5mm diameter holes are drilled through the sign. The holes are countersunk so the head of the screw is slightly recessed into the sign. Brass or stainless steel screws and suitably sized wall plugs are provided with your order.
Most customers order signs without holes if they're cementing the sign into an alcove in the wall or resting it on a hedge/against an upright etc. DO NOT attempt to glue slate signs directly onto walls using adhesive. They're very likely to fall & break!
For more information about fixings, you can download our "Fixing & Maintenance Guide" on our Information page.