Carpet tiles can be laid in all areas of the home, and they're ideal for awkward-shaped rooms as you buy for the area, not the width of the carpet roll. They're much easier for you to transport and handle than a carpet roll, and you don't need underlay. They're easy to fit because they can be put down without the need for gluing, and loose-laying also means that individual tiles can be removed for cleaning. They're guaranteed for 7 years, and there are over 100 different options of colour and texture.
The tiles are 50cm x 50cm, so you need 4 tiles to cover a square metre. We recommend though, that you allow 10% extra for those awkward areas. For example, if you have a room that's 5m [16'5"] x 4m [13'1"] that's 20 sq metres. Add 10% allowance, and so you should order 22 square metres, which is 88 tiles. If you fancy going for a chequered pattern of 2 colours, then you'd simply order 44 of each.
At the risk of stating the obvious, if you're also decorating the room, do that first to avoid the risk of paint splashes and spills, and remove all furniture from the room if you can. You'll need a metal tape measure, a craft knife (either with plenty of extra blades, or one of the snap-off blade types) and a metal edge such as a metal rule to keep your lines straight when you cut the tiles. Good preparation is the key, and just allow yourself plenty of time.
Find the centre of the room by finding the middle of the length and the width - where the two lines cross lay your first tile. If you start fitting the tiles from the centre, the cut tiles on opposite walls will be the same size and the whole job will look more professional. As long as the tiles are butted up to each other to fit tight between all four walls they won't move.
When you need to cut a tile, mark the tile on the back and then score it by running the knife along the metal rule - cutting away from you.
Finally, when you've finished the job - stand back and admire!