Rooftop dormer observatory with roll-off roof and a 2m*2m opening

hazcam

Prefab dormer construction

sliding roof 1
sliding roof c-beam 1
sliding roof c-beam 2

Prefab dormer placement

sliding-hatch-rooftop-observatory-placement2
sliding-hatch-rooftop-observatory-just-placed

Isolated chamber construction

Isolated chamber construction 1
Isolated chamber construction 2
Isolated chamber construction 3

Roof toothed belt drive

roof-tension
roof belt
roof-motor-connector