To see if your slate tile needs sealing pour a bit of water on its surface.
How to seal slate roof tiles.
Like most other natural stones slate tile flooring requires sealing to aid in water repellency and prevent staining and scratching and sealer should be applied on a yearly basis.
How to apply sealant on slate tile.
If the water leaves a darkened spot for longer than 10 minutes it needs sealer.
Dip a rope cotton mop on the solution and wipe it around the floor.
Shake or stir well.
Use a lint free cotton cloth an old t shirt works best apply a little of the sealer on to the cloth.
If the slate flooring tiles have been installed for quite some time and you have decided to seal it now follow these cleaning steps.
You should have reinforced the frame of the roof earlier before.
Repeat until the whole surface is covered.
Remove all grout and mortar.
Position the first.
Test for desired results in an inconspicuous area before continuing the application.
This is on its own a major job that can take days and require special tools.
Prep the slate for sealing.
Mask off any adjacent surfaces that need to be protected during the application.
Rub onto the surface of the slate in small circles.
Take a spare piece of slate to a home store and discuss sealers with a knowledgeable salesperson.
Once you have covered the surface rub off any excess straight away with a clean cloth and allow to dry naturally.
Remove old roofing if applicable.
Repair and reinforce the roof if applicable.
Mix water and all around detergent to make a solution.
Hold the sprayer nozzle 12 to 18 inches away from the surface of the tiles for best results.
Next prepare an oxygen bleach solution.
Clean the slate thoroughly and allow it to dry completely.
Read all instructions and tips before the application so that you can plan the application correctly.