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As suggested, yes they do but as has been exampled, no contractor with any sense will want to take the chance to mole blind if there is any risk of services being near or in line. It could end up costing them and their insurers plenty. The fact that there are 2 chambers directly in the path...

There is no way anyone online can really know which it will be. Ultimately the contractor will have to decide when they come on site. That being said, given there are 2 chambers right in line in the drive and without local knowledge of how the services - water - leccy - drainage may actually be...

Careful what you are doing with wiring and running lives etc as the boiler may use a volt free contact and if you send 240v down that then you will fry the PCB. Need to test to see what's on that brown and if it actually is 240v Hive works differently, they have a receiver that is wired...

All condi pipe is 21.5mm (originally overflow pipe) and it's standard stuff. Just buy the same make of pipe and fittings and solvent weld it, try and avoid Aquaflow from TS.

No way that it may be able to be connected to the white waste pipe internally, is it not high enough? Or come through the wall beside the white waste pipe into the gulley?

You'll need one of these on the nut in the middle of that C washer to tighten - https://www.screwfix.com/p/faithfull-monobloc-spanner-set-4-pcs/939rh

OSB3 - and rather than laying full sheets, you could cut lengths the same width as the joists and then just fit them to them, using them as packers to increase the joist height.

With an S plan there shouldn't be a valve with a white wire! A valve with a white wire is a 3 port mid position valve that is used on a Y plan system. Can you post pics of the valves and their relative position in the system?

Taking it that there may be a need to use both rads full on, which is the standard approach to design, that 10mm feed will be at its limit providing for the 1400mm rad. The 10mm can be increased to 15mm but it won't take away from the fact that the large rad has maxed out the pipe carrying...

Yes, it's usually easier delivered, there's a lot of weight in 22mm. Any reason for using 22mm, 18mm would be more than enough I would think and they are both T&G, is it just to make up the height? As far as sheds are concerned I believe Wickes used to do it, the larger tiling warehouses should...

What type of mixer was there before? 150mm centres on wall mounted bath fillers with a shower diverter has been common for a long time, possibly a European make, given you're in Portugal? No marking, name or anything on it I guess?

Why would you want to use them? The usual option for safe electrical conductivity in copper pipe would be to bond the pipework. Not sure if these are to function as Dielectric connections in under counter electric water heaters but they are usually used primarily to stop electrolytic corrosion...

Yes - example would be a plastic hose adapter for an outside tap but as suggested it would need a sealing washer as they would normally use parallel threads.

Ah ok - so a bath filler as well as a shower diverter? Unfortunately I think you'll be hard pressed. Most, if not all, bath fillers with shower diverter are 150mm here in the UK as they are solid bodied, so the inlets wouldn't move, any adjustment would be through the Z connectors. The only...

Most wall mixer taps are, as you suggest, 150mm centres here in the UK. Deck mixers can be different @ 180mm centres and other mixers to utilise the bath holes then need to use upstands to obtain the measurements. Not sure with Portugal though, as with most European country sizes, they all seem...

+1, maybe a bit far to travel from Colorado. F.Y.I - This is a UK forum

If the CH is open vent (OV) then there is no real way to monitor the system to see if it's leaking, i.e. if it was sealed then the pressure gauge could be monitored. All that can be done is look for leaks @ valves and any exposed pipe joints. Alternatively if it is OV then put the system on...

Time to get back to your insurance then and explain the issue to them, it'll be for them to deal with it. They may send out an independent assessor and get the work checked. As suggested, if they have clearly stated that there should be no connection between the 2 but when water is sent down...

The type of hammer you are experiencing will be from a loose pipe somewhere. When the fill valve shuts off quickly, it's sending a pressure pulse down the cold pipe and the knock you are hearing is that pulse finding a loose pipe somewhere. Usually on a piece of wood like a joist if it's a low...

Interesting, looking at the MI, it seems like it may be very specific to those specific stats, given they have 3 matching terminals - +V, 0V, RH The +V and 0V seems to be the 5VDC switching side but not sure what RH would be, maybe something to do with hysteresis for the stats and in effect...