Granite Hearth

Get a concrete colour (black/grey) and dye some mortar mix.

Sounds exactly like the hearth we laid 3 weeks ago, only ours is slate. I filled the gap with mortar (it's quite a big gap, about 20mm), then finished off with charcoal black tile grout. This gives a smoother finish than mortar, and is totally matt black. B&Q stock it, as do bigger tile shops.

If you talk to a granite supplier (stonemason), they should be able to recommend or supply and epoxy filler. I have this between a worktop and an upstand and it's effectively invisible.

Check about heat resistance for this application, though.

.andy

To email, substitute .nospam with .gl

Thanks all I went for the easy option in the end, found some midnight black grout at B'n'Q after searchng for the charcoal one suggested, this was ready mixed and has done the job a treat. Lets hope it withstands some heat!

Cheers

Richard