Replacement shed roof osb or ply.
11mm osb for shed roof.
For shed construction there are two commonly used grades of osb.
8 x 6 11mm shiplap with osb roof floor 8 x 6 12mm shiplap with t g roof and floor.
Still as good.
Would a 9mm ply board be better than 18mm osb.
Any advice much appreciated as i ve never had a shed with osb before.
There is also a plastic sheet dpm sheet as its only a field shelter then sarkit on top of the osb board then 32 x 25mm battens.
Will the thickness make a difference.
The thickness of osb that you need varies on where it is used in a building.
Also make sure that you get your supporting timbers at the correct spacing.
Typically 3 4 18mm for floors and 3 8 9mm for walls and 1 2 11mm roof.
The fixing guide says i need 18mm.
It is a long document with many parts and subsections.
For heavy duty roofing you may want to opt for an 11mm tongue and groove roof additional roof trusses can offer even more support for your shed roof.
So i will try and simplify what you need to know.
Osb sold in the uk is made to comply with bs en 300 oriented strand board osb definitions classifications and specifications.
Most osb suppliers have a load span table giving a guide to the spacing of timbers for different thicknesses.
As with flooring you have a number of roof options with the standard to premium levels of protection from the elements.
Osb comes in 4 by 8 foot sheets as does plywood but the manufacturing process allows the production of longer and wider ones.
A good alternative to ply wood and usually cheaper we stock osb3 board in a selection of sizes.
Thicknesses range from 5 16 to 3 4 inch and the proper.
9mm 11mm or 18mm.
Osb3 is just as good as regular shuttering ply.
Osb board a staple in a wide range of construction projects osb board is used for everything for sheeting through to structural sheathing and more.
Will the 11mm board suffice.
I roofed my stable with 11mm sheets covered with cheap shed kennel felt three years ago.
I need to buy a shed this week before prices go up.
I have rafters that are 40cms apart beneath the osb sheet.
Could a cover the boards with a tarp after boarding for a few weeks to a month before i felt fiberglass it.
Which would be better.
To make your shed complete the final step is building the shed roof.