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typical energy savings in a retrofit applicaiton? Post New Topic | Post Reply
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Corey Degetaire
Posted: Apr 15, 2009 09:59 AM
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typical energy savings in a retrofit applicaiton?
What is a average percentage saved on energy bills when the roofdeck of an existing home is sprayed and existing insulation is removed from the ceiling floor, creating a nonvented attic system?
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SPFer
Posted: Apr 15, 2009 04:06 PM
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My personal experience is around 30-35% |
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Circle-D
Posted: Apr 16, 2009 07:50 AM
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I did a ceiling in a log cabin where the customer removed the filterglass and I sprayed 3" of CC. He distributed the filterglass around the attic again. We maintained the existing ventilation and he is claiming savings of 45 to 50%. This amounted to about a 3 year payback. |
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Posted: Apr 18, 2009 10:38 AM
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i removed double cross hatched r-19 batts (thats r-38 for those of you from loma linda)from a ~1400 sq ft flat lid,,, i applied 10-12" gw OC foam down to the lid,, i heat with nat gas,,,domestic h2o as well,, in feb of 2008 my daily nat gas cost was $5.99 in feb of 2009 my daily nat gas cost was $3.01 that is a 49% reduction in cost the 2009 billing period was 2 days longer,,, the 2009 average temp was 6 degrees colder,, now i know the nat gas price was more in 09 as well but i best be gettin that figure too eh?? now this 2x4 sidewall filter glass home is still infiltrating/exfiltrating well thru the sidewalls,,and i can only imagine what will happen when we do the sidewalls as well,,, hope this helps 'dude |
