Filling in floor

[Allhailkingcharlie]

I have a part of my outdoor shed which is about 1m2. It's lower than the rest of the floor and I'm looking to put something in there. What can I use to bring it up to the rest of the floor? It's about. 10cm drop. Thanks

Pour some concrete?

@Helenahandkart that's what I was thinking. Didn't know if anyone else would suggest something else

Concrete is the easiest and cheapest option. You could use a deep fill levelling compound, but would probably require multiple layers and be an unnecessary faff.
If it was me I’d do concrete, and then maybe use a bit of levelling compound on top to fine tune it if you want an exact match to the rest of the floor.
You might need to prime the concrete first, and/or leave it to cure for several weeks before using levelling compound.
The other thing to consider is whether to use a damp proof membrane under the concrete.

Wouldn’t bother with concrete. Will be quicker and likely cheaper to lay 2x4’s down and then sheet material ontop. 2x4 is about 95mm so pretty much what you need. 2x3 would give you the ability to put 18 or 22mm chipboard ontop and as long as resting on floor would take weight. Make sure to put damp proof membrane under the wood if doing that, or if pouring concrete you’ll need a damp proof membrane as part of that. Google concrete slab.

On the subject of that, pouring a concrete slab is surprisingly hard if you’ve no experience. You’ll need to get it level and smooth otherwise your floor will be all over the place. If DIY I’d definitely go down the wood joists route. Can also get levelling decking raisers to level off. Basically wood = lots more slack to correct if you get it wrong. Pouring concrete 1 chance, and if you mess it up you’ve got a ton of cement to break up. Of course if just a garden shed you may not care too much for perfection.

Thank you both for the advice. I'm not too fussy about it. I just wanted a quick way of doing it.