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CM-1066 Crown Molding

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    How To Install Crown Molding
  • 5 Tips for Finishing Crown
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  • 25 -49 Pieces $9.50

  • 50 -99 Pieces $9.20

  • 100 + Pieces $9.00

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  • TypeMolding

  • Breadth3-1/4"

  • StylePlain

  • ColorWhite Primer

  • MaterialPolyurethane

  • Ceiling Height8'

  • Height2-1/4"

  • Width2-1/4"

  • Length94-1/2"

  • Print/DownloadProduct Spec Sheet

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-1066 Crown Molding is a Plain, 3-1/4" 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.

Installation is simplified with the use of modern adhesives. Small finish nails are used to secure the molding while the adhesives set. See below for installation instructions.

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.

  • 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.

When planning for crown molding, inspect the walls and ceiling to see if any vents or other objects are within the footprint of the molding. Consider mitered returns at the ends of any molding runs that may be interrupted by these items. Allow 48 hours for the molding to acclimatize to the conditions where it will be installed.

It is easier to paint the molding before installation. Working at waist level is always better than working over your head. Paint your molding before you start the installation process. Then touch up the imperfections after you are done with the install.

ALWAYS test a section with your paint of choice before committing to painting all of your molding. Paint formulations change all the time and you want to be sure there is no adverse interaction between your paint and the primer on the molding.

Joining Pieces-
Always use an appropriate amount of adhesive on the end of any of the molding being joined end to end. This prevents the molding from separating as the house walls expand and contract with temperature changes.

Last Piece on a Wall-
For a tight fit and seams, cut the last piece that is going to be on a 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.

Lining Up The Pieces-
When two pieces of molding are being joined together in a run (end to end) leave the last two feet of the open end of the installed molding loose so you can have some alignment room when you join the next piece.

Finishing The Job-
Use Spackle to fill in nail holes and painters caulk on the edges between the molding and the wall and ceiling. Touch up these areas with paint.


uDecor, Inc. provides a LIMITED LIFETIME WARRANTY to the original purchaser of our polyurethane products. This LIMITED LIFETIME WARRANTY provides that the polyurethane material will be free from manufacturer defects in material and workmanship under normal and expected use. This warranty does not encompass all of the products sold by uDecor, Inc. and is exclusive to our polyurethane products only. Other products may carry their own manufactures warranty. Call us at 1-877-550-0600 for details.

uDecor, Inc. provides a LIMITED 5 YEAR WARRANTY to the original purchaser on the FINISH of our polyurethane products. This LIMITED WARRANTY provides that the FINISH on the polyurethane material will be free from finishing defects under normal and expected use for a period of five (5) years from the date of purchase. This warranty does not cover failure of a customer applied finishing system caused by material incompatibility.

  • Polyurethane products are for decorative use only
  • Primered products must be finished with an additional layer of finish paint. User is responsible to ensuring that the chosen finishing system is compatible with the primer/material.
  • Should be installed with non-corrosive fasteners and urethane approved adhesives in accordance with the installation instructions
  • Unprimed areas should not be exposed to UV light (sunlight)
  • Polyurethane products should not be installed in areas that experience ambient or surface temperatures above 140 degrees fahrenheit
  • Polyurethane products should be stored flat in normal ambient temperatures

If the material proves to be defective and has been installed and existed within the bounds of the above requirements, the customer should contact uDecor, Inc. in writing or by phone within 30 days of discovering the material defect. uDecor, Inc. may require digital images, a sample of the material or a combination of material and images to be sent to uDecor, Inc. for evaluation. Upon review of materials and installation methods, uDecor, Inc. will determine if replacement, repair or refund is appropriate. uDecor, Inc. is not liable for the cost of labor, transportation, or any other expenses incurred in conjunction with the purchase, use and installation of the material.

This limited warranty does not cover damage from the result of mishandling in transportation, acts of God, customer modifications, vandalism, misuse, abuse, improper maintenance, unreasonable care, or other causes that did not arise from manufacturer defects in workmanship and/or materials. No person or entity is authorized to change, modify, or amend the terms of this limited warranty in any manner.

This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. This warranty applies to our polyurethane based materials only.

Contact: uDecor, Inc. • 8302 Espresso Drive, Suite 130 • Bakersfield, CA. 93312 • 877-550-0600 •

Allow 48 hours for the molding to acclimatize to the conditions where it will be installed

For more how to videos, visit our DIY learning center



4.6 out of 5 stars
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5 out of 5

Good Product / Looks Great

This was delivered quickly and was easy to install. Once its installed you cant tell what the material is as it looks just like a wood molding. Great product and would buy again.

Other products reviewed on this order: CM-1027 Crown Molding, WR-9080 Molding, WR-9132 Flat Molding
5 out of 5

Great Products! Stellar Customer Service!

Order comes quick. Easy to install. Customer Service Reps always available.

5 out of 5

Easy to install decor crown molding and corner crown

We have installed the udecor crown molding and corners in our living,dining,bathrooms and hallway so far, it is easy to install and looks amazing, we are not done yet we plan to also install this same molding in two of our 3 bedrooms in the near future. We are very pleased with the look in these spaces. Also we are pleased with how quick we received product after we ordered it, 2 to 3 days and it was well packaged no damage.

5 out of 5


I ordered this crown molding

1 out of 5

Dents easily

Product looks good itís lightweight however it is so soft that using a nail gun house they suggest will get the plastic , If you put the nail gun in the wrong spot just by accident youíll have a ding. They say that the joint put up together easily and what I found that even following the directions they are not the same width or height. Tried to fix the dings and dance with joint compound it didnít work however I have some issues with it looking like itís a little lumpy. It just seems that each one is a different width And did not line up. I donít call myself a master carpenter however Iíve been doing renovation work for the last 35 years. And it may be lightweight But it does not look like the videos that they show.

See Full Review
Collapse Review Weíre very sorry that youíve had an unpleasant experience with our molding. Typically, as long as the PSI of the nail gun is set to 100 or less, denting shouldnít be an issue. Weíll be reaching out shortly to assist you with your installation. Thanks for your feedback!
5 out of 5

Makes the rooms look finished

Highly recommended fair price for this product.

5 out of 5

Looks Great!

Looks Great, easy to work with. Would recommend to anyone!

5 out of 5

Great Service, Great Product

Love this product, easy to work with and Im a beginner with crown molding!!!The main reason I bought this product was because they took the time to make the videos and show beginners like me how to how to install crown molding. Thanks for all the help UDecor

4 out of 5

Good Experience

I previously ordered a 5in crown molding but when I received it the wife was not too fond of it. She said it was too large so we ordered something smaller. The return went smoothly and I wind up ordering 3 1/4. The molding was easy to work with and the miter cuts were very clean. It looks great. I wind up doing the whole first floor. I would recommend this product. In fact, I plan on ordering base molding to complete my project. Thanks, UDecor.

5 out of 5


Excellent quality. What I loved about uDecor was I was able to order 7 samples and hold them up on my walls to see which one would work best. I have not yet worked with the material, however the sample is straight and well defined. I can't see any issues working with this product.

5 out of 5

High quality

The molding arrived swiftly. It is machined to high standards. Painting was a snap. The extra flexibility of the polyurethane makes installation easier than finger joint wood.

5 out of 5

Unconventional Use

Used this to add character to my fish tank stand. Looks great and was easy to use.