Fibrecoat installation overview

How to apply the Fibrecoat advanced fibreglass roofing system


The Fibrecoat high performance liquid applied roofing system meets most budgets and performance requirements, with a 25 year expected durability.

Main system components are:

  • Primers - These are required to seal the substrate and extend product coverage. Specified primers vary dependent upon substrate type & condition. Please refer to the Ancillary product section. for a detailed overview on primers available.
  • Fibrecoat - Quick curing; a single component, semi thixotropic cold applied polyurethane resin that cures by chemical reaction with the moisture from the air. UV and outdoor stable.

Prior to the Fibrecoat installation the roof must be fully prepared, cleaned and primed if required in accordance with Allbase recommendations.

Fibrecoat base coat (first layer) is applied at the required coverage rate dependent upon the system. Is reinforced with 225 gm fibreglass reinforcement that is fully embedded into the wet base coat. Fibrecoat (second layer) is then applied over the cured base coat, coverage rates vary upon the system required.

Protective over coats are available for walk ways, maintenance routes or when a colour stable finish is required.

Allbase systems are available as a roof overlay (cold roof), a warm roof or as an inverted roof installation where compliance to current building regulations is required. All installations are cold applied. This eliminates the need for any gas torches or bitumen boilers thus reducing the risk to health and safety.


Typical coverage rates

All coverage rates are quoted as a minimum

Substrate condition: Smooth

Primer As required
Fibrecoat Base 1 kg per m²
Reinforcement 225gm Fibrecoat reinforcement mat
Second layer (Fibrecoat) 1 kg per m²

Substrate condition: Rough

Primer As required
Fibrecoat Base 1.25 kg per m²
Reinforcement 225gm Fibrecoat reinforcement mat
Second layer (Fibrecoat) 1 kg per m²

Pre-installation notes

Before works commence, the installing roofing contractor should ensure that the surfaces to receive the new roofing system are acceptable and comply with Allbase recommendations and that the application of the specified coating conforms to the requirements of the specification.

Retained components from the existing structure must be sound and capable of accepting the imposed loading of the new roofing system and associated installation procedures.

Surfaces must be clean and dry, free from any organics, dust and any other loose materials. New concrete must be well-cured. Defects and sharp projections should be removed or made good and the entire surface must be compatible with the proposed coating system.

Works are to be organised to maintain the waterproofing integrity of the roofing system and to ensure that the finished roof areas are adequately protected from damage by subsequent building operations.

Do not undertake work in wet conditions, the temperature has to be 3 degrees higher than the dew point. The installer must assess the temperature on the system application day. Application of the system should not take place when wet conditions prevail, or when condensation is present or will be present on the substrate during application. Unless effective temporary covering is provided, suspend work in severe or continuously wet weather or where wind speeds exceed 7m/s. Temperature should always be above 5°C and rising.

For specific specified materials and installation requirements please refer to the Allbase Technical Services specification and associated build up drawings and specified detail drawings.