LESLIE: Dennis in Wyoming is on the line and has a question about a backer board. What can we do for you?
DENNIS: Yes. I just wondered your opinion on the greenboard being used behind a thermoplastic shower wall. I’m installing a shower in an alcove and they sent me the base.
TOM: OK.
DENNIS: And then I’ve got these three walls that I have to glue …
TOM: Usually, it’s – that kind of a liner usually goes on top of tile. Can you put it over greenboard? Well, the problem with greenboard is it’s not very water-resistant. I mean it’s more water-resistant than regular drywall but it’s not terribly water-resistant. Greenboard designed to be a tile backer.
So I would say if you’re going to do it, it’s probably OK but just don’t kid yourself into thinking this is something that’s going to last for more than a few years or maybe 10 years max. But I would be very careful to silicone-seal all of the seams so that you don’t have water that goes through the seams of that shower enclosure and saturate through the greenboard. Because it will sort of soften up and rot out.
DENNIS: OK. Well, thank you very much.
Leave a Reply