Overkote installation overview

How to apply the Overkote system


The Overkote high-performance liquid applied roofing system meets most budgets and performance requirements, with a 10-year Basecare guarantee

Main system components are:

  • Primers - These are required to seal the substrate and extend product coverage. Specified primers vary dependent upon substrate type & condition.
  • Overkote - Quick curing; a single component, cold-applied hybrid polyurethane resin that cures by chemical reaction with the moisture from the air. UV stable.

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

Overkote is applied at the required coverage rate dependent upon the system, coverage rates may vary on the different substrates.


Typical coverage rates

All coverage rates are quoted as a minimum

Substrate condition: Smooth

Primer As required
Overkote 1 kg per m²
Reinforcement Not required

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. The 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.