Epoxy Base Coat
for FRP Systems


CARBO FONDO is a two component product consisting of:

  • component A: a mixture of liquid epoxy prepolymers and additives;
  • component B: copolymerization amine.


Once fully cured, the material is transparent, yellowish and characterized by both high adhesion properties to any type of building substrate and high fluidity.

Usage field

CARBO FONDO is used to impregnate the substrates of surfaces scheduled to receive CARBOFIL treatment in the realization of both "VETROFIL" and "CARBOFIL" FRP systems.


Three twelve kilograms (A+B)


Epoxy Base Coat
for FRP Systems


Surface Preparation:

  • the substrate must be carefully checked to ensure it is a suitable and structurally sound base and, depending on the existing surface conditions, the type of preparation to be done must be chosen.
  • if necessary proceed with chipping, high-pressure washing, scarifying or sanding the surface to be treated in order to remove all loose parts or otherwise remove any dirt, oil, grease etc.. ;
  • restore with specifically designed products.



Specific Preparation:

  • apply a coat of CARBO FONDO to the surface to be treated;
  • within minutes or at most within 24 hours, apply a coat of CARBO STUCCO with a spatula if the surface requires a levelling skim coat;
  • proceed with the laying of either CARBOFILL or VETROFIL and impregnate until saturation with CARBO BASE.



Product Preparation:

  • pour CARBO FONDO component B into component A and stir for approx. 1÷2 minutes with a helical blade mixer;
  • the blade must be clean and of adequate size so as to be completely and thoroughly immersed in the liquid;
  • stir up slowly so as not to incorporate air: the mixture immediately after the addition of the component B becomes opalescent and then it turns transparent again;
  • stir again for a few seconds and apply as soon as possible.
  • The amount of product (A+B) to be prepared must be calibrated each time according to room temperature, in order to be able to use it completely before pot life expires.
  • In any case, the amount of component A and component B shall be weighed with a scale.





Epoxy Base Coat
for FRP Systems

Average Consumption

Coverage: approximately 0.2 kg/m2.


Epoxy Base Coat
for FRP Systems


Bulk Density, UNI 8310


1.03 ± 0.05

Pot-Life, UNI EN ISO 9514


20 ± 5

Superficial Drying (3 mm), UNI 8904


7 ± 2

Curing Minimum Time


> 7

Application Temperature


from +7 to +35

Tensile Break Strength, ISO 527


48 ± 10

Flexural Load, ISO 178


84 ± 15

Elongation at Break (film), ISO 527


2.7 ± 0.6

Compression Load, ASTM D 695


77 ± 10

UV Resistance and Condensate, ASTM D 4329


> 4000

Adhesion to Concrete (pull-off test), ASTM D 4541


> 3,5

Hardness (Shore D) ASTM D 2240


> 77

Ratio A : B

2 : 1

Note: testing methods are in accordance with the standards referred to on the table. 


Epoxy Base Coat
for FRP Systems

Warning and informations
  • In cold weather (8÷16°C) the product exhibits a higher viscosity and the elimination of air bubbles trapped inside during mixing occurs slowly.
  • In hot weather (26÷30°C) the reaction speed increases and the system can reach the gel phase before releasing the air bubbles.
  • Refer to the Material Safety Data Sheet (MSDS) before use.