The floor the refrigerator is standing on should be made to be liquid tight. The base of ref and outside area should be sealed so water cannot enter the coach. If the area if designed correctly there will be an incline from the outside to the inside so water flows away from inside and if you ever had a gas leak the LP could fall out and not puddle. Good luck and keep us posted.
Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7