How do we fill the space/gap between the new flooring and our stone fireplace?

We have recently installed new hard-wood flooring. To install, the planks have to be tilted then slid it, then lifted to a 45-degree angle, then laid flat. We have a stone fireplace and due to the inconsistency of the curve of the stone, a space/gap was required to be left. How do I full this space/gap so that it looks good? And we can not just fill it with mortar because all the spaces/gaps are not the same size. Some are large and some are very small. Someone please help me..

Public Comments

1. with grout.
2. Grout will work and so will painter's caulk.. I'd go with the caulk, see if you can get it in colors to match the stone or floor, that would set it off nice.
3. Do you know how to use a compass to scribe something to fit against an irregular thing? It may take you a bit to figure it out, but lay a heavy paper all along the gap, pressed up to the stone as far as possible. Using the compass, point against the stone and pencil on the paper, slowly transfer/draw the exact shape of the stone onto the paper. Then figure out he distance from the wood to the stone and transfer the line to the wood in the appropriate distance from the room side. Cut it exactly on the line and you should have pieces of wood that will fit Exactly into the gap and can even be locked into place using the 45 degree angle install. If the locking mechanism is too big, maybe you can file away the lock in whatever area is compromised. If the lock is compromised for most of the length, then cut the lock off and then scribe and cut a piece without the lock.
4. Grout and similar hard type finish type materials are subject to failure due to expansion and contraction of your wood flooring since it moves depending on changes in temperature and/or humidity so I wouldn't recommend it, that is why most manufacturers recommend leaving a gap around the edge of the flooring and not butting it directly up against the walls etc. Now depending on how handy and how many and what types of power tools you have you can make your own transition pieces since none of the commercial ones are likely to be an exact match to your particular situation. I installed the fake wood floor known as Pergo in red oak and have a marble fireplace surround so I went to the local home center and bought real red oak 1x2s which are rectangular and cut a groove into the lower portion so the pergo could slide underneath, I also beveled the edge to 45 degrees so that a blunt square edge wouldn't cause any tripping hazard and the fireplace edge of the 1x2 was left alone in its square shape since it butted up against the square edged marble. In your case the square edge could be cut with a jigsaw to match the irregular shape of the stone. You can always buy some of those kids science project poster boards and trace the outline of the stone and then trace the outline onto the boards so that they match the stone shape. Without knowing what kind of do it yourself stuff you can do its hard to say. If you want to risk it use the grout and just hope it doesn't crumble after a while, if it does you can always replace it. Hope this helps? good luck. Incidentally if you go to a local home center they may be able to offer you a different point of view.