How to Clean a Marble Tombstone

Cleaning a Marble Tombstone. 

First always remember to keep the tombstone that you are working on constantly wet with clean water.  We prefer to use a brand new weed sprayer to apply the water. 
The cleaning solution we also apply with a weed sprayer;  it is an easy effective way to apply the cleaner. 
First wet the area with clean water that you are going to clean.  The apply the cleaning mixture and scrub with a nylon brush, never metal; preferably white bristle, with small circular motions.  Rinse, Scrub, Rinse, Scrub. Rinse Rinse; leave no residue.
 
Cleaning mixture is Ammonia and Water,  which is a 1 to 4 mixture;  one part ammonia to four parts water.
We clean the base from bottom to top, again keeping it always wet and well rinsed.  Do not let the stone dry as you work.   

If this first scrubbing does not give the desired results, then we use a mixture of Orvus and water scrubbing; this is not applied in a weed sprayer, but from a bucket. As with all cleaning, you need to rinse and rinse and leave not residue.   

To restore the marble to it's polished glory; Nylox brushes on a drill with the Ammonia mixture can be used.  These should only be used by skilled workers that know what they are doing, as damaging the stone by unskilled workers could result.