dpmiller

80mm plus service void? That's LOTS of very long screws...

Nope, just the rough-sawn tanalised stuff from the local yard. While I *did* follow GSE's spec, it worth pointing out that a. the thickness needs to match your tiling battens and b. the wider the plank the easier it is to aim for...

4x1 treated.

why so focussed on warranties?

showers aren't inductive. Bog standard 2hp induction motor may have a peak starting current of anywhere between 25A and 40A so soft-start is pretty relevant. Doesn't change the fact that the unit doesn't modulate tho...

have you tried BPC for a design quote?

I'd caution that soft start is very different to inverter...

Yes, they'll quote by height with whatever base starters or lintels, pots etc. Check the price between Isokern and Swift, too.

Scheidel quote including the rockwool insulation, the actual blocks and pipes, adhesive etc. It's really plugandplay (especially if you're rendering the blocks directly, we built a skin of standard blocks around the system blocks) even if the blocks are *heavy*...

is the upper strip wrapped around the floor cassette as a TonyTray perhaps?

I went with ceramic https://www.schiedel.com/uk/products/ceramic-system-chimneys/swift-air/ which also neatly looks after supply air too. A complete system inc the outer blocks etc was around the money the OP mentioned.

V-tac's "grill fitting" strips are superb if you want something more "linear". Light and plasticy, but great light output, run cool, and cheap! https://v-tac.eu/led-products-results-page/led-fixtures-1/?custom_f_145[0]=3134302d313630206c6d2f57&custom_f_145[1]=3131302d313330206c6d2f57

why not just an ordinary laminate worktop?

perhaps the "little boy" (condescending much?) was uncomfortable with accepting the liability for agreeing to something that isn't in the MIs?

Polarwall will supply XPS...

Since when was a PV diverter £500?

Nice part of the country, sir.

Hiya, whereabouts are you?

the chap that did ours was a wee bit more including the BReg drawings.

what's their ballpark cost for a house design?

the "middle bit" at the back of the pump is the inlet.

Is that maybe a back inlet gully with the grating removed? In which case it *should* be trapped, as long as the rodding insert hasn't been removed from it...

static vans are often by the sea tho, so salty air. Is the OP on the coast or inland?

we were in the same boat, mobilising someone else to do the contestable would likely have been more than the cost of their actual works.

Eeek!!! Are those uninsulated terminals facing upwards?