I guess for urine issues it's good to have for protecting your subfloor against contamination. But for flooding, it sucks. I have a place where the hotwater heater gave out and flooded about 30sqft of closet and entry. I got all the carpet dry but am spending a second day drying out the pad. Everything under that pad got no airflow due to the thin plastic 3M liner. Something simple turned into a 3-day adventure. I'm not big on this type of pad after seeing how is locks in the moisture.
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