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CM-1020 Crown Molding

4¼" Breadth x 94½" Length
Best for 8' - 9" ceilings
  • Quantity

    Per PieceThat's Only
  • 6-24

    $17.85$2.27 / foot
  • 25-49

    $16.95$2.15 / foot
  • 50-99

    $16.45$2.09 / foot
  • 100+

    $16.10$2.04 / foot
  • Quantity
    6 minimum Need less?
6 pieces = $107.10 / 47 linear feet
  • Order a 10" Sample ($3.00)

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  • TypeMolding

  • Breadth4-1/4"

  • StyleRope

  • ColorWhite Primer

  • MaterialPolyurethane

  • Ceiling Height8' - 9"

  • Height3"

  • Width3"

  • Length94-1/2"

  • Print/DownloadProduct Spec Sheet


  • Product Video Placeholder Image
    Product Video
  • Product Video
    How To Install Crown Molding
  • Product Video
    5 Tips for Finishing Crown
  • Product Video
    What is Architectural Polyurethane?

Product Description

Quick Facts

  • Made from dense durable Polyurethane
  • Lasts a lifetime
  • Mold and mildew resistant
  • Lightweight and easy to install
  • Safe to install indoors or out
  • Exquisite detail and design consistency
  • Won't crack or splinter like wood or hard plastic

CM-1020 Crown Molding is a rope, 4-1/4" breadth crown molding typically used in rooms with ceiling heights of 8' - 9".

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.

  • Breadth - the distance between the outer contact point with the ceiling to the bottom contact point with the wall.
  • Height - the distance between the ceiling and the bottom contact point with the wall.
  • Width - the distance between the wall and outer contact point with the ceiling. The breadth is the hypotenuse of the right triangle whose legs are the width and the height.

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. Loctite’s PowerGrab or PL Premium work 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.

  • Polyurethane products are for decorative uses only.
  • Polyurethane products need a finish coat of paint during installation; it is the purchaser's responsibility to make sure their paint works well with the product (test and let dry on a small piece first).
  • Before installation, allow your polyurethane product to acclimate to room temperature for 15 minutes.
  • All polyurethane moldings must be installed with tight fitting joints (see installation instructions) as well as adhesive between the joints to prevent seams from expanding during changes in season.

We're Ready to Help

Unlike a car, not much 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.


At, we know that projects take a while, and sometimes plans change. To start a return, please call us at 1-877-550-0600 or email; we'll be happy to assist you!
  • 90 day return window with no restocking fees
  • Products must be unused/new and in their original boxes
  • Customer is responsible for return shipping cost (we are happy to help arrange shipping)
  • Partial returns where the quantity discount tier would change are refunded the difference between the original total and the total based on the kept quantity (see example)



4.8 out of 5 stars
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Gary H.Batavia, NYMay 8, 2024

5 out of 5

Great Add

We have an older home and this crown molding fits right in and enhances the look of our parlor. It's fairly easy to work with, especially that it's lightweight and basically goes up with adhesive and a few nails.

Carson W.Kissimmee, FLMarch 5, 2024

5 out of 5

Beautiful results from this product!

Lightweight and extremely easy to work with and looks great ! I love the look.

Darrell A.Neosho, MOMarch 1, 2024

5 out of 5

Adds real class to a room

This is a very good product to work with. It really adds a lot to a room. For a great look, I think it is equally important to install your crown above doors and windows for a real finished look.

Innocent R.Silver Spring, MDNovember 20, 2023

5 out of 5

Great product

Great product, light to handle, easy to work/cut. Great help video for DIYers

Joshua B.Lewes, DENovember 14, 2023

5 out of 5

Good looks and straightforward installation

The polyurethane crown molding was in great condition and the primed surface was ready for paint. The installation was straightforward and the molding looks great! The people from uDecor were very helpful and attentive from ordering a sample to after delivery of the molding.

Patricia C.Deptford, NJJuly 22, 2023

5 out of 5

Looks beautiful!

First of all, the customer service was excellent (like the old days). My questions were answered promptly (and I did have a few!). Secondly, after the order was placed it was arriving lickety-split! Finally, today the product was finally installed by my worker and it looks phenomenal. Thanks uDecor. (I should mention that I placed two order... smaller one for my bedroom and followed up with another order for my large living room and dining room.

Allie H.Marlton, NJJune 20, 2023

5 out of 5

Great Product

My wife and I finished our home remodel with your crown molding. We were so impressed with the product, we decided to add the matching baseboards.

Ralph W.Osyka, MSMay 29, 2023

5 out of 5

We were very pleased with product

The crown molding was great. Arrived in a very short period of time and all the pieces were in perfect shape. We had looked all over to find the exact molding., we had this same design from 20 years ago and wanted to match. It was perfect I will use Udecor if I ever need any fancy molding. We HIGHLY recommend them

Nick S.East Hanover, NJMarch 23, 2023

5 out of 5

My wife was very excited with the project.

Everyone loves it and they think it is real wood. The tip on your video of putting nails the width of the molding was great. I did it alone and it helped tremendously.

Bonita L.Gaffney, SCNovember 9, 2022

5 out of 5

Love it

Everyone is amazed

Kathy M.San Antonio, TXJune 16, 2022

5 out of 5

Love my crown molding!!!

I literally say "WOW" every time I walk into our living room! We have gotten so many compliments about how great it looks. The shipment arrived when we expected it. It was packed well and each piece has been in perfect condition. We have only done our living room so far, but will be putting up the crown on the rest of our house next. It was easy to install. It cuts well with our miter saw and the corners and sections line up great. My husband and I did it ourselves - it does help to have two people.

Rola H.Union, KYMay 2, 2022

5 out of 5

Looks great

Great customer service

Shirley B.Clewiston, FLApril 24, 2022

5 out of 5

Great product

Just amazing

Anthony K.Coldwater, OHApril 19, 2022

5 out of 5

Crown molding

Excellent customer service and helped with any issues!

Sadia H.Bethlehem, PAFebruary 7, 2022

5 out of 5

Fast service

Love the customer service and product is also good

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