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Our range of GilsoFlex ™ Roof Sealer and Paint is available in three pack sizes:

We Offer
GilsoFlex ™ :- in either 4 litre, 10 litre or 20 litre containers.
We also supply a suitable thinner for spraying and clean-up in a 4 litre container.

Description and General Information

GilsoFlex ™ is a New Zealand manufactured dense black Bituminous/Gilsonite co-polymer, solvent / water emulsion based sealer and paint developed primarily for New Zealand outdoor conditions.
GilsoFlex ™ is ideally suited for sealing and painting of exposed metal roofs, cement tile roofs and steel structures. It is compatible and suitable to be used on Decramastic and Butynol roofs.
GilsoFlex ™ can also be used to seal and water proof timber, ply wood, brick and block work, under carpet concrete floors, Vehicle undercarriage protection etc.

Because of its disinfecting effect, it will retard the growth of moss or lichen. Substrate surface preparation requirements are minimal as GilsoFlex ™ can be painted straight over minor surface rust.

Roof requires one coat only and 4 Litres will cover approximately 12 to 32 Square Meters, depending on roof surface thus one (1) Litre will cover approximately 3 to 8 Square Meters.

GilsoFlex ™ is intended primarily for surface application by brushing, rolling or airless spraying.

A re-coat might be required after 6 to 8 years.

The colour is a deep mat black when fully cured. Once fully cured it can be painted over to change the colour to your choice if required.

  • GilsoFlex ™ is a Bitumen/Gilsonite sealer and paint combined in one product without the need for a primer undercoat.
  • GilsoFlex ™ is a flexible coating and will not break down due to distortion and movement, caused by weather exposure.
  • GilsoFlex ™ is non-corrosive to metals and can be painted directly over bare steel, galvanised, powder coated, minor surface rust or previously painted steel, with minimum surface preparation requirements.
  • GilsoFlex ™ is suitable on metal and concrete tile roofs. It can also be used to seal concrete brick and block work, plywood and other timber. Can be used on other structures to seal or paint the surface.
  • Drinking water collected from roofs coated with GilsoFlex ™ is save to consumes


Please select a Product for more Information or to Purchase
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0.5 litre GilsoFlex Thinner 1 litre GilsoFlex Thinner 4 litre GilsoFlex Thinner
GilsoFlex 0.5 litre - Spraying Thinner
Our Price: NZ$10.80 Inc GST
GilsoFlex 1 litre - Spraying Thinner
Our Price: NZ$16.20 Inc GST
GilsoFlex 4 litre - Spraying Thinner
Our Price: NZ$36.69 Inc GST
0.5 Litre GilsoFlex ™ Roof Sealer & Paint Thinner 1 Litre GilsoFlex ™ Roof Sealer & Paint Thinner 4 Litre GilsoFlex ™ Roof Sealer & Paint Thinner
4 litre GilsoFlex 10 litre GilsoFlex 20 litre GilsoFlex
GilsoFlex 4 litre
Our Price: NZ$56.82 Inc GST
GilsoFlex 10 litre
Our Price: NZ$130.71 Inc GST
GilsoFlex 20 litre
Our Price: NZ$242.17 Inc GST
4 Litre Roof Sealer & Paint 10 Litre Roof Sealer & Paint 20 Litre Roof Sealer & Paint