One of the most important aesthetic features of the home interior is the installation of a cornice. Not only is it a simple way to beautify the junction between wall and ceiling, it can also tie in with the rest of your home’s interior design. Installing cornices isn’t particularly difficult, but a lot can still go wrong if the right procedures aren’t taken.

Installing cornices requires timing and patience, as well as a steady hand. In this article, we’re going to go through a very easy to follow three point process to make sure that your cornices are installed perfectly from the first time of asking. By following these steps, you’ll be a master at installing cornices in no time at all!

Step 1: Get the measurements right

There’s nothing worse than feeling good after you’ve installed the cornices, only to realise that you’re off by a millimeter. This is all about getting the measurements and cutting the cornice exactly spot on. Using a tape measure, size up how much cornice you will end up needing to install. Mark it clearly on the cornice by using pencil either at the top or the bottom of the cornice, as the curvature of the cornice can be misleading if the marking line is done there.

You will also need to judge the angles at the ends of your cornices after this, which will allow them to intersect with one another in the corners of the room. Internally facing walls will normally require an easy to remember 45° angle cut into the end. For irregular shaped rooms, or externally facing rooms, this gets a bit trickier. You can either measure the angle yourself and make the appropriate cuts using a saw, or buy a relatively affordable mitre box if you’re short on time.

Step 2: Installing the cornice in place correctly

Here comes the tricky part that scares many beginning DIY enthusiasts. The first step is to get the adhesive to installing the cornice, of which we have two types; liquid nails and the aptly named cornice cement. Liquid nails is simple and effective, however may not be reliable for heavy or long cornices. Cornice cement is purpose made to stick any cornice into place, however can be quite messy if not mixed right, and is hard to clean up as a result.

The choice is up to you, however we’d strongly recommend paying a little extra to get the cornice cement. Follow the instructions carefully, and apply the cement in a bead with a width of 1 – 1.5cm to both edges on the rear of the cornice. With the cement on, place the cornice where it needs to go whilst applying a firm but gentle force, allowing the cement to work. Add a little more cement to the edges so the cornice adheres to these as well, whilst doing the same.

Step 3: Cleaning up after installing your cornices

The cornices are in place! All that needs to be done now is to tidy up the area so that you can lay down some paint to tie it in with the rest of the room. If you’ve used liquid nails, the clean up will be minimal, although we recommend still using a plasterer’s tool in case there is any remaining adhesive. If you’ve used cornice cement, however, you’ll have to take extra care in scraping any remaining cement from the edges of the cornices installed.

Using a dedicated plasterer’s tool, very gently run it along the underside and topside of the cornice to remove any remaining cornice cement. You may have to do this a few times, depending on how much excess cement there is. If you come across any blotches, use the flat side of the tool to gently sculpt this cement into a flat surface. We’d also recommend using a slightly wet sponge and dabbing the cornice for a cleaner finish.

Stuck and need help installing cornices? We’re here to help

If you run into trouble installing cornices on your own, help is at hand. You can contact our team of plasterers in Melbourne at KONNSTRUCT on 0450 743 734 today for all general enquiries on getting your renovation project up and running. We’ll be more than happy to talk to you about your ideas, as well as giving you a no-obligation quote on getting your project done.