart can then be used to keep the windows tightly shut.The following paragraph was taken from the conclusion of National Park Service Preservation Brief #9and reflects the opinion of Technical Preservation Services who recommend the retention and repairof original windows whenever possible. “We believe that the repair and weatherization of existingwooden windows is more practical than most people realize, and that many windows areunfortunately replaced because of a lack of awareness of techniques for evaluation, repair, andweatherization. Wooden windows which are repaired and properly maintained will have greatlyextended service lives while contributing to the historic character of the building. Thus, an importantelement of a building's significance will have been preserved for the future.” As a preservationhistorian and past contractor I agree.[1.58]Juin 2012Les Bâtisseurs d’Emmaüs160
PUCA - Réemploi et reconfiguration thermique des fenêtres en fin de viePARTIE 14.10 – THERMAL REHABILITATION OF ELEVATION WITH REPLACEMENT OF WINDOW AND DOORWAYAPERTURE FILLINGS AT THE POLYCLINIC OF S TOLBCY CENTRAL REGIONAL HOSPITAL (2009-2010)(Russie)[1.59]The information in this article was taken from:“Window Know-How: A Guide to Going Green,” originally published in Preservation magazineMarch/April 2009, National Park Service best practices Preservation Brief #9 entitled “The Repair ofHistoric Wooden Windows,”“New Life for Old Double-Hung Windows,” published in the November 6, 2007 edition of FineHomebuilding magazine, and information provided during the March 30, 2009 meeting of theCollingswood, New Jersey Preservation Commission.Lynn StasickState-Wide Field Representative,Preservation Alliance of West Virginia4.11 – BOSTON’S LEADING WINDOW RESTORATION COMPANYBoston Bi Glass has set the standard for the best quality window restoration and window renovationcompany. Windows are an architectural focal point of any property, restoring the functionality andappearance of those windows is crucial. The innovative patented process known as Bi Glass® is aproven system. Bi Glass has been installed in many homes, churches, colleges, town and city halls,libraries and historic Buildings throughout the North East.Do you see the light? Maybe you are looking at paint-shut windows, broken ropes, cracked glass orrotted wood. Our restoration and repair services will leave you with operating, easy to lift, weathertight,energy efficient windows for years to come.Bi Glass is a patented restoration window process that converts single pane windows to double panewindows, offering various customized solutions. Windows in your home are meant to be functionaland will last virtually forever if properly cared for and maintained. Restoration techniques aredetailed and carried out effectively leaving you with architecturally accurate and efficient windows.Boston Bi Glass trained technicians are expert restoration specialist, crafting reliable windows withyears of experience. Original wood windows were crafted with a much denser wood that cannot beduplicated today. If your windows need repair or need to be restored we can help. Operating in thegreater Boston MA area, we understand the unique history and architectural designs of NewEngland.Benefits of Bi Glass:Juin 2012Les Bâtisseurs d’Emmaüs161
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