Crown Molding Ideas for a Professional Installation

Get: Crown Molding Ideas
Read: Crown Molding Installation: A Step by Step Guide.
Learn more about How to Install Crown Molding.

Using adhesive will prevent future problems.

Put Adhesive on Crown Molding It is important to put an adhesive (Loctite's Power Grab, PL Premium, etc.) on both edges of the molding (ceiling and wall) and on the seam between each piece. This helps to hold the crown molding up during installation and, more importantly, will prevent the crown molding from ever separating. Changes in temperature from season to season will cause your walls to expand and contract and if you don't put adhesive between the seams you will begin to see gaps between each piece of molding. Apply a bead of adhesive on the molding, put it up in place and use a finish nail gun to affix it to the wall, and then wipe off any excess adhesive that might come out.
Adhesive between Crown Molding Wipe off Adhesive

Mark your wall before installing the crown molding.

Mark Crown Moulding Prior to installing your crown molding it is important to go around the room and put a chalk line or a pencil mark along the wall where the bottom of the molding will touch. This distance, measured from the ceiling down on the wall is what we consider the height of the molding and we include that figure on each of the detailed description in the Crown Molding department.

If you do not have a mark on the wall as a guide, you will likely install the molding slightly higher or lower as you go along and it will look wavy instead of straight.

Create clean seams on walls with multiple pieces of crown molding.

Cut Crown Molding EdgeWhen joining 2 pieces of molding on a straight portion of wall you can either do a butt joint or a mitered joint. With wooden crown molding there tends to be more variation in thickness and inconsistencies so it is preferable to do a mitered joint. Polyurethane crown molding is typically uniform in thickness so you can use a butt joint which is simpler to do and will be almost impossible to see if done correctly.

With a butt joint you are simply bringing the two pieces of molding together with a 0 degree angle. To create the joint, on the first piece remove 1/8" off of the molding with your miter saw to create a clean end. Do the same with the second piece, but if it will be going into a corner leave the length of the crown molding about 1/16" longer than needed so it will apply pressure into the joint. Make sure you use adhesive between the joint to prevent it from ever separating.

The picture below is before patching the holes and painting the molding. Once painted you would have to srain your eyes to ever find this seam. Crown Moulding Seam

Crown Moulding Idea

Remove the back tip of the crown molding for inside corners.

Whenever you are installing at an inside corner it is good to trip off the back yellow portion of the crown molding after you have made your miter cut. Often in inside corners you will find that where the wall meets there is excess spackling or other material. By removing the back tip it allows the molding to sit flat against the wall. This is especially important if you are installing at an inside 135 degree corner that is rounded -- the molding won't fit unless the back portion is removed.

The polyurethane crown molding is easy to cut, so you can use any knife or coping saw to remove the back tip. It only takes a few seconds and it will help the molding fit nicely into your inside corner.

When nailing, shoot the brad into a concave part of the molding.

If possible, when you are installing crown molding it is best to shot the nails into a concave part of the molding (dips toward the corner of the ceiling/wall). If you shoot into the convex part of the molding (parts that curve into the room) it is more difficult to fill the holes when you do your finish work.

How to Cut Tip off Caulk

Caulking works miracles!

Walls are often not perfectly straight but fortunately you can hide all of those flaws (and also any small mistakes you make during your install) with a little bit of caulk. For any seams, including the seam between the crown molding and your walls, you can use caulk to fill in the gaps. If you look in the pictures below you can see what a difference the caulking will make.

Cut the tip of the caulk at an angle.

Cut the tip of the caulking tube at about a 30-45 degree angle so you can easily apply the caulking along the lines.

Caulk the lines, spackle the holes.

Caulking will shrink slightly when it dries, so if you use caulking to cover the holes you will see little dimples when the caulking dries. Use a lightweight spackling to effectively hide any nail holes.
Before Caulking Crown Molding After Caulking Crown Moulding

Should you paint your molding before or after you install?

It depends. There are advantages and disadvantages of painting before or after so it is best to pick the one that makes the most sense for your project. Painting the molding in advance goes very quickly but after you install the molding there will be areas like the nail holes and corners where you will need to go back and touch up paint. If you wait until after you install to do the painting then you will have a lot of trips up and down a ladder and you will have to tape of your ceiling and wall. I have done it both ways, but in this particular installation I painted it after it was installed.

Painting Crown Molding

Our Crown Molding department is full of pictures of customer projects. You can go to our crown molding department and click on the customer gallery logo or you can browse through the individual crown moldings to see pictures. View Crown Molding Pictures.

Read: Crown Molding Installation: A Step by Step Guide.
Learn more about How to Install Crown Molding.

Featured Molding Categories
Crown MoldingDoor and Window TrimBaseboards Ceiling MedallionsCeiling Design
Crown MoldingDoor / Window Trim BaseboardsCeiling MedallionsCeiling Relief

More Home & Garden Departments
Decorative Columns Wall FountainsGarden WaterfallsMarble StatuesMassage Chairs
Decorative ColumnsWall FountainsGarden WaterfallsMarble StatuesMassage Chairs