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CM-1105 Crown Molding

6⅜" Breadth x 94½" Length
Best for 10' - 11' ceilings
  • Quantity

    Per PieceThat's Only
  • 6-24

    $27.95$3.55 / foot
  • 25-49

    $26.95$3.42 / foot
  • 50-99

    $25.95$3.30 / foot
  • 100+

    $24.95$3.17 / foot
  • Quantity
    6 minimum Need less?
6 pieces = $167.70 / 47 linear feet
  • Order a 10" Sample ($3.00)

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Shipping & Return Details


  • TypeMolding

  • Breadth6-3/8"

  • StylePlain

  • ColorWhite Primer

  • MaterialPolyurethane

  • Ceiling Height10' - 11'

  • Height4"

  • Width5"

  • 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-1105 Crown Molding is a plain, 6-3/8" breadth crown molding typically used in rooms with ceiling heights of 10' - 11'.

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)



5 out of 5 stars
5 star
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1 star

Ronald E.Mount Victory, OHJanuary 13, 2023

5 out of 5


Well shipped... Lightweight easy to install... Recommend for 9' ceilings... Has an old Look to it... Renovating a l0s farmhouse this is period Perfect, Fast shipping highly recommend..

Nathan S.Jersey Shore, PAMarch 29, 2022

5 out of 5

Great service

Great service and a good solid product.

Lindy N.Las Vegas, NVFebruary 17, 2022

5 out of 5

Fantastic product, Excellent Quality, Quick Delivery, Great Value

I couldn't be happier with the crown molding we recently purchased from uDecor. Jason, the sales rep, was very helpful and friendly. The end results are stunning. I highly recommend this product and uDecor.

Scott B.Kendallville, INAugust 19, 2020

5 out of 5

Great company

Amazing customer service and ship time was awesome

Michael W.Fairport, NYNovember 30, 2016

5 out of 5

Good product

It is a good product to buy

Amy S.Chapmansboro, TNSeptember 21, 2016

5 out of 5

Crown Molding Corners

Great product! We used this on our outside patio and it was easy to install. Also, fast shipping!

Linda B.Green Valley, AZJanuary 16, 2016

5 out of 5

Love it!

The product is lightweight, perfectly molded with intricate lines, and painted up nicely. It looks very elegant in our bedroom!

Tom G.Leesburg, FLFebruary 27, 2015

5 out of 5

Looks great

Using this polypropylene crown saved me a fortune. When complete no one, no matter how experienced, can tell the difference from real wood. Even less expensive than MDF. Only issue was waiting for delivery, about 6 weeks. Recommend you order enough the first time as they don't seem to keep much stock. Love the finished product! Staff was very polite, outright friendly!

Ronald S.Foxboro, MAFebruary 5, 2015

5 out of 5


Great product. Shipped well. Very high quality, high density, easy to work with. Installed myself and followed their instruction video. Used construction glue, finish nail gun and used the nail routine to hold the "other end" of the crown molding. Had only four inside corners and cut the 22.5 Degree angles nicely with the chop saw. Filled in all the seams with caulking. Painted white and it looks beautiful. Cannot tell it is not wood.