Tongue and groove chipboard flooring question.

[ian]

I need to replace one sheet of the 18mm 600x2400 chipboard in my attic. After removing the adjacent sheets I bought a new sheet from B&Q, but the tongue and grooves are not on the same edges so it won't fit.

The existing flooring is maybe 5-8 years old and says on the back Span Floor P5 (formerly C4) BSEN 312 AP.

Standing on the floor looking down at the top surface the groove is on the 2400m side on the left and the 600m side at the top.

Does anybody know who makes 18mm chipboard with the grooves in the same place?

Thanks.

[Heliotrope Smith]

Have you tried turning the new sheet over? Just a thought.

[Lurch]

On Mon, 13 Aug 2007 22:30:23 +0100, "Heliotrope Smith" mused:

I thought that, but then thought there must be something I'm missing.

I also turned the post upside down as well.

[Heliotrope Smith]

You probably are. Never mind it is late.

[Brian G]

Ian,

You don't make "new grooves". You simply plane the tongues off the board, drop it into place and screw it down to the ceiling joists - exaclty as you would when replacing a tongue and grooved "real" floorboard!

Or have I missed something here?

Brian G

[ian]

Thanks for thoughts. This is "standard" 4 edge t&g sheet/ board flooring. But apperently different manufacturers have slightly different edges so its not always compatible.

The board has a top side and underside and the t&g are not symetrical so turning over doesn't work. I don't want to cut tongue off, especially when I can slot in a full sheet, (if I can get the right one).

[Weatherlawyer]

Just put noggins in wherever the boards meet so that any weight on the ends is taken by the joists. If the lengths don't overlap a joist, screw or nail a 2x2 along that length. If you need to put a wider piece in you might be better off running a noggin through at each end and fixing a 2x2 to that.

Knock off the lower tongue so that the board will slip into place.

All that matters is that the abutting edges all have some measure of support, that's the old boards too, not just the new.