Rafter spacing for garden playhouse

[Jumpy Guy]

I've built the kids a playhouse, and need some help on roof construction

It's made from 3" x 2" timber framing, and 16 mm shiplap

It's 2.9 m long, 1.7m wide

Wall height is 1.4m .

I've constructed the roof so far

45 degree slope, rafters made from 3 x2 s running up to a

Ridge board, supported at both ends by a 3x2 vertical

So.. I have 5 equally spaced rafters along the length

Is this enough?
I've changed my mind a few times, especially considering the B&Q efforts, which seem to have 1 rafter halfway along the shed

Any advice welcome

[Jumpy Guy]

I know it's probably completely over engineered for a playhouse


The wall studs are at .75m centres, with 3x2 reinforcing between ( dwangs?)
These run up to a 3x2 wall plate, with the rafters anchored to it
I've lined the rafters up with the wall studs, so .75m between

I've also cut a collar tie to connect between opposing rafters

I understand 0.75 m is further apart than a house would be, but it's at least twice as sturdy as any BnQ shed or summerhouse I've looked at

Edited by Jumpy Guy on Wednesday 20th September 23:09

[Jumpy Guy]

Thanks

Will post pics tomorrow

While I'm here.. What's the thought on roofing material?

Ply, what thickness? Or ODB?

Was planning on double felt on top