Roofing cassette roof

[junglejim]

We’re having a timber frame with cassette roof erected soon. I’m going to be tackling the roofing myself and looking for information / advice / tips about layers, materials and details.

 

My understanding is that I will need to add:

1. breather membrane

2. counter batten

3. Battens

4. Tiles (Wienerberger Rivius)

 

Questions I have:

- do I need an extra breather membrane between batten and counter batten?

- What kind of fixings should I use to attach counter battens to roof cassette (12mmosb top layer)?

- what kind of fixings batten to counter batten?

- tips on eaves/verge details

- any sequencing tips particularly eaves

 

 lots of learning to do so any help greatly appreciated.

 Thank you in advance

[Mr Punter]

Use an eaves tray at the bottom.

 

Sort ventilation and fascia / soffit details.

 

Fit the membrane then nail the battens and counter battens using 90mm Paslode galvanised nails.

 

Use an eaves tray at the bottom.

 

Sort ventilation and fascia / soffit details.

[junglejim]

Thanks @Mr Punter

  I won’t be able to add cladding/render to the walls until much later so hoping I can allow for this when doing soffit? With cassette roof to cassette walls I’m assuming only ventilation is over fascia but struggling to find a diagram that shows what is needed clearly.

 

 Thank you

[junglejim]

I’ve also seen some diagrams that show no soffit on cassette roof eaves detail as the cassette essentially is the soffit (I think)… an I missing something?

[junglejim]

Edit: 18mm osb