How to Ensure Proper Waterproofing When Installing New Windows

Installing new windows in your home can be an exciting task, and it is an upgrade that many homeowners opt to carry out themselves. However, for homeowners who are doing it for the first time, there is a crucial element that is often missed: waterproofing. Many homeowners forget about or underestimate the importance of proper waterproofing, leading to many long-term issues such as leaks and drafts, even with the most beautiful or high-performance windows. In this post, we therefore take a look at some useful tips to help you ensure proper waterproofing when installing new windows in your home.

Using Sloped Sills or Sill Pans

Sloped sills and sill pans are often your first line of defence against leaks. They work by directing any water that seeps behind the window away from the wall and out of the building, preventing it from pooling and causing damage. When it comes to choosing a sill pan, you have several options. You can use a pre-fabricated pan, metal flashing or even build your own using a flexible waterproof membrane. Regardless of what you choose, the key to ensuring its effectiveness is to ensure it’s properly sloped toward the exterior and sealed at the corners to create a continuous barrier.

Avoid Skipping Sealant

It can be tempting to skip the sealant, especially if the window you have seems to fit snugly in the opening you’ve prepared. However, relying solely on a tight fit is a mistake, and sealants are usually crucial for creating a barrier that fills up any small gaps and prevents moisture from sneaking in around the edges of your window.

Performing a Hose Test Before Finishing

Before covering the interior of the window with drywall or trim, you should also always perform a waterproofing test. Using a water hose, spray water around the edges of the window and check for leaks inside. This simple step can help you identify any potential problems with your window installation so that you can address them early on before they snowball into bigger issues. If any leaks are detected, you can also reseal or adjust the window before finishing it.

Using Good Quality Windows

Beyond installation, a part of waterproofing also boils down to the quality of your windows. Lower quality windows tend to be more susceptible to manufacturing imperfections or issues that may cause leaks even with proper installation. It is thus crucial to ensure that you use the best quality windows for your home if you want them to last.

Valley Windows is the number one manufacturer and supplier of custom windows and doors in Melbourne. We offer a wide selection of custom timber and aluminium windows for you to choose from, with diverse styles ranging from visually appealing sash windows and louvre windows to classic casement windows. Visit our showroom today or contact us to find out more about how we can help with all of your window and door needs!