Yes straight on top. You can use Flexibond Adhesive to stick all over if required.
2m x 1m will be enough to cover your balcony. Available in all ranges
Yes the grass will come on a 4m roll. Length will be 7m in one piece. Cardboard core to support roll in transport and wrapped in clear plastic.
Yes this will be in a roll as one piece 4m wide by 5m long.
All our grass products with the exception of our Classic Range have a slight pile direction along the length of the roll. This is most noticeable when the grass is first unrolled. Once the grass has been installed and brushed it is harder to notice but still need to be taken into consideration when measuring and planning.
If sections of grass are not laid in the same direction it will create a shade difference that will always look a slightly different colour. Please see our measuring & installation guide to prevent this from happening.