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Your taps colour is caused by verdigris the natural patina that all copper and its alloys go. You can speed it up by using acetic acid . Or back in day copper roofs were brushed with urine! That probably why above comment.

If the waste is any sort of length I'd go up to 50mm . Are you just cutting up screed or a decent chase through concrete section?

Either but a bit more care needed on non cut ends as they have a sharper leading edge.

Suggestions? Stop playing with things you know nothing about. If the engineer you have employed says boiler has to be disconnected for safety believe them.

On secondry circulation systems it is the pipe that's the problem. Standard barrier pipe is designed to carry hot water then cool again. On a recirculation system that's run continuously it never cools and the inner part of the tube can strip out. When the plastic pipe manufacturers stopped its...

Pump on return Pipework needs to be copper or MLCP (plastic with a aluminium core) We use tectite metal with tectite classic fittings and correct insert ,mainly because it's standard 15mm and 22mm and not 16mm. Do not use standard plastic barrier pipe its not designed for the constant...

We sorted on of these that had been poorly installed, The manuals were readily available on line.

No problem to switch off use the switch that turns power to heating system. Not the one on the boiler! they break for fun.

From memory that's a positive head pump First thing I would check is correct working of reed switches they are clipped to pump outlet. If your in a hard water area could be flow switch itself.

Par for the course for a powder coated towel warmer, chrome plated not much better. Replace them regularly some nice stainless ones available total cure. They tend to go quicker when near W C.

First ptfe isn't the only method to seal rad tails. I'm a ex new build contractor regularly used to install several hundred rads a month Yes odd tail leak ever with 22 winds of tape but switched to loctite 55 years ago never seen a rad tail leak since. Plus even when we used ptfe zero need to...

We look after a good number of Grant combi's First it's vanishing rare to have thermistor problems. In fact we don't bother changing when we change the board . No not normal for pocket to be full of muck. Not inadvertently got water on board have you? Far and away the most common cause of...

That looks like a quarter turn valve but if it's stuck I wouldn't be trying to move it. We would just freeze the pipework above existing stop tap and fit new lever valve. You can get cheap pipe freezing kits but I would suggest hiring a electric pipe freezer. You can then take as much time as...

Unless heatrae sadia specifically state fitting a different water softener to their recommended one would invalidate the warranty just go with BTW. I live / work in a area where the water is described as aggressively hard. We fit BTW softeners with no issues.

Unless you have something really ancient 15mm compression nuts are threaded 1/2 in BSP.

Wood pigeon feral pigeon grey squirrel rats Rabbits crows magpies and jackdaws are all on pest list and can be shot. There are restrictions! Search UK pest list.

Bartol was sold to the Hepworth iron company it became Hepworth (hep) later taken over by Wavin. Terrain was bought out by Polypipe but the Terrain range is now totally discontinued.

Was all done to specification and very detailed drawings. The CLASP buildings were steel framed with cladding normally hanging tiles All internal walls were paramount deep joy to fix too. All drainage was key terrain top of range at time.

Never used it on a domestic property but back in 70s I worked on a number of CLASP buildings (basically prefabs) mostly schools. They regularly had 3in soil pipes particularly on the horizontal sections.

I know Kevin Mcdonald (founder of Bartol and later Polypipe) to talk to. He explained both brown and black plastic are not a true colour they have a colour added to grey polymer. Most of damage is uv the reason the pipe and fittings often change colour at different rates is because pipe is...