How to Install Interior and External Polyurethane Corner Blocks for Crown Molding

I knew point blank that when I remodeled my bathroom in my new house that I wanted crown molding. However I wanted to be able to install the crown molding as fast as possible without having to go out and buy myself an expensive miter saw to make 45 degree angle miter cuts.

I began researching and discovered that I could literally eliminate the need to cut angle cuts on the crown molding simply by adding corner blocks to each corner of the wall.

Unfortunately as I began my quest for find low priced corner blocks I learned that I had to be careful with how I went about this, as you have interior/inside corners, and external/outside corners that must be covered.

Your interior corners are the corners that dip in to make up the wall. Your external corners, or outside corners are the corners in the room that may jet out. Not ever room has outside corners but for those of you with outside corners, like my bathroom had, I had to ensure that when I ordered my polyurethan corner blocks, that I ordered just enough of them to make one large block for the one outside corner in the room.

My room consisted of 5 interior corners, and 1 external corner.

I needed a total of 8 corner blocks. I ordered mine on ebay in a medium size right online, and paid a really decent price for them.

Other sites sell corner blocks, but be sure to read the description to ensure you purchase enough of them to finish the job.

Here is how they work:
 
1 corner block is capable of covering one interior corner. However you need 3 of these individual corner blocks in order to make your outside corner block.

You may need more depending on where you purchase them.

At any rate, to create the outside corner block I had to glue together 3 corner blocks to make 1 large block to cover all angles of my outside wall corner. You will want to use Loctite adhesive and a caulking gun to seal them together. Allow them to dry.

After the blocks are all dry and they are sealed together, you will want to use some Spackle on the seams to blend it to make the seam disappear. After Spackle, you will then sand it to give it a smooth and even look.

While this large outside corner block dries feel free to install each of the other corner interior blocks into place. You will need to use a caulking gun and a tube of Loctite Adhesive. Apply the adhesive to the blocks and simply stick them up in each interior corner.

To ensure they do not slip down you can use painters tape to hold them in place, although it is not really necessary because the adhesive works very fast.

Once the corner blocks are all installed to the corners, in and out walls, you can now begin to install your crown molding.

Why Use Corner Blocks?
 
You will save yourself quite a bit of time using them. You will not need to buy or rent an expensive miter saw to make angle cuts, and they also add a nice touch of class to the room.
Instead of wasting a few hours making perfect cuts, you can take those hours and literally finish the job in the same amount of time.

Where To Buy:
 
A quick search online will take you to what you need. They are much cheaper online than say a hardware store. Hardware stores carry them, but they are usually wood blocks, not as decorative looking and cost a heck of a lot more money. The polyurethane corner blocks are much cheaper, they are easier to install to the wall, and they can be painted over just like wood corner blocks. Your preference is however your preference; wood or poly; but personally for a cheaper, lighter, and easier install go with the polyurethane.