1. Rafters Interlocking Tiles Wall plate Fascia board Barge board fixed
ceiling
joists
Fascia board
Barge board fixed
to gable ladder -
both optional

2. Roofing felt draining
into gutter
Tilting fillet to prevent
felt from ponding
Perimeter tiles are
usually nailed or clipped.
Fibre cement
under-cloak
Concrete interlocking tiles. Flat tiles, like these, can often be laid with staggered joints
or straight joints.

3. Some interlocking tiles can be laid to very shallow pitches.
Tiles at ridge, eaves and verge are usually nailed down or clipped.
Ventilation can be provided in a variety of ways (see Ventilation)
Ridges and verges can be ‘mortared’ or ‘dry fixed’.
Verge with
mortar pointing
Verge tiles may need
clipping depending on
roof slope and
exposure
Modern dry verge system

4. Felted roof ready for
interlocking tiles
Felt lifted back showing tilting fillet.
Strip of DPC has been used to extend
felt into gutter - strictly speaking
some felts should not be used externally,
they become brittle in sunlight and are
easily damaged by birds.
Plywood barge board and fascia board