deeb - a bit more info please; ground floor or upper floor, solid floor (concrete) or suspended timber, joist direction. Or are you thinking of just laying a slab (something like slate maybe) over floor? Also, will you be using the fireplace for a 'real' fire or just a decorative jobby.
If you need to find a tradesperson to get your job done, please try our local search below,
or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Please select a service and enter a location to continue...
Are you a trade or supplier? You can create your listing free at DIYnot Local