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plasson blue to black fittings are very good and you dont need any inserts on the black pipework. sold at Travis Perkins and other good merchants.

we talking the internal end of the run? expanding foam is used on alot of newbuild sites, or some sand and cement ontop of insulation.

you could report it to your local water board, they may send a letter to all your neighbours telling them they must fix the issue.They are only normally concerned and take action on 2 things, contamination and waste of water. thats assuming its not a condense pipe off a modern boiler?

on a service what needs doing depends on the boiler, most modern dont need the heat cell to be cracked open and cleaned out every year but if its an older boiler then it should be cleaned especially if it has a cast iron hex. The manufacturers instructions should be followed, simple.

if its build cert approved then its meets a set standard and has chemicals in that will work. you can get x100 for around 11-12 squid so i tend to use this normally, for cheaper jobs i can get plumbs own build cert approved for 3 squid a bottle.

agree with others, tap washer/ internals expanding or worn

i agree, go with unvented hot water.

No but good practice maybe.

Should work fine.

Brick acid will attack the copper and turn it green/ black

Contact the niceic they warranty there members work and may be interested in taking a look.

Turn your boiler off one night to see what happens. I don't think it's going to be boiler related tho.

A scraper of some kind would do, some sand paper or wire wool to buff up before adding paint

i use the plasson black to blue connector.

just run it with the gas turned off to stop it firing up. best to fit a pressure guage and filling loop in a cupboard in living area as the juniors system pressure needs to be kept an eye on when at the top of a system as they can dry fire and damage/ripple the hex.

A couple of thumb vents won't hurt but I'd consider converting to a sealed system.

Worcester will cover the warranty without a problem as long as the gas supply is safe if a little undersized. Get a local GSR to service it.

Looks like 10mm plastic with a reducer into the service valve.

hi, I want to install a wired alarm to my mothers house to give her some peace of mind after my dad passed away and she feels less secure on her own. She has a external garage and shed that she wants covered so im looking for a simple wired alarm that can have some wirless zones/ sensors. Any...

18bar for polypipe stuff, 10-12 for most others. best to test at around 3 bar/working pressure for 10 mins before pumping up to full pressure as somebody else mentioned alittle dust or debris between an oring and pipe can hold at higher pressures sometimes but leak at working pressures. Thats...