You can apply a glaze to your terracotta tiles but this will alter the finish and feel of the tile.
How to clean terracotta roof tiles.
Remove loose debris tree leaves dirt etc from the roof surface.
The concrete roof surface can be either dry or damp.
Clean the roof tiles with a high pressure water spray.
Test the porosity of your terracotta tiles.
It adds curb appeal repels water and just looks pretty darn good.
Sweep regularly and mop with a mild household detergent preferably a non ionic detergent designed to clean greasy dirt without leaving residue on the tile s surface.
Sealed terracotta has a protective coating usually added after installation that makes it more impervious to stains and easier to clean.
Terracotta roof tiles are typically cleaned to have the visible moss and lichen removed.
If after 15 minutes the water has soaked into the floor the tiles will need to be impregnated with boiled linseed.
Clay tiles must be dry to avoid slipping check local governing body regulations for discharge of wash water into the storm water system.
Give the anti moss spray time to do its job and then use the high pressure cleaner to wash the tiles down.
Test your terracotta tiles for porosity by placing water in the middle of a tile.
This will remove all the moss and lichen as well as any built up dirt.
Moss and lichen is attracted to the roof tiles surface and if left will continue to grow and most likely restrict the flow of rain water over the tiles surface into the roofs.
Cleaning terracotta tiles is not as difficult a task as you might assume.
And while you might occasionally need to replace a roof tile there are worse things that can infect the beauty of your roof.
Before you climb onto your roof establish a plan of action.
A clean roof is a thing of beauty.
As you did in the previous step walk backwards when you are spraying away from the wet tiles and onto the dry.
The main goal of cleaning your terracotta roof tiles is to not only blast away the grime grease and mould from the tiles but to also prevent further mould growth.
Their natural rich amber color is sought by homeowners who like a warm homey feel.
Identify where you will start to clean.
Terracotta tiles are made from natural clay which is a naturally moist material.
Terracotta tiles are a popular form of tile used today in homes across the country.