For the best waterproofing results, apply Liquid Rubber to a clean, dry roof. Remove loose or peeling coatings, silicone, rust scale, and other contaminants first. This ensures maximum adhesion and long term leak protection for your roof.

Usually, no. In most projects you only need to seal the problem areas: rusty patches, seams and joints, around skylights and vents, laps, screws and penetrations, and any spots where water can pond. Targeting these areas stops leaks while saving time and materials. In rare cases, such as when large sections are rusted or existing coatings are failing everywhere, a full roof application can be helpful. Make sure the substrate is still structurally sound because severely rusted or weakened roofs may require repair or replacement. Where the metal is sound, a full coat helps encapsulate the rust and can extend the roof’s lifespan.

Application is simple. Use a paintbrush, roller (included in our kits), or a spray machine for larger roofs. Basic safety gear such as gloves is recommended, and keep a suitable cleaner handy for spills and tool cleanup.

Use a power washer to clean the surface. The surface must be clean, dry, and free of loose paint, rust, and other contaminants.

The Rapid Cure Spray is only used for the Waterproof Sealant to instantly set the product and protect it from approaching rain. It is fully optional but we recommend using it for best results.

For best results, apply Liquid Rubber when the weather is dry and mild. Avoid application if rain, dew, or strong wind is expected within 24 hours. This helps your new roof coating cure properly and prevents moisture from interfering with adhesion.

No. The thermal coating is optional. It adds strong UV protection and reflects heat, which helps the roof stay cooler and can extend its life. If you want waterproofing only, untick the Thermal Coating and the primer or sealer in the kit builder.

Choose any colour you like. For performance, brighter colours work best. White gives the strongest UV reflection and heat protection. Dark colours reflect less UV and will run warmer.

The Waterproof Sealant appears brown when wet but turns black when fully cured. If you want a coloured finish, we recommend applying a primer on top of the cured sealant, followed by a top coat in your chosen colour. This approach ensures both waterproofing protection and creates enhanced UV resistance and provides longevity.

Allow each coat of Liquid Rubber waterproof sealant to cure for 12 to 24 hours before recoating (full cure in 72h - depending on the weather). Primer coats typically dry in 2 to 4 hours. For the thermal coating, wait 12 hours between coats for best performance.

Yes. It is suitable for common Australian roof types including corrugated iron or Colorbond, Trimdek or Spandek, Klip Lok or Snaplock, concrete, fibreglass, PVC, EPDM rubber, and TPO.

Apply in dry, mild weather. Avoid application if rain, dew, or strong winds are expected within 24 hours. This helps the coating cure properly and prevents moisture from affecting adhesion.

We ship Australia wide. Orders typically arrive within 3 to 8 business days. Local pickup is also available at 1 Conway Court, Nerang, Gold Coast, QLD 4211.

Yes, it is safe. The Liquid RubberWaterproof Sealant is potable water certified. For the Thermal Coating, If you're collecting rainwater for drinking purposes, disconnect the downpipes for the first downpour to allow the system to wash thoroughly before reconnecting. Alternatively, once the thermal coating has fully cured, you can power wash the surface and then reconnect the downpipes. Liquid Rubber DIY products are safe for rainwater collection and will not compromise water quality after the recommended washing process is complete.

We spray Liquid Rubber DIY waterproof sealant with a Graco Mark V airless spray machine. For the thermal coating we use a VEVOR airless spray machine.