4. uPVC windows are also very secure. They are less likely to be broken into than windows made from other materials. 5. They are one of the best soundproof and fire-resistance materials available in the market; this will not only help to keep the environment quiet but also make you less worried during a fire in the house as it won’t let the fire spread. 6. They will provide you with a plethora of customization for your windows and doors; you can choose the style, shape, and color all as per your house's demand. 7. They are easy to maintain and clean windows once you have installed them. What are the disadvantages of uPVC Windows? 1. uPVC windows may not be the right choice for everyone. Some people find them to be less attractive than wood or aluminium windows. 2. They can also be more expensive than other window materials. Conclusion: uPVC windows and doors offer many benefits, including low maintenance, security and double glazed windows energy efficient windows. However, they may not be the right choice for everyone. Some people find them to be less attractive than wood or aluminium windows. They can also be more expensive than other window materials.