xoroniox

It is a 6year old terra cotta clay tile roof looks weathered, grey/dirty. What are the pros/cons to painting the roof vs pressure washing? Thanks

Squrtgun

Before slapping paint on a tile roof,why not contact someone who can clean them?Often times a no pressure cleaning method is alll that is neeeded to give a roof that refreshed look.

Ed the Roofer

If in fact you are speaking of a true clay tile, and re-coloring is required, then contact the manufacturer for advice. Ludowici comes to mind, which I believe is a subsidiary company of Certainteed.

If it is the more commonly installed tile material, concrete tile, then a concrete/cement "Stain" would be preferable. Once again, if you can determine the manufacturer, then contact them.

Also, if you do find out who the manufacturer is, check and see what their warranty coverage, if any, is for coloration defects. They may be responsible for the re-coating of the materials for you.

Even if it is just a fungi type growth, you should still contact the manufacturer or a concrete/cement or clay manufacturer to see what types of cleaning agents may be used without adding to further color aesthetic concerns.

Ed