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View Full Version : HOW TO: Make a Realistic 'Mossy Rock' False Backdrop


Brent Strande
04-07-05, 01:19 AM
The following is how I put together a false background for an enclosure for my crested geckos. The final product will look like this:

http://bitz.net/~ato/Pictures/Brent/Lizards/Oceanic%20008.jpg

Clicking on any of the underlined text below will bring up a picture to help you out!

The supplies that you'll need will be:
Enclosure (I had this laying around, waiting for cresties, but you can experiment with many different enclosures) (http://bitz.net/~ato/Pictures/Brent/Lizards/Oceanic%20001.jpg)
Black Silicone
Brown Silicone (http://bitz.net/~ato/Pictures/Brent/How%20To/silicone.jpg)
Great Stuff Spray Insulation Foam (http://bitz.net/~ato/Pictures/Brent/How%20To/Great%20Stuff.jpg)
T-Rex Forest Bed (or other compressed brick "mulch" type of substrate) (http://bitz.net/~ato/Pictures/Brent/How%20To/forestbed.jpg)

The back wall of my enclosure is ~25"x25" and I used one tube of black silicone, two tubes of brown silicone, two cans of Great Stuff, and 1/3 of a brick of the Forest Bed.

Steps

1. Start by mixing your Forest Bed. There are instructions on the back, but basically break off a chunk of the brick (depends on how big of an area you're covering) and soak it in water for ~one hour or so. It will expand. After it expands, you will need to spread it out to dry. This will take most likely longer than 24 hours.
*I spread mine out on a garbage bag and let it dry while I completed all of the following steps.

2. Once the Forest Bed is drying, you can start to apply the Black Silicone to the back of the enclosure. This will be for aesthetic purposes only, so that the yellow foam doesn't show from the back!
*I used rubber gloves to spread the silicone over the entire back of the enclosure. You can also do the sides if you'd like, or partially on the sides, to follow the contour of the rock wall you'll be creating. Let Dry.

3. After the black silicone has dried, the Great Stuff comes next! Be sure to shake the can vigorously! When you apply the Great Stuff, it will not stick immediately to the bottom, and also will not be expanded. Be sure to cover the majority of the back wall (if you didn't figure it out in the silicone stage, it works best if the cage is lying on it's back... especially for this part!) If there are small bits and pieces of the bottom that aren't covered, don't worry, they WILL BE when the foam finishes expanding!
*The foam expanded MUCH MORE than I'd expected, creating a wall tha stuck out alot further than I'd anticipated! After it cures for 24 hours and is hard, you can cut it to mold it if you'd like. I kept it the way it was for a 'natural' look.
Click Here to see what the Great Stuff foam looks like after curing! It's VERY solid once completely dry! (http://bitz.net/~ato/Pictures/Brent/Lizards/Oceanic%20002.jpg)

4. Again, after letting the foam completey cure, you can move back to applying silicone. This is a little harder to do with all of the contours of the foam. A glove will be necessary in order to work the brown silicone into all of the crevices. (http://bitz.net/~ato/Pictures/Brent/Lizards/Oceanic%20003.jpg) This should take much more silicone than the smooth back did. While the brown silicone is still wet, sprinkle the DRIED Forest Bed onto the back wall. (http://bitz.net/~ato/Pictures/Brent/Lizards/Oceanic%20004.jpg) Be sure to cover it all thoroughly! (http://bitz.net/~ato/Pictures/Brent/Lizards/Oceanic%20005.jpg) Once it is good and covered, go back and forth across the entire back pressing down, so that the bedding will stick to the silicone. (http://bitz.net/~ato/Pictures/Brent/Lizards/Oceanic%20006.jpg) Let Dry.

5. Once fully cured, you're done! If there are any spots that need more bedding, simply apply brown silicone again and press on more bedding. You can repeat those steps as many times as necessary to complete the backwall. Once completely dried, I brushed away the loose bedding, and the remaining stuck very well. Then it's time to add the decorations! (http://bitz.net/~ato/Pictures/Brent/Lizards/Oceanic%20007.jpg) I also added fake plants, but may eventually switch to live. (http://bitz.net/~ato/Pictures/Brent/Lizards/Oceanic%20008.jpg) And finally, add the new occupants! (http://bitz.net/~ato/Pictures/Brent/Lizards/Oceanic%20013.jpg)


http://bitz.net/~ato/Pictures/Brent/Lizards/Oceanic%20013.jpg

Good Luck,
Brent Strande

CDN-Cresties
04-07-05, 01:23 AM
Awesome thread. I bet lots of people will try this out.

Brock
04-07-05, 01:37 AM
I'll be trying this out with my cool awesome sweet old school TV frame I got a while ago :) Thanks

-Brock

Brent Strande
04-07-05, 01:54 AM
I've been considering doing one of those old TVs that sits on the floor too! I've got a friend that has one or two that I can use if I want, but I don't have the space for either of em right now!

Ciddian
04-07-05, 02:10 AM
Awesome thread!! I've always wanted to try this but was way too afraid that i would screw it up LOL.

Here's a question. What if in a few years you want to change the background? would you be able to peel that black silicone off and start fresh?

How do you think this would work using mabe shale and different stone work in an aquarium?

Brent Strande
04-07-05, 09:37 AM
I don't know for sure, but with a razor blade, you can normally remove silicone from glass without too many problems, just takes a little time!

ReneeB
04-10-05, 04:26 PM
It looks great Brent, but I'd be worried about the formildahide (sp?) in the "Great Stuff) and alot of the other chems in it..

BOAS_N_PYTHONS
04-10-05, 10:32 PM
Thanks for sharing and all that info as well, and goegeous pics :)

RobV
04-10-05, 11:13 PM
Brent - that's awesome! I bet the cresties LOVE it!!

Renee - Great Stuff is 100% completely safe *when dry* for lizards (as long as they don't eat it) - people have been using for 8+ years now with no problems. Just need to let it dry completely. I think it's because its polyurethane based, as opposed to some of the other products out there.... I only trust Great Stuff...