How to Install a Pre-Formed Doorway Arch
More in Windows Walls and Doors
Step 1: Measure the Arch and Mark the Doorway
Pre-fabricated arches come in a set width, typically 48". A piece a plywood or a 2 x 4 may need to be added to adjust the size of your rough door opening to accomodate the arch. Measure the rise (height) of the arch and transfer that measurement to the side walls of the doorway.
Step 2: Set the Arch Into Place
Set one end of the arch at the wall mark and slide the other end into place, then nail the arch into the door frame.
Step 3: Add Reinforcement
To give the arch more strength, screw 2 x 4 blocks into the corners.
Step 4: Attach Drywall Over the Arch
Lay enough drywall over the arch to make up for the space where the old wall surface was taken out. In this demonstration, 3/4" had to be made up because of the old plaster, so we started with a 1/4" layer and then an additional 1/2" layer over that.
Step 5: Trim Around the Arch
Using the edge of the arch as a guide, trim the drywall along the underside of the arch with a rotary cutting tool.
Step 6: Cover the Underside With Drywall
Cover the underside of the arch with drywall. To prevent the drywall from breaking, spray the drywall piece with water and let it set for 10 minutes to make it more flexible. Using two separate pieces will also help. To attach the drywall, use self-tapping screws to go through the metal form. Use a rasp to finish the edges of the arch (Image 1).
Step 7: Attach the Flexible Corner Bead
Use spray adhesive to attach the flexible corner bead to the edges of the arch. Once this is done, you're ready to patch and paint.
Was this project helpful?
Advertisement
Find your DIY inspiration or just steal ideas from the best renovations and remodels done by the DIY Network pros.
COMMENT ON THIS PROJECT
Sign in
All fields are required.
Signing in
Please enter your email address and we will send your password
E-mail Address
Your password has been sent and should arrive in your mailbox very soon.
Not a member?
Sign up with DIY Network to share tips with other do-it-yourselfers and comment and ask questions on projects.
It's free and easy.
