STC of old windows

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Anlina
Posts: 29
Joined: Thu Jan 17, 2019 3:40 am

STC of old windows

#1 Post by Anlina »

Can anyone estimate the STC of old wood casement single-pane windows?
Thanks.

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toddinmn
Posts: 1067
Joined: Tue Jan 06, 2009 9:02 pm

Re: STC of old windows

#2 Post by toddinmn »

18-20

uncle eddie
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Joined: Tue Sep 18, 2012 7:52 pm

Re: STC of old windows

#3 Post by uncle eddie »

a storm window will make a big difference on that

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Windows on Washington
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Location: DC Metropolitan Area-Maryland/Virginia/DC

Re: STC of old windows

#4 Post by Windows on Washington »

Depending on the thickness of the glass...might even be a shade lower than the 18. That said, it isn't good.

Anlina
Posts: 29
Joined: Thu Jan 17, 2019 3:40 am

Re: STC of old windows

#5 Post by Anlina »

Thank you! I appreciate your responses.

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toddinmn
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Joined: Tue Jan 06, 2009 9:02 pm

Re: STC of old windows

#6 Post by toddinmn »

The numbers would be even lower if the glazing or weatherstripping is not 100%

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