James's shed

[James99]

Hi everyone,

I have a long narrow space along the edge of my garden and I want to put a shed there. I will try and copy Mike's workshop as much as I can.

It's going to be 6m long and 2.2m deep. Apex roof. Height at the eaves 2m. Haven't decided on ridge height but thinking 2.7-2.8m to give a decent roof pitch. I don't want it to be too high because it's going to be 0.5m away from the boundary fence (but I know I will need to get planning permission).

I'm going with ridge beam construction for the roof to maximise ceiling height. I have emailed a structural engineer to design the ridge beam for me.

I will copy Mike's roof construction in regard to osb on the inside, followed by insulation and then breather membrane.

I will also copy Mike's wall and floor construction. I'm going with a bare concrete floor.

The main thing that I'm puzzled about right now is the roof covering. I am thinking of using a corrugated roof, but I am not sure how to block insects whilst also ventilating the void between the roof sheets and the insulation. Would anyone have any advice on this? I would be particularly grateful for Mike's view!

Many thanks,

James

 

[Malc2098]

I more or less followed Mike's construction, and at the soffit fitted stainless insect proof mesh.

 

[James99]

I more or less followed Mike's construction, and at the soffit fitted stainless insect proof mesh.


View attachment 38534

Ah that's rather ingenious, hadn't considered something like that. Thank you. How did that work with the cladding?

 

[Mike G]

.......The main thing that I'm puzzled about right now is the roof covering. I am thinking of using a corrugated roof, but I am not sure how to block insects whilst also ventilating the void between the roof sheets and the insulation. Would anyone have any advice on this?.....

I think there are 2 approaches in principle. The first one involves fitting the corrugated roof sheet on top of a ply or OSB sheet which sits on the rafters. The second involves an eaves detail.

In either solution you have 2 junctions to keep insects out from.......below the sheet to the wall, and above the sheet to the corrugated steel. The latter is easy, because all profile manufacturers sell foam or plastic inserts which match the profile, and which can be fitted easily under the steel to close the gaps. The former is a matter of careful joinery to avoid creating unnecessary gaps, and careful detailing to cover the ventilation gaps with insect mesh.

 

[Malc2098]

Ah that's rather ingenious, hadn't considered something like that. Thank you. How did that work with the cladding?

I think you can see from the photo, the aperture is completely covered by the mesh, so the wall cladding comes up to meet to bottom of the rafter

 

[Planeiron]

The main thing that I'm puzzled about right now is the roof covering. I am thinking of using a corrugated roof, but I am not sure how to block insects whilst also ventilating the void between the roof sheets and the insulation. Would anyone have any advice on this? I would be particularly grateful for Mike's view!

Many thanks,

James

You can purchase profiles matching your roof sheeting with mesh inserted but being in Northern Ireland which may as well be Northern Korea as far as importing materials, I fabricated my own which is a bit of a faff but much cheaper.

Basically drill holes in the mesh and make a slice perpendicular to this, then insert mesh. Great way to use offcuts of mesh. Tape the slice and job done.

 

[fuse]

Just a quick point for everyone- make sure your sheds(and houses) don't have gaps,holes or mesh aperture more than around 5.5 mm especially above around 6' off the ground.
It's approaching honey bee swarm season and they can be difficult/expensive to remove once established

 

[Doug]

The answer to your question @James99 depends on the material your corrugated sheets are made of.