请教一下，买新的Single House, insulation有必要upgrade吗?谢谢。

[stable]

如题。

 

[Timothy's]

no, new standard already high enough. You wouldn't get penny for that upgrade.

 

[苦逼热狗]

Timothy's you might want to ask LZ which builder is he with. If the house is already Energy Star Certified, LZ probably can save up some money from it.

 

[Timothy's]

From resell point of view , a house with energy upgrade wouldn't sell anything more than a similar house next door without. for me 1997 building code already good enough, many things is a upgrade in 2000 is included in 2006 code.


There is a big different from house built before 60s and house built after 90s. The new house wall already well insulated. Adding any more insulation only change a little. You may gain more efficient by changing the design of the house, like reduce the windows .

 

[copper]

You may need to upgrade the insulation of roof

如题。

Most builders are using R20, some use R40, you may need to upgrade to R50 to keep your home warm.

 

[youdianfan]

our energy-star new home has R50 in the attic, R25 for exterior wall, R20 for basement wall, R32 for garage ceiling. They all are the standard from the builder. Are they good enough?

 

[stable]

多谢大家的回复。

 

[Songspec]

保温标准，按０６规范，attic -> R40, Ext. wall ->R20, Ext. foundation wall -> R12.

于９７规范相比，attic的保温要求从Ｒ３２提高了，墙的保温标准没变。

房子的保温是一个系统，单纯增加某一项，效果有限。