I'm building a lean-to up against a house and plan to use a sloped roof butting up against a brick wall. It's basicaly a shed so i was wondering if it is still necessary to use lead flashing or will self adhesive tape flashing be adequate, also im assuming this does not have to be chased into a mortar joint.
Also is it necessary to use several layers of felt or will just a layer of shed felt be ok (how long does this stuff last?)
The roof area will be about 12msq with a decent pitch.
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