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If it was my property then I would wish to place pipes under the lagging to reduce the chance of freezing up.

Stop cocks need to be exercised every three months to avoid any risk ofetting jammed when needed in the event of a serious leak. In addition the gland nut needs to be kept very slightly tight to avoid the packing leaking as yours is doing.

Well in theory it might as I mentioned in my third paragraph. However the flow temperatures for modern condensing boilers is usually set at 70 C and hot water for 55C to 60C so I do not see much serious scope for a very excessive over temperature. For the ABV to open under normal CH...

Yes thats the usual correct position to fit it. But if it was for me then I might fit it across the two port for the HW cylinder so that if it did operate the heat could be stored in the cylinder. But pedantics might claim that in a fault condition the hot water might exceed its temperature as...

An auto bypass valve is needed when a situation can arise that there is no flow from the pump. That might happen when there are two or more two port valves. But a three port valve always has at least one port open . So an auto bypass valve is not required.

It looks like the inlet valve to the filling loop has been left permanently open.

It is relatively simple to do it but there is quite a lot of work involved. UV cylinders of fair size will usually be over £500 just to buy!

If the leak is from a hot water pipe then a thermal assessment with an IR thermal meter will often indicate where abouts the leak is. That amount of leakage would also usually cause dampness in the area of the floor.

It is not possible to make any educated choice without a proper assessment of the dynamic flow rate from the mains water. I would always prefer a hot tank solution as that gives an electric heating option in case of gas supply or boiler problems. As well as a usually higher flow rate than a...

I would make a guess that it is lime scale which is rather contaminated with some iron. Do you have any iron pipes in your water mains supply? Easy enough to chemically test it though.

If you claim to be vulnerable the water supplier might deliver some bottled water to you. You can make plastic bottles warm in a microwave.

I am wondering if the rubber washer has come off? Is it fitted so that the inlet is below the washer? If not I am wondering if high mains water pressure has pushed the washer off its spindle.

It might be at the extreme end of the scale but it is still giving you the typical temperature that hot water tanks are set to. When using water it is normal to mix some cold water with the hot to obtain water at the temperature that you want to use it at. We cannot see the whole tank but...

A friend with one fitted two years ago bleeps for low battery warning. An ST-622. But it is a rechargeable battery and says it should not be recharged or replaced. It is meant to last for 10 years and the whole alarm replaced then. Seems to say the smoke detector part only has a life of 10...

I have something called just "Smart Music Lighting" with no model number or anything else. I cannot find any instructions for it anywhere. Can anyone suggest a typical similar model which I could use to follow the setup instructions?

As I recall in order to get your Whats App For Windows you do need a smart phone to look at a QR code as part of the setup procedure. Once set up it is useful on a PC to see new WA messages. But I think it is somewhat limited as to what you can do with it on a PC.

It does not seem to happen on another laptop which is used on the same wifi. Since this laptop gives the "cannot connect" error then I expect it is a problem with my laptop.

This seems to be only on Community Fibre which is the network that I am usually using.

I have an ASUS X553S running Windows 10. Quite a nice laptop with a 15" display. It logs into my WiFi whenever I turn it on as set to. But after a couple of hours it disengages the WiFi and if I try to manually reconnect it says "Unable to connect". But does not show any reason why...

If I remember correctly the boiler stat has an NTC thermister on the end of thin wires. But to respond properly the pocket the NTC goes into has to be filled with thermal conduction paste. You can buy that for computer processors. But if caught out some silicone grease will do a temporary job.