You will not be disappointed.
Flashing is an essential part of any roof and functions to prevent the passage of water into the roof from a joint. There are three main types of flashing that are typically used in roofing applications: Apron flashing, Chimney flashing and Step flashing.
Apron flashing (also known as cover flashing) is the most common type of flashing used in roofing applications, mainly due to its versatility. This type of flashing can be used on the front and backs of chimneys, abutting brickwork on flat roofs, or where a roof meets the brickwork of a house or outbuilding. It is also used on slate and tile roofs where they meet a wall or a porch, on conservatory roofs, and around bay windows.
Step flashing allows a roof to abutt brickwork in situations where a lower height roof runs into a wall, a roof meets a chimney, or a conservatory roof meets the wall of a house. The 'step' refers to the pattern created in the lead by a series of cuts that allows the lead to penetrate into the courses between the bricks that resembles the steps of a staircase.
Chimney flashing specifically prevents water from entering the building at the point where the chimney meets the roof.
Torch on felt roofing describes the method of application and are a big improvement on the older pour and roll system. Great strides continue to be made in bitumen and modified bitumen technology such as SBS or APP, resulting in much better resistance to UV damage and cracking.
This type of felt roof comes on rolls and is laid with the aid of a very large blow torch that heats and melts the rear of the felt, melting it onto the roof structure below.
Typically, it's applied as a 3 layer system usually consisting of a perforated underlay, a 2mm underlay layer, then thick 4-5mm felt.
You will not be disappointed.