View looking down onto mixer, note area is secured by temporary fencing

Old roof coverings are stripped off, and sheathing felt is laid as an isolating membrane

Felt is lapped to form a continuous membrane

Felt is rolled out in stages to prevent wind uplift.

First coat of asphalt is applied

Asphalt is laid using a wooden float

Asphalt is spread onto the upstand to create a temporary seal

Completed upstand with internal angle fillet

Completed roof with new rooflights, note early morning condensation evaporating