Here are some more general tips for getting those pesky stains off your lovely marble fireplace or surround use a soft microfibre cloth to remove surface dust and dirt.
How to remove marble fireplace surround.
Make sure to cap off the chimney before covering over the interior area where the marble fireplace surrounds has been removed.
That will be on the wall with adhesive and need levering off wall gently if u don t want to damage it.
If smoke staining residue or yellowing can still be seen based on how long the smoke has been allowed to permeate the surface you can use mineral spirits or white spirits for our uk friends in equal parts with distilled water and spray on the surface.
First remove the fire the outer brass part should lift off and there should be 4 screws.
Place sticky notes on the wall where the studs are.
Step 2 locate the studs in the wall with an electronic stud finder.
Run the blade of a utility knife along the seam where the fireplace surround meets the wall along both sides and the top.
Use warm not hot water.
You can then go about removing the screws which should start to release the surround from the wall.
Lightly rub the stain with the cloth increasing in pressure if the stain is stubborn.
Wear a face mask safety goggles and gloves if you need to use a chisel and hammer to remove the fire surround.
Thoroughly rinse the marble fireplace surround with distilled water until streak free and wipe with a dry cotton cloth.
Or just attack it with a hammer.
To start removing one of these fireplace surrounds you will have to chip away the plaster around the edge of the mantelpiece.
Removing the old fire surround if the fire surround is screwed to the wall through metal lugs buried in the plaster chip away an inch or so of plaster all around the edge with a cold chisel and club hammer.
This should reveal the lugs holding it to the wall.