For various reaons I've turned my very large bathroom into a small bathroom and small bedroom. I had to replace quite a few floor boards and due to me not being very good at all this there are some largish gaps between the new floorboards. (nothing dangerous)
To cover up the gaps I've put ply wood down which is fine but what I want to know is when I ask some carpet fitters to come round and install carpet will they be OK about putting it onto ply instead of floor boards? Also does it matter that there is a very small step down where the ply ends and the floor boards on the landing start? Its only a small step down (used very thin ply wood, i'm guessing 5mm).