Here are some detaisl of the roof on the inside. As you can see from the second picture you can see daylight through the gaps between the woodwork and the guttering. This will not keep the water out. If you look closely the wood work is rotting st the ends there moisture as come in.
The corrigation presents the same issue with leaving gaps where the roofing material meets the gutter. This is a huge issue considering the roof of the other garage is draining water straight towards these gaps.
This is the drainage system inside the garage. The guttering is visible inside one of the garages. The pipes run down inside the building as well. This presents problems of over flow and the impact it will have on the interior of the building.