How to Install Round Windows

May 14, 2020



How to Install Round Windows - Clera Windows + Doors

Round windows are certified conversation starters once guests or neighbours catch a glimpse of it. Its unique shape can perfectly frame idyllic outdoor views. It is a creative architectural feature that can bring a lot of practical benefits to your property. In this blog, we’ll outline how to install round windows and why most of the time, calling in professionals to do the job is the most cost-effective route for homeowners. Let’s dig right into it!

Where to Install Round Windows At Home

Round windows can look fabulous anywhere you install them. They are particularly useful in areas where there’s limited wall space. They can make any room around your home bright and inviting because they bring in plenty of natural light. You’ll be surprised to see how installing round windows can make a difference in your home. They are popularly put in gables, which is the triangular space between the roof. Select grand round windows to create a dramatic focal point in your living room, dining, or bedroom. It’s going to elevate the room’s aesthetic if it overlooks an equally stunning scene of flowers or trees nearby. On the other hand, small round windows can add a whimsical touch and nautical charm when installed in bathrooms, stairwells, and little reading nooks. Round windows are spectacular design chameleons, tastefully suiting any architectural motif. They can lend an eclectic charm to contemporary homes and give a timeless, almost fairytale quality to period properties.

DIY Round Window Installation

As with any window installation, there are several steps involved and a handful of power tools necessary to install your round windows so that it doesn’t look haphazardly done. Below is an overview of how to install round windows.

Create a Template

Trace the outline of your round window onto a piece of cardboard. Cut out the template using a sharp utility knife. Its primary purpose is to ensure that the window casing fits.

Build Supports

Make support materials to hold your window in place. Cut 2 by 4 wood to make a top header and bottom sill that you’ll have to nail. It would be best if you also built corner supports for the circular shape.

Mark the Opening

Position the cardboard template on the wall where you plan to install your round windows. Secure it with tape so it won’t move. Draw its outline using a pencil to identify the opening.

Cut the Opening

Create an opening hole for your round window using a reciprocating saw. Make a clean cut on the drawn outline so the opening will be slightly larger than the actual size of your cardboard template.


Apply a bead of silicone caulking on the interior and exterior area of where you’re going to place your casing. Work your way from the bottom part and move upwards. Do it before inserting the round windows into the access hole. This step is crucial because it makes your home energy efficient, keeping it warm and comfortable all year round. Aside from that, it guarantees that splashes of rain won’t get into your home, and there’d be no draught that let the freezing air in during winter.

Insert and Install

Try if the round window fits the opening. Double-check the jamb. Drill with nails to fix it into position. Make a mark on the new siding using a compass. Make sure your round windows are installed in a level position. Correct with shims if necessary by pounding them into the window casing. Next, hammer 8d nails into the top and bottom parts. Check to see if the newly installed round windows are permanently fixed into the wall and not moving. Trim the visible ends of the shims once you’re done installing the round windows.

Caulk Again

To be safe, apply another bead of silicone caulking to make sure that your round window is fully weatherproofed. Cover the space between the window casing.

The Benefits of Calling Professional Window Installers

Without the proper tools and knowledge in carpentry and masonry, pulling off a DIY round window installation job for your home can be complicated. But when you call in an expert like Clera Windows + Doors, you get a hassle-free round window installation service done safely, quickly, and efficiently. Here are several benefits of hiring a professional for your round windows installation.

  • Save Time and Energy
  • If you have no prior experience, it can come with several exhausting hours of trial and error. Valuable materials can be wasted in the process, too. A professional window installer can get it done in no time.
  • Longlasting Quality Assurance
  • Proper window installation ensures that products will last longer and perform better. It’s something that should also never be compromised because it can affect your home’s energy efficiency, which can impact your utility charges and your quality of life as well. Your family’s health can be sacrificed with poorly installed windows.
  • High-Quality Materials and Equipment

There's no need to worry about shopping for materials or power tools to use. Clera Windows + Doors is a one-stop-shop. We’ll take care of everything you need from the manufacturing of specialty shaped windows up to installation and maintenance. Our installation team is fully Window Wise trained, certified, and bonded. All of our installers are local, meaning swift service if your windows or doors ever need further maintenance. Get your elegant round windows from us to get a lifetime warranty, too!To request a free home estimate, contact us today!

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