Fitting Fascia Boards

27 Aug 2015
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United Kingdom

For an outbuilding, we have 9inch (220mm) roof joists and 4in (100mm) insulation and 18mm OSB3 boards for a warm flat roof.

Based on this I think I will need at least 340mm Fascia boards - but I can't seem to find any; most seem to go up to 225mm only..

I was planning on using 18m fascia boards which i could nail directly onto the joists, rather than put timber board on top.

Will be putting on an EPDM roof membrane on top if that makes any difference.

But am a bit stuck as the 225mm facia boards are too small and i can't find the right size ones..

Any suggestions on what I can do to fix this?


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