With all of the excellent advice I’ve been given, I decided to join GBA today to show my appreciation and support.
In my opinion, the value I’ve gathered thus far exceeds the amount of the membership cost.
At any rate, many of you have seen my plans that I’m creating and now I’d like to discuss my window options. I have decided to utilize the attic space as a bonus room and tossed a couple of windows up there.
I have my eye on Intus windows but I’ll also price thermotech since they’re geographically nearer to me. I’m still sourcing a manufacturer for the doors.
The following table lists the dimensions for the windows all around:
Elevation Room Width Length Type
Intus West Office 98 48 Partial tilt/turn
Intus South Office 48 48 Fixed
Intus South Kitchen 46 42 Fixed
Intus South Kitchen 46 42 Tilt / turn
Intus South Dining 36 48 Fixed
Intus South Living 96 48 Partial tilt/turn
Intus East Living 48 48 Fixed
Intus East Closet 40 22 Fixed
Intus East Master bed 78 22 Tilt only
Intus North Master bath 36 22 Fixed
Intus North Guest bed 30 42 Tilt/turn
Intus East Attic 48 48 Tilt/turn
Intus West Attic 48 48 Tile/turn
If my math is correct, my southern exposed glazing amounts to 87 sq. ft. which is 4.88 % of the 1778 sq. ft. 1st floor living area.
The windows I have my eye on are the Eforte line. My goal is to keep as many of the windows fixed as much as possible to control cost and U value, but I’d also like to have enough operable windows to create a nice breeze on those beautiful days without having to rely on a screen door.
These windows exhibit the following properties:
FIXED: U=0.12, R=8.33
OPERABLE: U=0.13, R=7.7
SHGC can range from 0.25 to 0.62.
A few questions:
Do I have enough solar glazing on the southern elevation to produce a bit of heat gain? From the articles I read on this site it appears I’m in the ballpark.
The representative at Intus informed me to just go ahead and use the standard glass (I believe SHGC = .36) for ALL of the windows in the house to realize excellent U values. He also informed me that I won’t need to worry about overheating by doing this and I’ll save on cost. Is this feasable? Should I design a higher SHGC on the south side? East and west?
I’m looking for some guidance here. I’m not sure if I’d want to add any additional windows to the south side so maybe I would be better off with a little higher SHGC on that elevation?
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