System components

Overkote system

Can sizes: 7kg 21kg

Surface primer

Tin sizes: 4kg 10kg 20kg

Tools & accessories

Application tools

Special chemical resistant rollers, brushes and buckets.


Our compatible multi-surface roofing sealant.


The system is available in dark grey with other colours available on request.

Iron Grey


Curing time

The curing times stated for Overkote are approximate and vary due to different onsite conditions like the percentage of relative humidity in the air or direct sunlight on the application area.

It is recommended that the user check the curing characteristics of a small quantity of Overkote under actual operating conditions prior to use. For more information talk to one of the technical services team.


Touch dry


Full cure


Due to Overkote’s amazing flexibility and adhesion properties, it can be applied directly to a wide range of existing roof coverings.

  • Dormers
  • Porches
  • Bays & conservatories
  • Extensions
  • Green roofs
  • Balconies
  • Garage roofs
  • Lead replacement

Thermal expansion

Overkote has incredible flexibility and can withstand normal building movement and thermal expansion and contraction.

The eFlex technology enhances our product’s flexibility without adding any post-production additives which can lead to long-term problems with the life cycle of the roof membrane.

Elongation at break


Overkote can also be applied directly to existing roof coverings allowing for low-cost refurbishments with minimum disturbance.

A range of system primers is required to seal the substrate and extend product coverage. Specified primers vary dependent on substrate type & condition. Please refer to our substrate guide for a detailed overview of the primers available.

  • Aluminium
  • Asbestos
  • Asphalt
  • Bitumen
  • Brickwork
  • Concrete
  • Corroded galvanising
  • Corroded mild steel
  • Felt
  • Galvanising
  • GRP
  • Insulation board
  • Lead
  • Mild steel
  • PVC single ply
  • Slate and tiles