Vinyl Windows: Pros, Cons, and What to Know Before Buying

Vinyl windows dominate the residential market. According to industry data, approximately 70% of replacement windows sold in the U.S. are vinyl. Here's why—and what to watch out for.

What Vinyl Windows Are

According to the AAMA (American Architectural Manufacturers Association), vinyl windows are made from polyvinyl chloride (PVC)—the same material used in plumbing pipes. The frames are extruded (formed) with hollow chambers that provide insulation.

Advantages

According to the U.S. Department of Energy and AAMA:

Cost: Most affordable frame material—typically 20-30% less than wood or fiberglass

Energy efficiency: Multi-chamber construction provides good insulation. According to NFRC, quality vinyl frames contribute minimal thermal bridging.

Maintenance: No painting or staining required. Clean with soap and water.

Moisture resistance: Won't rot, warp, or corrode from moisture exposure

Color options: Many colors available (though limited compared to painted wood)

Limitations

According to AAMA and industry research:

Appearance: Can look less refined than wood. May not suit historic or high-end homes.

Color limitations: Can't be repainted if you want to change colors later

Expansion/contraction: Vinyl expands and contracts more than other materials with temperature changes. Quality windows engineer this in; cheap ones don't.

Quality variance: Huge quality range in the market. Thin-walled vinyl performs poorly.

Longevity: Typical lifespan 20-30 years vs. 30-40+ for fiberglass

What to Look For

According to AAMA certification standards:

• **Multi-chamber construction:** More chambers = better insulation
• **Wall thickness:** Quality vinyl has 0.070"+ wall thickness
• **Fusion-welded corners:** Stronger than mechanical fastening
• **Heat-stabilized compound:** Resists UV degradation
• **AAMA certification:** Performance tested and verified

Best For

According to DOE, vinyl windows excel for:

• Budget-conscious projects
• Moderate climate exposure
• Standard residential applications
• Situations where low maintenance matters

The Bottom Line

For most Idaho homeowners, quality vinyl windows offer excellent value. The key word is "quality"—cheap vinyl windows with thin walls and poor construction won't perform well. Specify AAMA-certified windows from reputable manufacturers.

*For all frame materials compared, see: [Window Frame Materials](/guides/window-frame-materials)*