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CM-1157 Crown Molding

3⅞" Breadth x 94.5" Length
Best for 8' ceilings
  • Quantity

    Per PieceThat's Only
  • 6-24

    $19.95$2.53 / foot
  • 25-49

    $18.95$2.41 / foot
  • 50-99

    $18.35$2.33 / foot
  • 100+

    $17.95$2.28 / foot
  • Quantity
    6 minimum Need less?
6 pieces = $119.70 / 47 linear feet
  • Order a 10" Sample ($3.00)

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Shipping & Return Details


  • TypeMolding

  • Breadth3-7/8"

  • StylePlain

  • ColorWhite Primer

  • MaterialPolyurethane

  • Ceiling Height8'

  • Height2-3/4"

  • Width2-3/4"

  • Length94.5"

  • 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-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.

  • 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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Susan F.Cleburne, TXMay 7, 2021

5 out of 5

DIY Crown Molding

uDecor's molding is the crowning finish to our great room remodel. The quality of this product surpasses the wood crown molding we could have used locally. The price was great and the shipping was super fast. It looks fantastic and I couldn't be happier. All the online instructional videos were fantastic for us DIYer's.

David K.Wesley Chapel, FLApril 22, 2021

5 out of 5

Installed as cabinet crown molding

We installed this as crown molding on our kitchen cabinets and they look awesome! Very good price and added some flair to our kitchen.

Janice D.Salem, MAApril 14, 2021

5 out of 5

Ceiling Medallion

This was a very good product, with a nice design and great price. Unfortunately it was short by 1/4 inch and didn't fully cover what I needed on the I had to return. I was disappointed that I had to return, as I really liked it!

Sharon R.London, KYMarch 18, 2021

5 out of 5

ceiling crown molding

absolutely love it and the customer service was outstanding

Jim D.Madison, ALMarch 2, 2021

5 out of 5

Beautiful crown molding

Easy to install and has made the room look great.

James H.Fenton, MIDecember 24, 2020

5 out of 5

Great Co.

The order and delivery process was perfect for whatever I ordered.

Sandy H.Radford, VADecember 8, 2020

5 out of 5

Looks really good.

The molding really gives a finished look to the room. I installed it on top of a brick wall and it looks perfect.

Randy K.Pompano Beach, FLOctober 16, 2020

5 out of 5

Looks Great!

Delivered quickly. Was installed by a pro and really dressed up the kitchen cabinets!

Richard R.Chicago, ILJuly 5, 2020

5 out of 5

Great product!

The molding has greatly increased the higher end look of our condo. We installed it in our foyer, master bedroom and living room. It looks finished and polished and we couldn't be happier. Due to COVID we haven't been able to show it off other than in photos and we get many WOWs! It was affordable, easy to work with, trim/cut to size and it is lightweight and easy to deal with when placing it up overhead. Paint went on very easily. We are recommending it to everyone.

Vincent S.San Bruno, CAMarch 8, 2019

3 out of 5

Decent product, bad customer service...

The overall product is okay. I'll start with the negative. Many pieces had stuck on debris from manufacturing that I sanded off and/ or scratches to the material. I ordered 48 pieces of this material. 47 pieces of the correct material arrived but 1 was incorrect. I emailed and received no response. I thought maybe I wouldn't need this last piece since I ordered above my measurements. Of course i get to the end and i needed this last piece that they screwed up. I ended finishing my bathroom with small leftover pieces. Not ideal at all!!! Once the product is up, it looks nice and as we all know crown moulding really improves a space. For future needs, I wont be using Udecor again though due to the poor service.

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Hello Vincent, we appreciate the feedback. I’m very sorry to hear that you were not contacted back by customer service, and I can assure you that it is not customary of our friendly team of representatives to overlook or disregard a message. We have located your email and one of our team members will be contacting you shortly to see if we are still able to assist in any way. Your concerns are of the utmost importance to us and we sincerely thank you for your patience with us while we work to resolve this issue for you. We look forward to speaking with you soon!
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Michelle G.Stafford, VAApril 20, 2018

5 out of 5

Easy to Install

I had never installed molding before I ordered these from uDecor (neither had my Dad). The two of us together were able to get them up quickly and easily. We used a combination of adhesive caulk and finishing nails to make sure it stayed in place. The room we installed them in had 9' ceilings and the area where the ceiling met the wall was showing expansion cracks. Rather than try to caulk it (and have it show up again in a few years), we just put up molding. The room looks sooo much better now. The shipping was very fast. I'm really pleased with the product and level of service I got from this company. I only wish pre-made corners were available for this size (or that I could pay an additional fee to have corners pre-mitered for me). However, these were not too difficult to cut with a coping saw and the results look really good.

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Lester E S.Lakewood, COFebruary 25, 2018

5 out of 5

It's Going To Be Stunning

I don't know if I answered this before, so if not, here it is. I'm redoing an old Farm House and a lot of the interior can't be duplicated, and this molding is just what the House was wanting. Thanks for the great customer service a quality product and the samples, which made all difference. Les

Judith C.Aberdeen, MDJune 6, 2017

5 out of 5


Arrived in perfect condition......will be installing in August!!

Chris H S.Highlands Ranch, COMay 13, 2017

5 out of 5

Looks great! Nobody can tell that it is not real wood.

My installer said the product was very easy to work with and install. Something I was somewhat concerned with but was not a problem. I highly recommend this product to everyone, especially the price point it is at. Real wood would have cost me 7 or 8 times as much based on local pricing.

Kimberly L.Santa Maria, CAMarch 8, 2017

5 out of 5

Looks amazing even on vaulted ceiling

Don't let anyone tell you that you can't do crown molding on a vaulted ceiling. It elevated the entire room. I love how it frames everything in, and we had some complicated elevation changes and rounded corners.

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