Syntech Bioflex

• High mechanical and abrasion resistance
• High adhesion to surfaces
• Good elasticity
• High chemical resistance to acids, bases and solvents
• Very high tenacity and ease of cleaning and maintenance
• Applicable to heavy thicknesses

Concrete
The surfaces to be coated must be stable, clean and free of substances that can affect the adhesion of the coating. In case of restoration, first use mortars and products from the FLOOR line or the REPAR line suitable for the purpose. Wait for the drying times before applying the next coating. The tensile strength of the support must not be less than 1.5 N/mm². Any existing paintwork, coatings or paints, residues of cement laitance, release agents, greases, silicones, etc. they can be removed mechanically by sanding with a single-brush sander, sandblasting, hydro-sandblasting or chemical removal, treating the support with Deterg A (diluted in water 1:10) left to act until the reaction is complete, then rinsing thoroughly with water. Wait until the floor is dry before proceeding with the application of Syntech Bioflex.

Cracks and fissures
In the case of static cracks, for sealing use the Grout Cable structural grout or mortars from the FLOOR line, or epoxy products such as Syntech Primer EP-W or Syntech AS 21. The sealing of dynamic cracks or cracks larger than > 4-5 mm must be evaluated on site. They can generally be grouted using elastomeric materials or worked as movement joints.

Localized grouting and restoration
Any holes, deficiencies, repairs of portions of concrete can be carried out by applying our mortars from the FLOOR line or the REPAR line. Any small filling of holes and gaps can be carried out by applying Syntech AS 21 epoxy mortar.

Resin coatings
The surfaces to be coated must be stable, clean and free of substances that can affect the adhesion of the coating such as dirt, grease, oil, etc. Sand the surface by mechanical sanding with diamond discs and dust extraction.

Steel
Any welding residues must be removed and the joints sanded. Sandblast to cleanliness level Sa 2½ according to EN ISO 12944-4. The surfaces to be coated must be free from dirt, oil, grease and impurities. Surface roughness degrees RZ >= 50

Primer on concrete and fiberglass
On the adequately prepared support, apply a coat of Syntech Bioflex diluted with Syntech Diluente Sintetico at a maximum rate of 20-25% by weight as a bonding primer, using a brush or medium-haired roller, taking care to saturate the entire surface to be treated. Wait 12 hours before applying the protective anti-waterproofing coating.

Support humidity control
Before installing resin systems and coatings, always check the residual humidity content of the support. Check for the presence of residual humidity using the plastic sheet method according to the ASTM D 4263 standard: fix a heavy polyethylene sheet with a size of at least 45x45 cm to the support with adhesive tape. 24 hours after its installation, lift the sheet and check for signs of humidity.
If testing with a carbide hygrometer, the moisture content of the substrate must be < 4% by weight.
In case of residual humidity, apply two or more layers of Syntech Pavidamp three-component epoxy primer.

Application temperature (air and support) Minimum +10°C _ Maximum + 35°C. The support must have a temperature at least +3°C higher than the dew point to reduce the risk of condensation or bleaching of the finish. Ambient relative humidity Minimum 35% _ Maximum 80%.

Mixing
Thoroughly homogenize the individual components inside their container for a couple of minutes by manual or mechanized stirring, taking care to use a clean tool free of potentially polluting substances. Combine the two components in the indicated mixing ratio. Add component B (hardener) to component A (base) and mix thoroughly until the product is completely homogenized. It is advisable to start mixing briefly with an electric drill at low speed and then intensify the stirring up to a maximum of 300-400 rpm. Avoid mixing times that are too long in order to limit the quantity of air incorporated into the product.

Application
The product can be applied by spray, trowel or roller. On the adequately prepared support, apply the product in two or more coats, respecting the indicated consumption and recoating times. It is advisable to prepare a quantity of product no greater than that which can be applied during the useful life of the material. High temperatures accelerate hardening and reduce the use time of the prepared material.