monopitch ridge roof on cavity wall

[sm_jamieson]

Fitting a monopitch roof with wet bedded mono pitch ridge tiles - you know, the ones shaped like a number 1. They will be on top of a cavity wall. I cannot find an example of how such a roof is detailed at the ridge. At the eaves, the rafters will be birdsmouthed onto wall plate on inner leaf. At the ridge, how is the rafter fixed to the wall ? Presumably a wall plate on the inner leaf, and a birdsmouth at the top also ? Then bring the outer leaf right up under the mono ridge tile ? Is there a diagram of this anywhere on the net ? Thanks, Simon.

[neverwas]

page 15 of the linked manual has one little diagram FWIW

[Kipper at sea]

A wall plate is bedded on to the inner wall and fastened with straps. The rafters are fixed to the wall plate and must go through the outer brickwork so they protrude beyond a couple inches or cm. The rafter ends are then cut flush with the out side wall. This is to enable the top tile to fit right under the roll of the mono ridge. A lath or board is fixed to the outer wall in line with the screw holes in the mono ridge. Screws are not tightened up, as this will disturb the mortar.

[Kipper at sea]

A wall plate is bedded on to the inner wall and fastened with straps. The rafters are fixed to the wall plate and must go through the outer brickwork so they protrude beyond a couple inches or cm. The rafter ends are then cut flush with the out side wall. This is to enable the top tile to fit right under the roll of the mono ridge. A lath or board is fixed to the outer wall in line with the screw holes in the mono ridge. Screws are not tightened up, as this will disturb the mortar.

[Simon]

Thanks guys. Simon.