Ancor Plast Fibro

Fiber-reinforced elastomeric liquid membrane

One-component elastomeric liquid membrane, made by synthetic resins in water dispersion and alkali resistant microfibers, ideal for indoor and outdoor as waterproofing substrate, characterized by excellent filling power and high support adhesion. Its particular formula enhances adhesion of subsequent treatments or tiling.


Fields of application

Applicable on:

  • External walls subject to atmospheric agents
  • Plaster, concrete, prefabricated panels (properly prepared)
  • Plasterboard (properly prepared)
  • Terraces and balconies before tiling or application of protective coats
  • Showers or bathtubs before finishing
Support preparation

Substrate must be perfectly dry and cured. Surfaces must be perfectly clean , dry, free from dust and incoherent parts; the support must be structurally stable, free from efflorescences. Remove any failing, detaching  part or previous paint. In the presence of oily or greasy substances, remove them meticulously. On supports based on water bonding agents wait at least 28 days before application . Absorbent or crumbling supports must be treated in advance with a water based acrylic insulant Isoplast acrilico or solvent based Isoslov. To maintain the effectiveness of the waterproofing system it is necessary to spot any discontinued point (such as floor/wall angles) and treat them in advance using elastic bands for joints and angles or by creating perimetral slips.


The product is ready to use. Mix briefly before usage.

Apply two coatings of Ancoral Plast Fibro using a steel spatula, waiting at least 12 hours between coatings. To realize reinforced coatings, it is recommended to use an alkali resistant fiberglass mesh (60-80g/M2).

To apply on exposed horizontal surfaces (without subsequent tiling), apply an elastic protective coating in advance, such as Chiragum Plus. On particularly weather exposed vertical surfaces, proceed with the elastomeric paint Flexo.


Apply between +5°C and +35°C. Do not apply in risk of rain or windy days. Protect the surfaces from frost and rain until cured. Protect from excessively rapid desiccation. Being a substrate product, it is necessary apply a finishing product afterwards. Do not use for prolonged water contact.

Technical Data


steel trowel


kg 25


thixotropic paste


grey - red


ready to use


approx. 3 kg/sqm per two coats


approx. 1.6 kg/l

Second layer application

afterapprox. 12 hr (25°C)

Application temperature

from +5°C to +35°C

Tools cleaning

water soon after use


< 140 g/l (2010) - Cat. i: One-pack performance coatings - water-base (Dir. 2004/42/CE)


33 drums of L 14

Data contained in technical data sheets refer to laboratory tests. Indications and methods may be subject to change over time, depending on any technological and productive improvements. Products application takes place out of our control, as we cannot directly intervene on the conditions of the construction sites and on the execution of the works. All indications are general and do not bind our company in any way and therefore the responsibility falls exclusively on customer. We recommend a preventive test of the product in order to verify the suitability in relation to its particular use. Technical service is available to provide additional information.

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surface to be covered in square meters

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