DIY Doctor

Office Shed Foundations and Other Questions That Need Advice

Postby dustyb » Wed Jun 21, 2017 2:10 pm

Hi All,

I'm looking at building an office shed at the side of our house. We've not decided whether to go for a pre-fab, or build one ourselves. I've not bad at DIY myself - kitchens, bathrooms, partition walls etc. We also have a good friend who's a carpenter.

We were hoping someone might be able to offer some high level advice if possible?

Please see attached photos - I'm thinking of using as much of that space as possible whilst keeping it square to the house ( 3m depth x 2m width )

My first question - is it a good idea to build the shed attached to the house? So the brick would be one of the walls on the interior. Or is it better for it to have it's own wall butted up against the brick? When I say 'better' I mean in terms of water ingress, damp, mould or anything else.

Second question - any thoughts on the best approach for the foundation? A concrete slab seems the best choice, particularly if attaching to the house.

I've also considered a timber frame, raised off the ground using some of these puppies concreted in holes:

Another option is using a base kit like this:

With the base kit, I'm just concerned about damp rising up through the timbers.

It's early stages weighing up the options, but any thoughts are welcome.



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