How to Repair a upvc window repair Window Frame Upvc Window Repairs windows last for decades. However, over time, they can be damaged. This could affect the performance of the window. Fortunately, a lot of these issues can be addressed. This will save you money on new windows and enhance the quality of your home. The most common problems are: Cracks uPVC is a popular frame material because it's durable and energy efficient, however it can suffer from cracking over time. A damaged window is more than an eye-sore. It can allow cold air into your home and can increase your electric bill due to the fact that heat escapes through the crack. However, it is possible to repair the uPVC window frame without spending too much money, and it can be done fairly quickly. Identifying the cause of a crack is the first step. It could be caused by a sudden shift in pressure, like when you open or close the window. This type of crack is known as"pressure crack" and is typically found near the edges of the double glazed window repairs.