Heya guys, lurker Tinga here. Nowhere NEAR close to building, but I'm a pretty visual person and construction and architecture has always held a place in my heart.
There was a house build a while back ( I believe that he rented it out, half earth bermed) and he was having difficulty covering the foundation.
Back when there was a time I had fishtanks. Show tanks and breeders for African Cichlids. I now buy Jeeps which are terribly MORE expensive, but so much fun.
In a smaller tank I did, I made my own rock background using the polyurethane rigid foam insulation and a product called Dryloc. Couple of minutes to hours of fun, a steak knife
and gorilla glue and you can have your own rocks. Not sure of the applications, but It might have worked for that fella.
What I used:
Foam
Steak Knife
Gorilla Glue
Dryloc
Powdered Concrete Dye (in charcoal and brown)
What I started with. That was 2" foam with several cut out rocks gorilla glued to the face. I also glued some to the bottom of the tank.
(https://i4.photobucket.com/albums/y116/Tinga_Wolvesbane/P1020882.jpg)
First Coat ( kinda ugly)
Dark coat goes on first. Dryloc was made for lining cisterns, and after MONTH of PH testing and heavy metal tests everything was GREAT.No dead fishes. I mixed several batches of dryloc mixed with the concrete coloring.The dryloc has a sandy texture to it, so it really helps the rock look. If you want smoother rocks, sandpaper works well.
(https://i4.photobucket.com/albums/y116/Tinga_Wolvesbane/P1020887.jpg)
Start working up with lighter colors. It's really fool proof.
(https://i4.photobucket.com/albums/y116/Tinga_Wolvesbane/P1020894.jpg)
But Like I said, not sure WHAT this can be used for. We secured it to the tank with silicon and it stayed. Maybe you want an insulated shed for a pump or fake rock covering a cistern hatch..I dunno possibilities are endless and sure of a heck a LOT cheaper than those fiberglass rocks!
Thanks for the tutorial, Tinga. Somewhere I may find a use for that info ...you never know.