Purlin length

[GmB]

Covering a small feed area and the tape measure says the one bay is 6.7m.
Can you get timber purlins 9x3 that length, or am I going to have to ‘stretch‘ a 6m length with extra long cleats?

 

[GmB]

Should have added it’s a tin roof

 

[Party Pete]

Covering a small feed area and the tape measure says the one bay is 6.7m.
Can you get timber purlins 9x3 that length, or am I going to have to ‘stretch‘ a 6m length with extra long cleats?

Try a local sawmill .

 

[robs1]

Can get steel purlins made to measure

 

[designanddetail]

Yes you can get timbers up to 7.2m cost a bit at that length. Pontrailas sawmills are good

 

[GmB]

Thanks for the input.

Plan is to put a lean-to out this way, the 6.7m is the outside to outside of the concrete uprights, don’t want to have to put another upright in if I don’t have to.

 

[Bald n Grumpy]

6.7 m is about 22 feet, is the extra 2 feet worth the cost of non standard purlin against using standard 9x3 20footers ?
Just a thought

 

[Lakes Nash]

Z purlin,

 

[HatsOff]

Thanks for the input.
View attachment 1124442
Plan is to put a lean-to out this way, the 6.7m is the outside to outside of the concrete uprights, don’t want to have to put another upright in if I don’t have to.

Have you got a steel eaves beam? Run an intermediate rafter supported on the eaves beam back to the shed behind and use 2x3.5m purlins.

 

[GmB]

Have you got a steel eaves beam? Run an intermediate rafter supported on the eaves beam back to the shed behind and use 2x3.5m purlins.

Still at the measuring / design stage at the moment, so that is something worth considering.

 

[Lakes Nash]

Still at the measuring / design stage at the moment, so that is something worth considering.

Z purlin, light and long, then just tek screw your sheets on, easier than putting great lengths of timber up to which you’ve to source, price will be eye watering for non standard timber

 

[Sharpy]

James Smith fencing Kirkcudbright supply purlins up to 30ft long, not cheap though.