Clay double Roman shallow pitch headlap

[jackg]

Building a single storey extension using existing and reclaimed clay Double Roman tiles.
A canopy goes over the main door. it is about 1500mm deep and 3000mm wide.
It as a shallow pitch of 17 degrees what headlap is recommended?
The main roof is trussed and has 30 degree pitch and the canopy comes off this.

 

[datarebal]

which Double Roman are you using?
17 is near the mark for most with a headlap of 100mm
double check your pitch.

 

[noseall]

Marley double romans will go down to 22.5 degrees with 100mm headlap. This only applies to the smooth fellas.

 

[datarebal]

yes and Redland 50s 17.5 at 100mm HL likewise through colours.