If painter claims they can paint a terracotta roof then ask for manufacturers data sheet and double check the product is suitable and guaranteed for terracotta coverage.
Painting terracotta roof tiles.
Even if you paint the top of the tile moisture can be sucked in from underneath and cause the paint to flake off.
I am not sure that painting terracotta roof tile is the best idea.
The pros and cons of painting terracotta roof tiles november 4 2016.
Any one promoting the re glazing sealing painting of terracotta roofing tiles should be avoided.
Protect nearby surfaces with painter s masking tape and plastic sheeting.
Used in conjunction with any of the nutech paint top coat roof finishes such as nxt cool zone tileflex flexi shield and nuflex nutech paint can provide long term durability with guaranteed performance.
Since you cannot paint terracotta roof tiles here is the terracotta restoration process.
How to paint on terracotta tiles step 1.
Terracotta roof tiles are created from clay and fired with a glaze to provide a long lasting protective finish that contains an attractive sheen.
Also to mention that any product guarantee will be lost.
Use a nylon scrub brush or sturdy mop.
Scrub the tile with a mixture of 1 part white vinegar to 4 parts water or use a mild grease fighting dishwashing liquid and water.
Rinse with clean water.
Nutech elite terracotta primer has been specifically formulated to provide superior adhesion and long term performance over properly prepared unglazed glazed and vitrified terracotta roof tiles.
Once the firing is complete these tiles will withstand years of weather exposure when professionals properly install them on a roof.
I was doing research as i was getting mixed answers and learned that terracotta is very porous.
Terracotta roof tiles which have glazing evident should not be sealed.
Apply masonry primer to the terracotta tiles.
Clean the surface with a trisodium phosphate tsp cleaning solution and a rag.
The pros and cons of painting terracotta roof tiles.