How to build faux stone panels that look natural
Fake rock walls, or more commonly called "faux stone panels," are very large, temporary walls that you can build for many reasons, hence why they are called "fake." They are useful for many things but are essentially for decoration purposes or used by entertainers or magicians in plays, theaters or special events that would want a temporary wall. The catch about them is how they actually look realistic and as if they were there all along. They require a lot of work and creativity to do, so the larger a number of hands to help, the better for you.
The fake wall we are going to build is made of sturdy paper, but you can use many materials and let your creativity flow. By starting with the basics, however, we recommend following these materials for now.
Scissors or razor blade
Portland (cement without rocks)
textured spray paint
Building the wall
With a staple gun, hang the sturdy paper every 4 to 6 inches. Make sure the paper will be able to hold its weight and not look out of place or too loose. The closes to the surface, the better.
Overlap the paper every six inches and seal it off with a packaging tape. Cutting the paper a bit larger than the area you'll be covering is better because you'll trim it later on.
You'll be applying foam to the fake wall, so consider laying down something to protect your carpet and walls.
Creating the texture
You're ready to apply the foam to the wall now, so start by shaking the can and spraying in the entire paper leaving only about 1 inch because you'll be trimming it later.
While spraying the foam, do not worry too much about making it even as you'll also want to create uneven texture for it to resemble rock and stone.
Remove round bubbles with your gloved hand to prevent them from getting in the way when painting the wall.
Now that you applied the foam, you'll have to wait for it to expand and let it dry. From 2 to 4 hours is enough for it to dry completely.
Now is time to mix the portland with water to create the texture you're looking for.
Using the brush, paint the textured wall with the mixture you made to create a grayish pigment.
The mixture will dry out in about 8 hours, so you'll be ready to put additional details to the wall once that's over. Remember to wait patiently for it to get dry. Otherwise, it can ruin the appearance of your wall and look like it was painted.
After it becomes dry and you're ready to continue, grab the spray can again to finish your wall with some cosmetic details using textured spray paint.
First, pick grown and black colors that look naturally like rocks to spray in the textures. Grained textures are welcomed and highly recommended. Don't be afraid to mix the colors, the mixture will create additional flavors in the palette and will give the apparition that it is natural.
You're almost over with your faux stone panels; you just have to trim the paper you left around the edges. These create a more realistic feel to the rock panels you built.
Now that you're over, you have your rock wall right where you wanted it. You can adapt the environment to it for it to look natural in that spot. Plants and bushes are a good touch.