Roof installation is calculated individually, the price is formed from many stages. This is an engineering calculation of wind loads, development of a project, execution of a structure, a signboard with light or with external illumination by floodlights or without light.
The illumination can be realized as gas tubes made of lead glass, charged with argon with the addition of neon.
There is also a more effective way to highlight ads.
LEDs are reliable and not whimsical in operation than Gas - discharge lamps, very fragile and expensive to manufacture
Diodes withstand free fall shock.
The number of volumetric or flat elements is also important.
The height and complexity of installation work is taken into account, whether climbers or special equipment are needed.