Hi, I am DIY enthusiast and for this particular project I have decided to get myself registered on a forum before going any further. I have an electric fire and laminated wood surround, pretty basic model. What I would like to replace it with will be a little more substantial, limestone fire surround and hearth weighing around 250kg. Herein is where I require advice before even considering purchasing. My lounge floor has a crawl space underneath so is basically a suspended floor. For such a fireplace should the floor be reinforced in some way if installing such a permanent load? Any other tips for such a project also appreciated.