Chipboard floor in loft

[Rosstitute]

I am looking to put down a chipboard floor in the dead space in my maisonette flat with a view to using for storage space and, eventually, putting a walk in wardrobe in the space behind one of the bedrooms.

My query is, there is currently some chip board already installed and I'm unable to identify the brand. I was wondering if different brands of chip board are generally compatible in terms of being able to join them together? Ive had a look at some of the usual suspects websites (i.e Wickes, B&Q etc) but I'm unable to determine from the images there that the tongue and grooves are the same.

any advice would be much appreciated

 

[ree]

Is it possible to lift a piece and take it to a retailer? But in reality, why bother if the T&G is slightly off? Tongues can be cut off and pieces butted up if that seems necessary.

 

[foxhole]

Chipboard is pretty much all the same , Cr*p.