In a previous post, we mentioned a mindset that basically says that if you install any new Savannah replacement windows, you are better off. We used frame insulation as a prime example of how wrong this assumption can be. Statistics clearly show, from a R value standpoint, the wood window that you are replacing is more energy efficient than a non-insulated Savannah vinyl replacement window. Today, we’ll look at another area where this anything is better than what I have mentality is not only incorrect, but can truly cost you.
It is almost natural to assume that if you buy any new Savannah replacement window, insure that is installed correctly, and the gap around the exterior of the window is caulked properly, you’ll have an airtight window. Unfortunately this is where one of the dirtiest little secrets when it comes to manufacturing a vinyl replacement window comes in; that is the air leakage rate. There are many parts of the manufacturing process that can affect how well your new home windows handle air, and this is a major area where a manufacturer can save money.
So, when a Savannah replacement window dealer comes to show you their product, how do you know what constitutes a truly efficient window from an air leakage standpoint? Interestingly, a staple of most window salesperson’s presentation repertoire is showing you how their sashes interlock where they meet. They often will place a dollar bill in before they close the two parts together and ask you to try to pull it out and when you can’t they tell you that proves how airtight their window is. Makes some sense, right?