How to Create a Square Arched Doorway

Ever found yourself admiring the grandeur of an arched doorway, only to wish you could incorporate one into your own home? While it might seem like a daunting task, creating an arched doorway isn't as complex as it appears. With the right tools, materials, and a bit of patience, you can transform a square doorway into a stunning architectural feature. Let's delve into the step-by-step process of how to make an arched doorway square.

Before we dive into the process, it's crucial to understand that this project requires some basic carpentry skills and the right tools. You'll need a circular saw, a jigsaw, a tape measure, a pencil, a level, a ladder, and safety gear, including goggles and gloves. Additionally, you'll need materials such as 2x4 lumber, 1/2" plywood, drywall screws, and joint compound.

Planning and Measurement

Planning is the first step in any successful project. Measure the width and height of your current doorway. This will help you determine the size of your arch and the amount of material you'll need. Standard doorway widths range from 32" to 36", and heights can vary, but typically range from 80" to 96".

Next, decide on the style of your arch. Common styles include elliptical, gothic, and segmental. For this guide, we'll focus on a segmental arch, which is a semicircular shape that's easy to construct.

Creating the Arch Blueprint

Using your measurements, draw a segmental arch on a large piece of cardboard or foam board. The width of the arch should match your doorway's width, and the height should be half the height of your doorway. This will serve as your template for cutting the arch into the 2x4 lumber.

To create the template, draw a line across the board that represents the width of your arch. Then, mark the midpoint of this line. Draw a half-circle from this midpoint to the edges of the board, using your doorway's height as the radius. Cut out this template using scissors or a utility knife.

Cutting the Arch

Using your template, trace the arch shape onto two pieces of 2x4 lumber. These will serve as the top of your doorway frame. Cut along the lines using a circular saw, ensuring you're cutting on a flat, stable surface.

Test the fit of your arches by placing them on top of your doorway frame. They should fit snugly, with the flat edge resting on the top of the frame and the arch curving upwards. If necessary, make adjustments until the arches fit perfectly.

Installing the Arch

With your arches cut and ready, it's time to install them. This process involves removing the existing doorway trim, installing the arches, and then reinstalling the trim.

Begin by removing the trim around your doorway. Use a pry bar to carefully lift the trim away from the wall, taking care not to damage it. Set the trim aside for reinstallation later.

Installing the Arch Supports

Before installing the arches, you'll need to create supports for them. Cut two pieces of 2x4 lumber to the width of your doorway, minus 1/2". These will serve as the supports for your arches.

Position the supports on either side of the doorway, with the flat edge against the wall and the top edge level with the top of your doorway frame. Attach them to the wall using drywall screws, ensuring they're level and plumb.

Installing the Arches

With the supports in place, it's time to install the arches. Position the arches on top of the supports, with the flat edge resting on the supports and the arch curving upwards. Ensure they're level and centered.

Attach the arches to the supports using drywall screws. Drive the screws through the supports and into the arches, ensuring they're secure. You may need to use a ladder to reach the top of the arches.

Finishing Touches

With the arches installed, it's time to finish the project. This involves reinstalling the doorway trim, filling any gaps, and painting or staining the arches.

Reinstall the doorway trim by placing it back on the wall and using finishing nails to attach it. If necessary, use wood filler to fill any gaps between the trim and the wall, then sand and paint or stain the trim to match the rest of your home.

Filling Gaps

If there are any gaps between the arches and the wall, fill them with joint compound. Use a putty knife to apply the compound, then allow it to dry. Sand the dried compound smooth, then paint or stain it to match the arches.

Finally, paint or stain the arches to match the rest of your home. This will give your doorway a cohesive, finished look.

And there you have it - a stunning arched doorway where once there was a square one. This project requires some effort, but the result is well worth it. Not only does an arched doorway add visual interest to your home, but it also increases its value. So go ahead, transform your space, and enjoy the fruits of your labor.