Print/DownloadProduct Spec Sheet
CM-1157 Crown Molding is a plain, 3-7/8" breadth crown molding typically used in rooms with ceiling heights of 8'.
uDecor crown molding is manufactured with a dense architectural polyurethane compound (not Styrofoam). Polyurethane is durable and 100% waterproof. The material can be sanded to shape just like wood.
A major advantage of polyurethane is that it is safe to install in rooms with the presence of moisture like bathrooms and kitchens. This product will not encourage the growth of mold or mildew.
This molding is delivered pre-primed for most paints. Always test your paint on a small section to make sure there are no compatibility issues with the paint and primer. Most home latex paints work great on our molding.
Read the DIY Pro Tips section about using adhesive when installing.
Our crown molding installation video, walks you step-by-step through a full installation, including how to measure for crown molding, with plenty of tips on how to make your project look amazing. Below are some of the key things to remember.
Use Adhesive for a Lasting, Seamless Finish
Apply a small bead of adhesive along the length of the molding on the back where it contacts the wall and the ceiling (watch). Finish nails help secure the molding while the adhesive sets. Most importantly, apply adhesive between any molding being joined end-to-end. You will need 1 tube of adhesive for about every 6 pieces of molding. Our General Purpose Construction Adhesive is cheaper than Loctite’s PowerGrab or PL Premium and works just as well in most applications.
The Final Piece
Cut the last piece you install on each wall just a little long. 1/16 to 1/8 of an inch is usually enough to allow you to snap that piece in place, making sure all your joints stay nice and tight. This is easiest to do when you leave the last two feet of the previous piece unnailed (watch).
Our moldings do not need to be primed. Plus, since polyurethane does not absorb moisture, paints that are
self-priming or a
Paint & Primer in One may not dry properly. Standard latex paint is less expensive and will give you the best result.
Be Mindful of Temperature Effects
All materials expand and contract with changes in temperature. For best results, when installing on a hot day, keep the molding inside until you are ready to make your cut.
25 Year Limited Warranty
You're making a beautiful upgrade to your home and we're here to help protect that investment. We guarantee that your polyurethane millwork will be free from manufacturing defects for twenty-five years from the original date of purchase.
Warranty Conditions and Limitations
This warranty covers material defects in our polyurethane products when used in standard applications where temperatures do not exceed 150°F. It does not cover labor, consequential or incidental damages. This warranty is not transferable and applies to the original purchaser only.
We're Ready to Help
Unlike a car, there is very little that can go wrong with a polyurethane product since polyurethane doesn't absorb moisture and won't be affected by insects. However, in the rare event that you do encounter a defect with your product, we're here and ready to help. Just give us a call and we'll work with you to identify the problem and, in case of defect, supply you with replacements.
0:00 How to Measure for Crown Molding
1:13 Positioning Molding in a Miter Saw
2:11 Inside 135 Degree Corner (1st Piece)
3:45 Using Adhesive during Installation
5:29 Helpful Tip for Installing without a Helper
6:32 Coping an Inside 90 Degree Corner
8:34 Mitered Inside 90 Degree Corner
10:38 Outside 90 Degree Corner with Transition
For more how to videos, visit our DIY learning center
Most uDecor moldings are made from architectural polyurethane, which makes them waterproof and very long-lasting. Order 1 foot samples of your favorite crown molding, casing, or baseboard to make sure you love it!
We sell over 800 ceiling tiles in various styles, colors, and materials. Check out our waterproof ceiling tiles as well as the Imagination Collection, featuring printed ceiling scenes. Don't forget Accessories!
Bring your ceiling to life with a ceiling medallion or ceiling dome. Accent your design with a ceiling ring or ceiling relief molding. For those with more lavish tastes, our Michelangelo Medallions bring a flavor of old-world charm to your ceiling.
All of our accent elements are built from the same durable, low maintenance polyurethane as our moldings. They'll maintain a fresh, vibrant look for years to come; and their competitive prices enable you to create the ambience you're looking for without going over budget.