AwesomePete

How dare you! I mean... You're right, but don't say it out loud. The size would be fine as there's no cold bridge issue. I've not ruled it out. I keep upping the spec on things like this, so I should consider the cost implications really.

Correct. Plate on the wall, then guide rail to carry the SIP. Ok, I thought that might be an issue. One to consider then. Thanks.

Would that be structurally acceptable? I don't mind an overhang as long as structure/damp is not an issue.

I did look at those, but know nothing about them and they're not cheap. ~£800 for me. Still considering then though.

Not sure what other information you need? It's a (low occupancy) garden room office, so I plan to wrap, batten and clad the external and batten and plasterboard the internal. If 10mm soleplate overhang both inside and outside is acceptable, then simple engineering brick would be easiest. I was expecting to install DPC strip under the soleplate, locating plate, then the panels as normal.

Interesting product... About £800 in my case! Not cheap, but worth considering, thanks.

I'm building a garden room with 125mm SIP panels on a concrete base with a PIR floating floor. I want to get the panels off the base and away from ground level, but I can't find suitable brick/block sizes for 125mm panels. If I use ~100mm wide engineering brick, I'll have an overhang on both sides. I'd consider 140mm blocks, but under 215mm high seem hard to get and I assume I'd have an internal cold bridge to deal with. Perhaps lay engineering brick at 90 degrees and cut off an end? Form a concrete upstand? What do you suggest? I feel like I'm missing something obvious.