Cladding barn roof alternative to ply wood

[dennisengland]

I own a barn . The roman tiles can be seen from inside.
I wish to remove the tiles and battern then put ply sheets on the rafters and replace the membrane,battons and tiles.
The problem is the ply sheets will be a fire risk . Can anyone suggest and alternative to using ply sheets.
Thank you

 

[Mw Roofline]

Fermacell 8x4 sheets

 

[Alastairreid]

look at this

 

[Mw Roofline]

look at this

Great minds

But your site is in China and mine is in Lancashire so technically I win

 

[Alastairreid]

lol yours is better! ................this time

 

[JohnD]

why do you want to use ply and not an insulating board?

 

[dennisengland]

I own a barn . The roman tiles can be seen from inside.
I wish to remove the tiles and battern then put ply sheets on the rafters and replace the membrane,battons and tiles.
The problem is the ply sheets will be a fire risk . Can anyone suggest and alternative to using ply sheets.
Thank you

Thank you for your help.. The HPL ply sheets sound an excellent option . It will give the barn warmth and would give an excellent base for further coverings or just leave white, I am shore others would find this useful as people have stables that need draft proofing.
thank you

 

[Mw Roofline]

How much did you pay for the sheets in the end?