ply for flooring - must be WBP?

27 Aug 2012
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United Kingdom
Hi all

Bit of an urgent one, this. I'm redoing the kitchen floor. Currently, it is old floorboards that are a bit uneven; and a solid floor in the hearth area which covers about 1/3 of the floor. My plan is to:

- remove the floorboards,
- replace with ply,
- check for level against the solid floor
- put hardibacker boards over the ply to 1) bring the level of the ply section up to the level of the solid section and 2) give me a good surface to tile on to

I was going to pick up some ply from B&Q. I hired a van to collect it last weekend but could not do so as the guy who operates the saw was having dinner the first time I went; and the saw was broken the second time. My dad put an order in with Tradepoint for some to be delievered on this weekend (I'd returned the van). They said that they could deliver Sunday, but what they actually meant was Tuesday, which is no good.

So in a bit of a panic last night I called up a local timber merchant to order some. they have cut it already and are about to deliver, but in my panic I forgot to specify that I wanted WBP. Given the price (About £30 a sheet), I suspect it's just cheap softwood plywood.

It's due to arrive in a few mins. I really, really hope I can use it as it is a very expensive mistake if I cannot, but I don't want to put something down that is not going to be suitable. My only comfort here is that I do not plan to tile on to the plywood directly: I'll be tiling on to the hardibacker.

Any thoughts would be welcome!

EDIT: a few facts that might be relevant: the kitchen is on the ground floor of a 1930s semi. The current floor doesn't feel soft and/or damp, and there is ventilation below the floor (the void beneath the floor is about 2-3 feet deep). The joists are supported in places by being sat on brick pillars and shallow walls in the floor void.
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It's arrived. It is UGLY stuff. Orange in colour, and really, rough.

However, it does say "Exterior CC" on it. Does this (improbably) mean that it is exterior grade and therefore WBP? Or am I clutching at straws?!


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Thank you! That's great news. Right, I'm getting the crow bar. These floorboards are coming up!

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