TERRA COTTA
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		PROTECTION

Protection of walls, doors and next rooms, as well as moving of furnitures have to be done before any works. NET AZUR TRAITEMENT can charge for these works.

		SCOURING

For brand new terra cotta, a buffered acid solution is used to get rid of rests of plaster, cement and soft roe.
A neutralisation followed by several rinsings complete this stage!

Solvented scouring is necessary for terra cotta which have already had one or several treatments: it will get rid of old waxes and “bouche-pores”. The type of scouring will depend on layers of waxes to remove: “soaking scouring” can be necessary. It consists in “drowning” tiles in order to soften, as deeper as possible, the layers of old waxes. Drying time will obviously be longer!

		DRYING

Drying period depends on hygrometry, and the season when scouing takes place. In summer, drying time is shorter than in winter. The region is also a crucial role :  Northern France is wetter than Southern France. That's why a period from 2 to 10 days is advocated!
Make sure that no one walks on recently scoured terra cotta : they are very weak, without any protections. The smallest mark of oil or solvent would be unavoidable!
 



  THE DIFFERENT TREATMENTS



                                                 

                                                                                                                                                                                                                                                                 
THE OLD TREATMENTS 
                                                                                           
           WARM WAX 

Natural wax based, the treatment is very bright, smells good, and gives warm colours of old patina. But it is not long-lasting and UV-resistant. What a tough work for the hostess who has to maintain it!

		LINSEED OIL

Linseed oil and turpentine essence were very used for a time. Sticky at the beginning, tiles can become brown, indeed black, depending on accumulated dirt with the years. When terra cotta has been gorged with linseed oil or other oil and then you want to treat it, it will never become light again! 
A half-tone lighter will be, at the best, gained!


                                      THE TREATMENTS THAT WE USE

		EPOXY   RESINS

Aquous resins give back colours of yesteryear, warm similar to previous treatments, with also an incredible long-lasting resistance to house marks, such as oil, sodas, lemon, vinegar, wine, etc.
With a range from mat to bright finish, you will have the perfect illusion of patina floors without having the drawbacks!
Polyurethan resins have the same protection properties as aqueous resins except that they have lighter tones. Then, the chosen finish is laid on.

		AQUEOUS ACRYLIC TREATMENTS

Acrylic "bouche-pores" are very efficient and resistant and allow the treatment to keep the original light colour of terra cotta. A range of appearance from mat to ultra-bright is possible. It will be recovered by a very resistant synthetic wax in the case of a bright finish!

		OUTSIDE TREATMENTS

Before starting an outside treatment, terra cotta has to be cleaned, that is to say without any moulds, bacteria or mushrooms!
First, a powerful anti-mould is spread out, which will kill all of the bacteria and mushrooms, and left for 10 days. Then, scouring is carried out. 
A new preventive spraying of anti-mould is laid on. After this stage, an outside treatment is conceivable.

Several types of outside treatments can be carried out, as herebelow:

		Hydrophobic treatment

Solvented product, protects terra cotta from water, but also oil marks. It is a non-filming product, with a
mat and colourless finish.

		Hydrophobic/Oleophobic treatment

 With a catalyst, it protects from water and  house marks. It is also a non-filming product and a colour
brightener!
Laying a hydrophobic product against the penetration and rising of water is strongly recommended! It prevents the absorption of humidity but also the appearence of white efflorescences (saltpetre) and avoids capillarity phenomenon. This product is colourless, non-filming and allows the internal humidity to carry on draining off!

There is also an efficient aqueous treatment, but it needs to be regularly renewed. It is not UV-resistant.

		ANTI-SALTPETRE TREATMENT

Salpetre is the scourge of numerous properties which have 
been victims of infiltration water, flooding or constant humidity, 
indeed underground humidity.
First, a measure of hygrometry has to be performed before any works! 
A first dry-souring is done. Then, a specific scouring perfected by our 
professionals is carried out to limit and reduce the formation of 
saltpetre (cf TECHNICAL). Getting rid of saltpetre is very difficult : several meticulous rinsings with purified water ( nitrates free) is necessary.
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