Unfortunately there is not a listed coverage rate for the product, the substrate and type of graffiti affect the quantity required.

Unfortunately no this product is not suitable for use on tarmac. 

No, for this application to a plastic substrate we would recommend the use of Hydron AG2 Graffiti Remover.

We would also suggest trying it on a small area prior to full application.

This will remove graffiti from both porous and non-porous substrates - once applied and left for 10minutes it should be removed with a pressure washer. Should further applications be required then the substrate must be left to dry 1st.

Hydron AG4 Graffiti Remover will remove aerosol paint from porous substrates such as brickwork and concrete. Best solution would be to apply AG4 liberally to the painted area, leave 10 minutes and then remove with a pressure washer. If further applications are needed, the surface would need to be left to dry before application.

Assuming the boards are a laminate or plastic we would recommend Hydron AG2 Graffiti Remover for this application.

This is a solvent based product containing biodegradable detergents that comply with all goverment legislation but it is not safe for aquatec life.

Unfortunately we do not have a product to recommend to remove graffiti from timber.

Hydron AG4 Graffiti Remover can be used on sandstone, but for use  on a patio we would recommend testing on a small area prior to full application, due to the porousity of the substate it is possible that during the process of attempting removal the paint may penetrate deeper.

If successful, Hydron SL1 Shadow Lifter may also be required.

Thank you for the enquiry, unfortunately we do not have a product recommend for this application.

For non porous surfaces such as painted substrates, tiles, glass and metalwork we would recommend Hydron AG3 Graffiti Remover.

There is a risk that this may also bite into any existing painted finish, so careful application is required.