If your terrace canopy's frame and substructure are made of aluminum or steel, simply clean the material using water and a mild detergent. Avoid using cleaning products that have a scouring or abrasive effect, since these can attack the coating and the material.
When cleaning glass roofs, you should use as much clean water as possible, which you can enrich with a little neutral detergent.
Avoid using acids, alkalis, or coarse cleaning products such as abrasive cleaners, steel wool, or blades, since these will damage the glass roof. Cleaners containing solvents (such as benzine or thinners) are also unsuitable. Also avoid using pressure washers, since they can damage seals, causing the glass roof to leak.
Alternatively, you can hire a STOBAG specialist partner to clean your system regularly. More about cleaning sun blinds.