Most orders ship out free by tomorrow, February 22nd

CM-2138 Crown Molding

2⅞" Breadth x 96" Length
Best for 7' - 8' ceilings
  • Quantity

    Per PieceThat's Only
  • 6-24

    $19.95$2.49 / foot
  • 25-49

    $18.95$2.37 / foot
  • 50-99

    $18.45$2.31 / foot
  • 100+

    $17.95$2.24 / foot
  • Quantity
    6 minimum Need less?
6 pieces = $119.70 / 48 linear feet
  • Order a 10" Sample ($3.00)

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  • TypeMolding

  • Breadth2-7/8"

  • StyleStep

  • ColorWhite Primer

  • MaterialPolyurethane

  • Ceiling Height7' - 8'

  • Height2"

  • Width2"

  • Length96"

  • Print/DownloadProduct Spec Sheet


  • 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-2138 Crown Molding is a step, 2-7/8" breadth crown molding typically used in rooms with ceiling heights of 7' - 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.

  • 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)



4.9 out of 5 stars
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Mike H.Iowa City, IAJune 3, 2023

5 out of 5

Crown molding

I was looking for a different style of crown molding and decided to go with this. Everything worked out perfectly and easy to work with.

Douglas K.Danbury, CTMarch 5, 2023

5 out of 5

Great product, fast delivery- Easy install

Order easily on website, shipping fast and tracking communication updates. Well packaged, easy install love it.

Lori B.San Diego, CAMarch 16, 2022

5 out of 5

As advertised

Lightweight, easily painted, design means can be cut from either direction

John C.New Lenox, ILDecember 27, 2021

5 out of 5

Great product and looks awesome !

Tops off the room perfectly, very happy with the quality of this product !

Kerry K.Lake Forest, CANovember 19, 2021

5 out of 5

Looks spectacular

Really great looking Mouldings. Installed well and is everything I had hoped for. Great product for the price.

Joseph A.San Antonio, TXNovember 8, 2021

5 out of 5

Terrific low profile Crown Moilding

Great clean look for a small space. Easy to work with.

Frank A.Bellville, TXNovember 2, 2021

5 out of 5

Perfect product

The molding was used to accent a wine/bourbon room ... gave it a chic/shabby look

Michael V.Oakdale, PAOctober 20, 2021

5 out of 5

Great Product

Product was as described and very easy to work with, i will be purchasing for any other molding projects!

Keven H.Salt Lake City, UTJune 21, 2021

5 out of 5

Novice DIY

I installed this in a large basement bedroom - my first paint and crown project - and I was able to install and paint. The molding was very lightweight and actually makes the room look taller. I would recommend buying a couple extra pieces to be safe. Overall, excellent service and great product.

Tatyana P.Gaithersburg, MDMay 3, 2021

4 out of 5

looks great - not easy to connect angles

The product delivery was fast. We were installing it ourselves and had a bit of a difficult time connecting corners, but it might be due to little experience. Wish they would come in 12 ft...

Linda P.Sandy Hook, CTMarch 31, 2021

5 out of 5

Looks great and so easy to install that a 70 year old woman did it by herself.

It makes the room look taller. Has a clean crisp appearance that refreshed the look of the room.

Mike Y.Englewood, FLNovember 17, 2020

5 out of 5

Just what I wanted

This product was perfect to finish off a geometric bookcase without adding weight to the finished piece. Looks great and was easy to work with.

Anthony P.Abingdon, MDNovember 12, 2020

4 out of 5

Outstanding Product But Don't Be Short

The product is outstanding however, if you're one piece short, there is no way to order one stick to finish your project.

Anthony, thank you for taking the time to leave a review. We're so glad you love your molding! We only have a minimum quantity to qualify for free shipping, but you are free to order as few as you need for your project, or if you wind up short on your initial order, even if you only need 1 piece (we take orders like that frequently). For most moldings, it's a flat shipping charge of $24.99 for the whole order, until you reach the 'minimum quantity,' at which point it ships for free. We apologize for any confusion. If you have any questions, our service team is ready to help. Thanks again!
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Ed M.West Carrollton, OHJune 13, 2020

5 out of 5

Looks great

Good product and easy to install

Steven L.Springdale, ARApril 6, 2019

5 out of 5

Great product and supplied fast

Turned room into exactly what I was looking for.. now it's time to order again for 2 more rooms

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