Wonderful Composite WindowsWindows are an important investment, in the long run. They add value to your home, save energy, reduce costs and improve the indoor comfort. To help you choose new Denver replacement windows for your home, here is a closer look at two popular materials they are made from: composite and vinyl (PVC).But first, let us understand the terminology.Wood polymer composite WPC is also known as composite wood or plasticized wood. It was invented in Japan, in 1976, and its composition includes wood flour (over 50%) and recycled plastics (high density polyethylene granules). This mixture is, stabilized against UV rays, mold and insects.PVCVinyl polychloride, better known as PVC, was discovered in 1912 and is currently the second most widely used type of plastic. It is resistant to fire, water, ultraviolet rays, acidic chemicals and has countless of applications in various industries and activity sectors. When it comes to choosing between composite and vinyl windows, both materials have advantages and disadvantages. Ultimately, the choice will depend on your tastes and the budget you are willing to spend.Although PVC manufacturers are improving the technology every day, trying to mimic the look of wood, nothing looks and feels like wood; composite windows are also a better choice in terms of sustainability. On the other hand, vinyl requires significantly less maintenance, being also more affordable.  Both wood and PVC windows can offer high levels of energy efficiency, if you choose quality products.