'board on board' cladding

[theflyingpig]

I'm planning on cladding my newly built shed/workshop with 'board on board' cladding. I'm intending to fix 150mm x 20mm 'gravel board' verticallly, then covering the join with a 25mm batten. I'm wondering if I should leave a gap between the gravel boards, and if so how wide? 10mm maybe? Also. Should I fix with nails or screws? (into cross battens at 600 centres)...

Thanks for any advice....

 

[noseall]

I'm planning on cladding my newly built shed/workshop with 'board on board' cladding. I'm intending to fix 150mm x 20mm 'gravel board' verticallly, then covering the join with a 25mm batten. I'm wondering if I should leave a gap between the gravel boards, and if so how wide? 10mm maybe? Also. Should I fix with nails or screws? (into cross battens at 600 centres)...

Thanks for any advice....

Gravel boards?

 

[freddiemercurystwin]

You should have studs + breathable membrane + vertical battens + horizontal battens + cladding. In an ideal world the horizontal battens would have a slight angle to the top of them to direct any rain outwards.

 

[23vc]

As said, need vertical battens behind the horizontal ones if you’re not already aware.
I’d probably leave a slight gap, might reduce chance of them expanding and cupping. (Might). I’d go for the tongue tite type torx cladding screws.

 

[JohnD]

I'm intending to fix 150mm x 20mm 'gravel board' verticallly,

A vertical gravel board?

How will that work?

 

[Deluks]

I think he means 6x1 treated timber. Which is also used as gravel board.

 

[theflyingpig]

I think he means 6x1 treated timber. Which is also used as gravel board.

Yes, apologies, this is what I mean.... That's what the builders merchants refers to them as...

 

[theflyingpig]

My wall is : studs, osb sheathing, membrane, vertical battens onto studs, then horizontal battens onto those.....

 

[JohnD]

I used to have vertical cladding, but all the boards rotted at the bottom, where damp had soaked into the end grain.

My replacements are horizontal shiplap, and I made a few spares. They are fixed with csk brass screws so I can easily replace any that rot.

 

[theflyingpig]

I used to have vertical cladding, but all the boards rotted at the bottom, where damp had soaked into the end grain.

My replacements are horizontal shiplap, and I made a few spares. They are fixed with csk brass screws so I can easily replace any that rot.

Interesting. Was it treated timber? I was thinking to paint some treatment onto the cuts at bottom...

 

[JohnD]

The new stuff is, I don't know about the old. But end grain will always absorb water, including whatever runs down the face. There will also be rain splash, and often water lying on the surface the ends stand on.