New Shed Roof.

[hundleton1]

Hi guys, i have a few questions, I'm building a new shed thats 5.2m x 3.6m and am looking at what to do with the roof, I'm getting priced for a professional Felt job but a mate sugested using the corrugated Bitumen sheets onto of the roof boards.

i was looking at putting down 18mm OSB3 board onto of 6x4 at 400mm centres with either felt or the Bitumen sheet directly attached, would the Bitumen sheet be ok to use as iv not seen it before ?

also I'm finding that OSB is quite expensive, would it be possible to use 22mm chipboard flooring (water resistant type) as at the same side its still a good bit cheaper?

thanks in advance

Ian [/b]

 

[Alastairreid]

You do not always need decking.

http://www.wickes.co.uk/bitumen-corrugated-sheet/invt/240039/

 

[hundleton1]

thanks for the reply, i want a decking to seal the roof as my old shed had corrugated metal and was not sealed and i was getting condensation problems in winter.

thanks for the reply though