osb sheet for shed wall

[jame]

could anyone let me know whether bitumen waterproofer will be good for waterproofing osb sheets.i dont really want to cover the sheets with roofing felt as i was told it can easily get torn .please advise me.thanks

 

[masona]

If you're talking about using this for weather protection for the external wall then the bitumen in a warmer weather will be sticky to touch. Best to use exterior plywood (WPB) and treated it wood treatments. If that the sort of appearance you don't mind.

 

[jame]

If you're talking about using this for weather protection for the external wall then the bitumen in a warmer weather will be sticky to touch. Best to use exterior plywood (WPB) and treated it wood treatments. If that the sort of appearance you don't mind.

hi masona
thanks for your advise .i am actually having a shed 6m by 3m .the back wall is 6metres wide facing the graveyard i am not therefore bother if it not looking nice so long that the wall is long lasting .i already bought 5 osb sheets 1.8 cm thick 8' by 4 ' .it is the best option to protect the sheet from the weather that is my main concern.when i started 2 months ago i thought of covering it with shed felt but now i am having a second thought as i have been told by a few people that shed felt get torn apart easily.in wickes they do bitumen waterproofer 25 litre only 20 pounds .i thought of coating the sheets with few layers of bitumen .would that be long lasting.?thanks

 

[masona]

On the back wall of my shed I used Wickes green (or available in black) bitumen corrugated sheet upright with screws and caps. This way there's no need to treat it as I can't get to it for treating. You will need a enough roof overhang to cover the sheets thickness to keep the rain off the top. If I remember they were £7 per sheet 2m x 900mm so it will cost you double compare to the bitumen waterproof but a lot longer lasting so cheaper in the long run.

The bitumen are okay but when its on upright they tend to run downward on a warm day just like you see them on some of the telegraph poles because bitumen have a softening melting point when certain temperature is reached.

 

[Bylough]

Well I covered the back of my shed with just felt by using crossed laths of wood about 18 inch squares to hold it in place- although only an 8 by 6 foot surface-many years ago and never had any problem. You can use an adhesive too if you're keen enough.