Building a SIP workshop.

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@Soul thanks for the tip!

Try again, drainage and sill plates

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Some panels and wall progress

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Few more progress shots and a bargain window - £150, bought the window (and door) before I built the walls so I could size the openings accordingly.

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Ridge beam 1 up

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Costs so far! At this point the only remaining larger expenses are the remaining electrics (Consumer unit, SWA and cabling), the electrician to connect the SWA/board up (I'm doing most of the first fix myself), and the cladding. There'll be a few other bits like paint etc.

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Great that you put the costs up, what size is it??

Just this morning, I was talking to someone about my office build and saying that if I did it again, I would go SIPs, and gluelam beam for the front frame (as opposed to stud, OSB & PIR, and steel flitch.

How are you cutting the board & PIR core?

6x4.2m external

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Bog standard circular saw, just cutting from both sides. Bit of careful measuring and you can get the cuts close enough.

The only thing that’s tripped me up (and has been the same throughout the build) is because my panels are 2nds, they’re not perfect and in some cases the 2 OSB sheets aren’t perfectly aligned, which has thrown my cuts out sometimes, if you were using brand new panels you wouldn’t have that problem.

What thickness are the panels?? what is the insulation type / spec? Any idea on u-values for any of it?? No insulation in the floor slab?

Got the 2nd beam up at the weekend, went up much easier, just pulled it up using the first beam.

It’s been quite bitty this build with work/kids etc. I think if I’d had a full week at it, especially if I’d have an extra pair of hands on a couple of the days, I could have gotten to this point, and got the roof on (the roof will be quick) in a week.

Ordered most of my electrical bits, don’t underestimate the costs of that, I’m spending a bit more because I’m doing all mine surface mounted in conduit(130ish), but even so, consumer unit (150ish-you could get away with much less though), cable (100), sockets(50), switches, SWA(250?), lights(120) etc. it quickly adds up.

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One other thing I was slightly unsure about was if the beam over the “garage” doors would deflect with the point load of the two ridge beams sat right in the middle of it (pretty much the worst case scenario for a beam loading) so I measured it before and after adding each beam and it hasn’t deflected even 1mm, same measurement each time!

Given the entire roof covering weighs about 300kg, of which the door beam will
only be taking a portion, and the ridge beams weigh roughly 360kg, half of which is already bearing on the centre of the door beam already and it hasn’t deflected, I’m not too worried.

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