How Durable is coroplast?

Never had urine make it through the coroplast here...worst thing is it has discolored it a very little but thats all.

I have coroplast in my hedgehogs cage and have never had any trouble with urine going through. Just make sure you have lots of bedding(whatever you use) so that it soaks it up so none runs to the seems of the coroplast.

Yup, the bedding should take care of leaks

Ditto here. no worries.

I was inititally woried about this also to the point i was looking for "safe" silicon or adhesive. What I did was simply used some packing tape to hold the shape of the corner and to also act as a seal. When I change the cage I use a few layers of newspaper and then bedding. Even on the corner that has a drippy water bottle I never had any leaks. Bedding and paper soaks it up before it hits the tape and coroplast.

you would need a herd of piggies long before you have to worry. Enjoy and have fun with the cage.

ok thanks...it sounds like I don't have to worry about it

even if you had no bedding, the urin wouldn't leak through the coroplast, unless you didn't make it right..Bedding just soaks up the urin.

Auzziefreak is right. Even without bedding, the urine shouldn't be able to get out (if you made the cage correctly).