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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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Shipping & Return Details


  • 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, 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.


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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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

Timothy C.Rochester, MNJanuary 27, 2022

4 out of 5

Prep is important if painting. Great product!

Painting the crown molding was interesting. Wiping with paint thinner helped but still bubbled in the creases. I made a jig to hold the moulding in the miter saw for a consistent cut. Offering a jig to cut the moulding would be a great DIY compliment to the moulding product. The quality and strength is impressive, easy to cut smooth, and took the pneumatic finish nails better than wood moulding. My wife loves it and wants me to order more moulding and do our kitchen now.

Hi Timothy, Thank you for taking the time to share your review! We are so glad that your project turned out well. You're right, a jig to hold the molding certainly helps. Since each molding and install is different, it's something we recommend building on-site when necessary. Our moldings are shipped pre-primed and ready for paint, so you should not have had any 'bubbling.' However, since new formulas of paint come out all the time, we recommend testing your paint in one small area of the molding and giving it ample time to fully dry just to be sure. While bubbling is incredibly rare, that extra step can save frustration down the road. If you still have any questions during your install, don't hesitate to reach out; anyone here would be happy to help. Thanks again for sharing your thoughts, and for including us in your project!
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Katherine D.Kansas City, MOOctober 22, 2021

4 out of 5

Mostly happy.

I am happy with the product, it looks good. I am disappointed in the fact that I had to pay a premium price and shipping just to order two additional pieces.

Hi Katherine, thank you for taking the time to share your review! We're happy to hear that you love the look. I'm sorry for the inconvenience of the shipping charge; while shipping is free on orders of 6 pieces or more, we unfortunately have to charge for shipping when less than 6 are ordered. Thank you again for your business, and for including us in your project!
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Rosarita I.Georgetown, DEOctober 12, 2021

5 out of 5

Great East to Use Molding

Great quality, pre-primed ready to paint. Easy to install. Great fast shipping on in-stock products. Well packed and FREE delivery.

Henry M.Wilmington, DEJune 1, 2021

5 out of 5

Great Product

The order shipped quickly - faster than promised. The crown moulding went up easily and looks great in my living room. I'll definitely re-order from uDecor when I refinish my famly room.

Belinda M.Boise, IDMarch 12, 2021

5 out of 5

Awesome product

I got the crown moulding and looks great on my ceiling. Lightweight foam is the way to go looks like wood on the ceiling. I've already got tons of comments from neighbours.

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