Big six to box profile

[J 1177]

Iv got a 20x75ft hay shed with a 35x75 lean too off it, now the hayshed roof is ok (atcost) but the leantoo roof thats at a shallower pitch, steel with angle iron perlins (has seen better days. For now iv patched it up. Plenty pannel selant. Long term it needs a new roof and i may as well do the lot.
What im wondering would box profile be ok as the lean too has bulls in and would the change in pitch be a probem or am i better sticking with fibre cement big 6?

 

[RWG Contracts]

Iv got a 20x75ft hay shed with a 35x75 lean too off it, now the hayshed roof is ok (atcost) but the leantoo roof thats at a shallower pitch, steel with angle iron perlins (has seen better days. For now iv patched it up. Plenty pannel selant. Long term it needs a new roof and i may as well do the lot.
What im wondering would box profile be ok as the lean too has bulls in and would the change in pitch be a probem or am i better sticking with fibre cement big 6?

If there is livestock under the roof I’d be tempted to stick with big 6

 

[Pan mixer]

Or insulate the tin in some way, I did one with spray foam years ago but won't do that again due to vermin problem.

Subsequently I have lined them with ply and that seems to work better and add strength to the roof. Bit of a faff with battens under the joins etc but still looks good after many years of pigs.

 

[mo!]

We're going from wriggly tin to big six. It's cheaper and shouldn't rot like the tin has. If it's very shallow pitch you need bigger overlaps and possibly sealant. The Eternit product guide has all the details.