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I can go along with that, seems fair.

I did a boiler commission once for a landlord who got all the plumbing done and left me to test for leak and commission boiler, I had to move the boiler ,flue in the wrong place, I had to empty water out of the gas meter it had wrong pipe connect to boiler, Other than that it was fine...

If you have pipes laid in the concrete then leak sealer will only delay not cure since they will get worse. The pipes should be taped in some way until they leave the concrete, you should see evidence of protection at floor level under the carpet. If not then re-route sooner rather than later...

I have drawn a diagram of on open vented system and saved it as word document, I want to show people who have plumbing problems how the plumbing should look, but I can't work out how to get it onto their post as a reply. Does any know how to do it.?

You will need to get a heating engineer to come round and tell you if the plumbing in your airing cupboard is correct for ventilating air from system etc. I don't know how to explain it without showing you a diagram. And I don't know how to do that with this web site. It won't let me do what I...

A Replaceable cartridge is best salt can be costly and cause corrosion of pipe work and children aren't allowed to drink it but a cartridge converts lime scale and renders it harmless. 1 make is at this web site:-http://www.aquabion-uk.com/#

Nothing to add other than the rcd detects a small current flowing from neutral or live to earth nothing to do with overload. that is what an mcb is for. so something is shorting to earth.

The air vent and cold feed may be wrongly positioned on the flow pipe from the boiler. Before the 22 mm pipe goes into the pump it should have 2 pipes connected to it. the vent and cold feed to the F&E tank, if one of these is on the return pipe back to the boiler that is why the water in tank...

If you use the higher grade of pipe insulation on both pipes and make sure that on entering and leaving screed the pipes are taped to avoid contact with the cement, that should suffice since the UHF is low output heat as well.

Looks like it should do the job, Nice and quiet too.

You could try isolating radiators from the system 1 at a time until the 1 without a trv is the only 1 on, just turn the trv to low and that will do.If banging still happens its not trv's.

Look very closely at the trv valve body, it will have either 1 arrow showing direction of water flow or 2 arrows meaning the water can flow either way. it it has 2 arrows then it is not the trv. check them all if even 1 has 1 arrow and the flow goes the wrong way through it then open that one...

Don't worry about name take it into a plumbers merchant stick it on the counter and say, "can I have some of those please?"javascript:emoticon(':D')

Yes but difficult or impossible to have a rodding eye inside the property.

Yes a soil pipe 4"for wc, and waste pipe is 32mm or 40mm for sink basin or bath. You can always join waste into soil pipe before the soil pipe run leaves the bathroom, But where it goes under the floor for a 20ft length with a straight run even between joists if the depth of joist is 200mm and...

You don't mention whether 7 years ago you ran waste and soil or just soil, I suspect it was just waste. was it 40mm or 50mm since a blockage is less likely with the larger size. also if you apply a monthly dose of waste and drain cleaner down the appliances connected to the waste pipe, you are...

Or change the existing room stat to a wireless one then you can put it in whichever room you are in.

You need a minimum six inch fall with no sag and over that distance it would be best to upgrade to the next size waste up from 40mm. or use a saniflow. But the 4" soil pipe plus six inch fall equals 10" which you won't have.