Artificial Green Wall - Foam Wall and Plaster Wall Installation Kit - 50 pieces These handy plastic tapering screws are suitable for installing artificial vertical gardens onto foam or plaster walls. The installation screws are not designed to hold substantial weight, and may need in foam walls an application of a strong adhesive (each screw prior to inserting into foam may need to be dipped in a suitable adhesive) - many foam walls however, may not require this, but low density foam may benefit from the use of an adhesive. In attaching to plaster walls you simply screw these in, whilst ensuring to grip the plastic backing of the green wall panel. You will require a screw driver or drill bit to install the foam / plaster plug. Please feel free to contact us for further advice.