flat roof firring advice

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hotnuts21
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flat roof firring advice

Post by hotnuts21 »

Hi all, I'm flat roofing a new small extension roof and the firrings need to run at right angles/perpendicular to the joists so I want to make sure the firrings are upto the job for a warm flat roof.

Over a 3.6m length the firring will go from 100mm to 40mm, they will also overhang at the end by 100mm to cover the cladding with a soffit/eaves.

The thing I'm not sure about is do I need to cut down a 100mm C24 joist or will standard stud timber be ok?

Thanks
Your help is much appreciated and has helped me to improve my skills
You can see the results of your help at
post494791.html

Thanks UHM.
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