Polyurethane terrarium terrain adhesive

500g bottle of really sticky polyurethane glue, this is what we use for covering expanding foam.and polystyrene in our vivs.

Simple to use just paint onto the surface you want covered in substrate, give a light spray with tepid water and wait for it to begin to foam then start pressing the substrate into the glue, keep adding substrate and pressing in until the glue stops pushing through. press less for more expanded areas, press more to keep it flat. Oh and wear gloves, possibly several and clothes you’re happy to throw away if you get it on you it’s really hard to get off. 500g pack (roughly 500ml)