Battens for metal roof question!

Lots of answers, but always less than the chosen ridge capping coverage.

At work we go 20mm down from the apex with a 90 x 45 perlin

Early years when using 75 x 38 green hw was a standard 150mm down from the apex to the bottom of batten. Have since moved to 170mm to suit current flashing sizes.. Basically the size of the capping / flashing then all timber batten up from there. If using top hat steel batten 100 x 40 (I think) I come down 190mm to the bottom lip which puts the body/meat of the batten under the screw zone of the capping / flashing.

Cheers

I'm using 90 x 35 battens. Would the 170mm to bottom of batten be suffice?

not sure about the distance down but 90 x 35 is way overkill..metal roof battens are the way to go.. so much lighter and easier to use..

I thought 90x45 was the standard these days (other than metal battens) wouldn't 90x35 not meet code??

Originally Posted by Micky013

I thought 90x45 was the standard these days (other than metal battens) wouldn't 90x35 not meet code??

Depends on the area, rafter spacing etc

Good to know. Cheers

Originally Posted by johnstonfencing

Cheers

I'm using 90 x 35 battens. Would the 170mm to bottom of batten be suffice?

Yep that would Be a pretty safe bet

Cheers