Onoff Posted March 31, 2017 Share Posted March 31, 2017 (edited) Just putting it out there but thinking of building a garden room to get rid of the kids and their friends etc. Think "Dengineers" but a lot more upmarket. The old play house and tree house were fails tba. What's the thoughts to building it to near Passiv standards but on a much smaller scale, maybe 30sq.m. Cost irrelevant. Home made SIPs etc. Edited March 31, 2017 by Onoff Link to comment Share on other sites More sharing options...
ProDave Posted March 31, 2017 Share Posted March 31, 2017 @Crofter is your man for inspiration. Sounds very much like his build. If you make it that warm and cosy everyone will move out of the house into the shed. Didn't you ought to finish the bathroom before starting a new project? 3 Link to comment Share on other sites More sharing options...
MikeSharp01 Posted March 31, 2017 Share Posted March 31, 2017 Just doing this on our build - using the same technology as the main house to get my hand in with the techniques. Passive slab - does your slab ring, I joist portal frame, small MVHR, 34m2. Lots of fun Link to comment Share on other sites More sharing options...
Steptoe Posted March 31, 2017 Share Posted March 31, 2017 apart from the slab, the door, the airtightness, and lots of other stuff, my shed is done with 40mm kingspan, or equivalent, off ebay, its too warm in the summer, and cosy in the winter, I need to fit a bigger, and more, fans to move the air during the warm days. anyone, and everyone, thats comes into it just cant believe just how warm it is, even when the snow is on the roof, which I think says a lot about how well insulated it is, partially. Link to comment Share on other sites More sharing options...
Crofter Posted March 31, 2017 Share Posted March 31, 2017 Keep it under 30m2 and without obvious overnighting accommodation and you won't need a warrant. Likewise if you make it portable/moveable in up to two sections, which is the route i've gone down. Going the portable route lets you make it pretty big (6x18m exc roof overhangs) and obviously you can't have a slab, you'd have to go for a suspended floor. I would think that for a garden room that spends a lot of time empty, the main consideration should be keeping it free of damp, rather than worrying about energy consumption. So I would be tempted to make it both well insulated and well ventilated, and maybe not go down the airtightness route, unless you are going to go the whole hog and fit MVHR. Hmmm... sub 30m2, straw bale walls, design it around whatever windows you can get on Fleabay/Gumtree, little woodburner, optional single room MVHR unit to keep it sweet. Link to comment Share on other sites More sharing options...
Tennentslager Posted March 31, 2017 Share Posted March 31, 2017 39 minutes ago, Onoff said: Just putting it out there but thinking of building a garden room to get rid of the kids and their friends etc Be better to contact your local Social Work Department...happy to offer free advice? save you the long prison time? Link to comment Share on other sites More sharing options...
Onoff Posted March 31, 2017 Author Share Posted March 31, 2017 55 minutes ago, ProDave said: @Crofter is your man for inspiration. Sounds very much like his build. If you make it that warm and cosy everyone will move out of the house into the shed. Didn't you ought to finish the bathroom before starting a new project? I knew that dig would be incoming from someone! Easily bored that's my problem! I love this for the aesthetics but can see huge solar gain issues. A bit of decent glass too might be costly but I could possibly get some rectangular, commercial curtain walling. Then have the "round window" as an offset frame and hidden, sliding brise soleil like pocket doors behind that. Gotta have dreams! Link to comment Share on other sites More sharing options...
Onoff Posted March 31, 2017 Author Share Posted March 31, 2017 (edited) 1 hour ago, MikeSharp01 said: Just doing this on our build - using the same technology as the main house to get my hand in with the techniques. Passive slab - does your slab ring, I joist portal frame, small MVHR, 34m2. Lots of fun Pretty much my thoughts to do it as a learning exercise. Once the missus sees the concept "works" maybe I can convince her ref the house. It's a good 50m from the house where I'd ideally site it. And yes, MVHR would be the plan. Edited March 31, 2017 by Onoff Link to comment Share on other sites More sharing options...
Onoff Posted March 31, 2017 Author Share Posted March 31, 2017 Iris brise soleil? Link to comment Share on other sites More sharing options...
Ferdinand Posted March 31, 2017 Share Posted March 31, 2017 (edited) Will the garden room have its own bathroom? What about a hot tub and big TV? That would keep them out there. Edited April 1, 2017 by Ferdinand Link to comment Share on other sites More sharing options...
Onoff Posted April 1, 2017 Author Share Posted April 1, 2017 3 hours ago, Ferdinand said: Will the garden room have its own bathroom? What about a hot tub and big TV? That would keep them out there. Erm.....I think there's rules against that! Might run an intercom to call them in for dinner/bath etc. Saying that I'd probably Skype / Whatsapp / Discord / ooVoo them. Tends to be one of those methods for parent / child comms in this house nowadays! Easier than shouting with their headphones on as it comes up on screen in front of them Link to comment Share on other sites More sharing options...
MikeSharp01 Posted April 1, 2017 Share Posted April 1, 2017 (edited) Ours will have a bathroom - that was all the stuff here on the shower tray former, we included the building in our planning... not sure what rules prevent this although we have it as a condition of planning that it cannot be identified / converted into a separate dwelling. Edited April 1, 2017 by MikeSharp01 Added details of shower tray former Link to comment Share on other sites More sharing options...
ProDave Posted April 1, 2017 Share Posted April 1, 2017 4 hours ago, Onoff said: Erm.....I think there's rules against that! Might run an intercom to call them in for dinner/bath etc. Saying that I'd probably Skype / Whatsapp / Discord / ooVoo them. Tends to be one of those methods for parent / child comms in this house nowadays! Easier than shouting with their headphones on as it comes up on screen in front of them As long as the socket for the tv is 3M from the hot tub...... Why not take the "easy option" for a "garden building" Once it's done as being our home, it will be converted to workspace / studio's. We chose this one due to it's centre living room layout. One big room in the middle that will become a studio. A bedroom at each end, one will become a workshop the other a store room. The WC will remain but the shower will be removed to make a cupboard. It will get wrapped in another layer of insulation and timber clad to make it look more like a big shed. Link to comment Share on other sites More sharing options...
Onoff Posted April 1, 2017 Author Share Posted April 1, 2017 4 minutes ago, ProDave said: As long as the socket for the tv is 3M from the hot tub...... Isn't it if the tv is one of those that comes out of the bottom of the DOUBLE BED in the garden room that you have an issue? Link to comment Share on other sites More sharing options...
PeterW Posted April 1, 2017 Share Posted April 1, 2017 I reckon you're doing this all arse about face ... build a nice passivshed(tm) at the bottom of the garden that's soundproof from the kids, and then move in there leaving them in the draughty house ..! Decent TV, beer fridge and hot tub and you're away ..! Link to comment Share on other sites More sharing options...
Onoff Posted April 1, 2017 Author Share Posted April 1, 2017 No idea where to put this but if anyone fancies a crack at an iris door/window shutter here's the link to the DXF: http://makezine.com/projects/mechanical-iris/ Should be easy to scale up. Link to comment Share on other sites More sharing options...
ProDave Posted April 1, 2017 Share Posted April 1, 2017 6 minutes ago, Onoff said: No idea where to put this but if anyone fancies a crack at an iris door/window shutter here's the link to the DXF: http://makezine.com/projects/mechanical-iris/ Should be easy to scale up. Send that to George Clark for his next amazing spaces. Link to comment Share on other sites More sharing options...
Onoff Posted April 9, 2017 Author Share Posted April 9, 2017 Is there any reason against using 150mm of good old mixed hard core, suitably compacted under a 300mm EPS insulating layer for something like this? This rather than say Type 3. It's just that it's "on site" so to speak in the form of already broken up old paths and slabs thus zero cost for a start. I always worry about vermin like rats and also foxes, badgers, rabbits etc making burrows under such a nice "warm" slab. I've masses of old greenhouse glass. Would a layer of that over the area, subsequently smashed up before the hard core "work"? Cheers. Link to comment Share on other sites More sharing options...
PeterW Posted April 9, 2017 Share Posted April 9, 2017 Whacked down hardcore with a layer of road planings over the top ends up like concrete so I would just do that. BCO don't like you using road planings round here as you can't guarantee what's in it but tbh I can't see why for what you are planning it's not an option. They are usually cheap too Link to comment Share on other sites More sharing options...
Onoff Posted April 9, 2017 Author Share Posted April 9, 2017 Ta. Now then, orientation, the place would be best in the far corner of the plot. To suit the garden it would put the principle elevation facing SW, possibly SSW. I believe that's pretty good in terms of solar gain etc? Link to comment Share on other sites More sharing options...
Onoff Posted April 16, 2017 Author Share Posted April 16, 2017 Wheres the best place for nom 30m2 of 300 thick EPS suitable to go under said passive shed? Cheers Link to comment Share on other sites More sharing options...
PeterW Posted April 16, 2017 Share Posted April 16, 2017 That's a big shed ..!! 90m of 100mm is about 35 sheets so £350 from the merchants. Link to comment Share on other sites More sharing options...
Ferdinand Posted April 16, 2017 Share Posted April 16, 2017 I would want a firmer base than that to avoid rats - unless you can guarantee they will not burrow into hardcore. I would suggest a proper base so that it can be a permanent building. I saw someone replace a bodged base a couple of weeks ago which had rat burrows all the way round the outside such that when they dismantled the shed it collapsed round the edge when they stood on it. Alternatively leave a big enough gap under the shed itself that the cat or terrier can get in to kill the vermin. I would say you want the eps to be inaccessible , either by being sealed in concrete or under a floating floor inside the shed. F Link to comment Share on other sites More sharing options...
Onoff Posted April 16, 2017 Author Share Posted April 16, 2017 I've got stacks of old greenhouse glass I'd lay down as a first layer before any hardcore I think. I'd put plenty of broken glass in the hard core too. Link to comment Share on other sites More sharing options...
Nickfromwales Posted April 17, 2017 Share Posted April 17, 2017 Mines going on a timber ring beam ( already done ) suspended up off the soil. 5" of eps in the floor. My question is do I need to sheath the underside so nothing burrows upwards into the eps? @Ferdinand, good point about the cat gap . Noted, and will be implemented. Link to comment Share on other sites More sharing options...
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