What You'll Need:
- Bucket
- Mop or floorcloth
- Broom or vacuum cleaner
- Soft Rags
- Wax
- Stone Cleaner
Sweep or vacuum the floor to remove dust and dirt. Then use a mop or a dampened soft floorcloth to remove any residue. You may also wish to add some cleanser to the water. However, make sure to use a neutral type which is suitable for slate tiles. Acidic based cleansers are not suitable for slate tiles.
Step 2 - Apply Stone Sealer
Once the floor has been cleaned and allowed to dry, apply some stone sealer to the tiles.
Step 3 - Apply Wax
Next, apply a coating of wax. Both commercial and household types of wax can work well. Place a small amount of wax onto a soft rag, and then start rubbing into the slate tiles. Once you have finished, buff the floor a second time using a clean rag. This will help to bring out a better result and a more polished, shiny look.
Source: www.DoItYourself.com