How to Spot Quality Vinyl Replacement Windows

Vinyl replacement windows in San Marcos, CA are great, all-weather products that work well in many climates. They are especially good in California because they hold up against the heat, cold, and moisture. But not all vinyl windows are created equal and you may end up with some sub-par windows if you don’t know what to look for. Here are a few ways you can spot higher quality vinyl windows:

Quality Materials

The quality of all window frames starts with the material. Vinyl windows are made from polyvinyl chloride (PVC). Manufacturers use special additives to strengthen the material, improve insulation, and make it UV resistant. A few ingredients in the polymer you want to look for include organic tin and titanium dioxide. These elements make the frame stronger and help to prevent yellowing.


Most window contractors will have a cross-section of their windows so you can see what the inside of the frame looks like. When examining a frame cross-section the first thing you want to check is the thickness of the material. Thicker material means stronger frames and better insulation. It also means the frames can support more weight and you can get larger windows.

Multiple Chambers

Then next thing you want to check when looking at the cross-section is the number of chambers inside. Frames should have multiple chambers of varying sizes. This will improve energy efficiency as well as the support and strength of the frame. The more chambers there are the higher quality the vinyl windows.

Welded Corners

The corners of vinyl windows can also tell you a lot about the quality. Manufacturers assemble vinyl windows in two ways—screws and brackets or fusion welding. With screws and brackets, there is always a risk of seals falling apart. That is why, when looking for quality products you want to find vinyl windows that have welded corners. This bonds the material so there is a chemical bond that creates an unbreakable joint.

High Energy Ratings

Another way to compare products are energy ratings. Each window has a label from the National Fenestration Rating Council (NFRC). They test the products to measure energy performance. When looking for energy efficient products you want to pay attention to lower values on the U-factor, Solar Heat Gain Coefficient (SHGC), and the Air Leakage rating.


You also want a window that will complement the style of your home. While vinyl usually comes in limited color options there is enough variety you are sure to find a color that works well with the interior and exterior of your home. Vinyl windows also come in almost any window style.

When it comes to finding quality vinyl windows the price does not always indicate the quality. You have to pay attention to these areas to make sure you are getting a top of the line product. For more information contact Pelican Replacement Windows. With over 35 years of experience, we can offer the highest level of customer service. Contact us at (760) 598-6422 for more information about replacement windows in San Marcos, CA. Or visit our showroom at 2210 La Mirada Dr., Vista, CA 92081.

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