The Efficient Windows Collaborative

Vinyl

Vinyl Double Plastics are relative newcomers as window frame materials in North America. Vinyl, also known as polyvinyl chloride (PVC), is a very versatile plastic with good insulating value. Vinyl window frames do not require painting and have good moisture resistance. Because the color goes all the way through, there is no finish coat that can be damaged or deteriorate over time -- the surface is therefore maintenance-free. Some vinyl window manufacturers are now offering surface treatments like laminates (wood veneer, paintable/stainable, maintenance free) and coatings. These products increase color selection and surface appearance options. Recent advances have improved dimensional stability and resistance to degradation from sunlight and temperature extremes.

In terms of thermal performance, vinyl frames are comparable with wood, while there are minor differences, depending on the frame construction. Small hollow chambers within the frame reduces convection exchange, as does adding an insulating material.

Whole Window Properties - Vinyl


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.