[Greenbuilding] Green Retrofit Window Options

[Clarke Olsen]

    The drawbacks to the original double-hung windows are: leaky  
sash-weight channels, leaky fit,
    and single glass. The less then perfect answer is storm windows.
    Clarke

On Nov 27, 2006, at 7:57 PM, <dantonioli at earthlink.net> wrote:
> A greener option I'm looking into is to use reclaimed and/or certified  
> wood
> to recreate the sashes. I'll fish out the counter-weight, replace the
> trolley, and tie the new sash to the weight with new rope. It's more  
> time
> consuming, and a bit more expensive, but it restores the original look  
> and
> is greener because it doesn't use pvc liner and Marvin's choice of  
> certified
> wood.
>
> But it also means that in order to fit the sashes into their original  
> jam
> you have to use single-pane and/or laminated glass. I've been  
> researching
> the latter and am trying to get information on STC and U-value ratings.
>
> Does anyone know if laminated glass has "insulation" value and/or an R  
> or U
> value attached to it?
>
> Also, lami is often used for sound abatement, which is useful for me  
> because
> I live next to a freeway. But would a single pane of lami be as  
> sound-proof
> as a double pane unit? Most of the ratings I've seen are for  
> double-pane
> windows where the outside pane is lami. These tend to be very expensive
> windows, but are often used for sound abatement next to airports and  
> other
> high noise areas.
>
> Replacing the aluminum windows with wood sash lami is a big  
> improvement for
> both sound and thermal, but I was hoping to get a bit more specific in  
> terms
> of how much better.
>
>
> Dan Antonioli
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