The Efficient Windows Collaborative

Wood

Wood Double The traditional window frame material is wood, because of its availability and ease of milling into the complex shapes required to make windows. Wood is favored in many residential applications because of its appearance and traditional place in house design. From a thermal point of view, wood-framed windows perform well with frame U-factors in the range of 0.3 to 0.5 Btu/hr-sq. ft-°F. Wood is not intrinsically the most durable window frame material, because of its susceptibility to rot, but well-built and well-maintained wood windows can have a very long life. Paint protects the exterior surface and allows an easy change in color schemes.

Whole Window Properties - Wood


Glazing	Single-glazed Clear	Single-glazed with Bronze/Gray Tint	Double-glazed Clear	Double-glazed with Bronze/Gray Tint	Double-glazed with High Performance Tint
U-Factor	.84	.84	.49	.49	.49
SHGC	.64	.54	.56	.47	.39
VT	.65	.49	.59	.44	.50

Glazing	Double-glazed with High-Solar-Gain Low-E, Argon/Krypton Gas	Double-glazed with Moderate-Solar-Gain Low-E, Argon/Krypton Gas	Double-glazed with Low-Solar-Gain Low-E, Argon/Krypton Gas	Triple-glazed with High-Solar-Gain Low-E, Argon/Krypton Gas	Triple-glazed with Low-Solar-Gain Low-E, Argon/Krypton Gas
U-Factor	.37	.35	.34	.29	.28
SHGC	.53	.44	.30	.38	.25
VT	.54	.56	.51	.47	.40
Note: The data presented here is an average of similar (but not identical) products from several manufacturers. Specific products will have performance properties slightly higher or lower. Users are encouraged to check with specific manufacturers for exact performance properties.

Skylight Properties - Wood


Glazing	Single-glazed Clear	Single-glazed with Bronze/Gray Tint	Double-glazed Clear	Double-glazed with Bronze/Gray Tint	Double-glazed with High Performance Tint
U-Factor
SHGC
VT

Glazing	Double-glazed with High-Solar-Gain Low-E, Argon/Krypton Gas	Double-glazed with Moderate-Solar-Gain Low-E, Argon/Krypton Gas	Double-glazed with Low-Solar-Gain Low-E, Argon/Krypton Gas	Triple-glazed with High-Solar-Gain Low-E, Argon/Krypton Gas	Triple-glazed with Low-Solar-Gain Low-E, Argon/Krypton Gas
U-Factor			.53
SHGC			.40
VT			.55
Note: The data presented here is an average of similar (but not identical) products from several manufacturers. Specific products will have performance properties slightly higher or lower. Users are encouraged to check with specific manufacturers for exact performance properties.