A local charity wants to fix a sign over the entrance to a building (not their own), for a one-day event.
The sign will be about 1.5m x 0.3m - either a PVC banner or a laminated paper print. But how to fix it? There are no anchor-points for ropes, and no suitable windows.
Is there any heavy-duty equivalent to Blu-Tac which would take the necessary weight, not fall off it rains, but come away cleanly from the brickwork at the end of the day?
Any other ideas?
John Geddes Derbyshire